v0.4.61: asset cache fix, PNG-enabled iPXE, composed PXE logo

Two real issues v0.4.6 left on the table:

Asset caching:
- index.html now interpolates the running OpenPXE version into every
  asset URL as `?v=<version>` (app.css, app.js, logo.svg). Combined
  with `Cache-Control: no-cache, must-revalidate` on the asset
  handlers, browsers and intermediary proxies are forced to fetch
  fresh on every upgrade. Without this, last release's bundled JS
  kept serving the old UI even after the operator pulled the new
  image — invisible to anyone who only checks the version chip in
  the footer (which is dynamic).
- The Cache-Control header is also applied to logo.svg and loader.svg
  so a logo upload reflects immediately rather than after a hard
  refresh.

Real-image PXE menu logo (matches iVentoy now):
- New Dockerfile stage `ipxe-build` clones the iPXE source and
  compiles all four binaries (undionly.kpxe, snponly.efi for
  x86_64/i386, snponly.efi for arm64 via gcc-aarch64-linux-gnu) with
  IMAGE_PNG + CONSOLE_FRAMEBUFFER + CONSOLE_VESAFB enabled. Replaces
  the boot.ipxe.org fetch — those binaries are built without PNG
  support, which is why v0.4.6's `console --picture` line silently
  no-op'd.
- `iso-store::pxe_logo::compose_pxe_logo` decodes any operator upload
  (PNG / JPEG / WebP / GIF), downscales-to-fit if larger than
  600×200, and pastes it onto a transparent 1024×768 canvas
  centered horizontally with a 64-pixel top margin. iPXE paints the
  result at 1:1 on the typical VESA framebuffer, giving the
  iVentoy-style centered-logo look regardless of the operator's
  source dimensions.
- GET /branding/pxe-logo now returns the composed PNG. wimboot still
  fetches from ipxe/wimboot's GitHub release (separately signed).
- Dropped the ASCII OpenPXE wordmark from render_menu — once the
  real image paints, the banner would duplicate it visually. iPXE
  builds without PNG (none of ours after this release, but a third-
  party undionly might) simply show the menu without a logo, which
  is the right graceful-degradation outcome.

Quality:
- 142 tests passing (was 138 in v0.4.6): +4 pxe_logo unit tests
  covering canvas dimensions, centered-top placement, oversize
  downscale, and unsupported-bytes error handling; existing
  integration tests updated to verify the 1024×768 IHDR header from
  the composed PNG instead of round-tripping the raw upload.
- cargo clippy --workspace --all-targets clean.
- Image dependency: `image = "0.25"` with only `png/jpeg/webp/gif`
  features enabled. No new transitive C deps.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Cargo.lock

@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "adler2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.4"
@@ -84,6 +90,12 @@ version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1505bd5d3d116872e7271a6d4e16d81d0c8570876c8de68093a09ac269d8aac0"
 
+[[package]]
+name = "autocfg"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
+
 [[package]]
 name = "axum"
 version = "0.7.9"
@@ -212,12 +224,24 @@ version = "3.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"
 
+[[package]]
+name = "bytemuck"
+version = "1.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
+[[package]]
+name = "byteorder-lite"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
+
 [[package]]
 name = "bytes"
 version = "1.11.1"
@@ -280,6 +304,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
 
+[[package]]
+name = "color_quant"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
+
 [[package]]
 name = "colorchoice"
 version = "1.0.5"
@@ -295,6 +325,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crc32fast"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9481c1c90cbf2ac953f07c8d4a58aa3945c425b7185c9154d67a65e4230da511"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.1.7"
@@ -406,6 +445,25 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
 
+[[package]]
+name = "fdeflate"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e6853b52649d4ac5c0bd02320cddc5ba956bdb407c4b75a2c6b75bf51500f8c"
+dependencies = [
+ "simd-adler32",
+]
+
+[[package]]
+name = "flate2"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c"
+dependencies = [
+ "crc32fast",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -549,6 +607,16 @@ dependencies = [
  "wasip3",
 ]
 
+[[package]]
+name = "gif"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee8cfcc411d9adbbaba82fb72661cc1bcca13e8bba98b364e62b2dba8f960159"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
 [[package]]
 name = "globset"
 version = "0.4.18"
@@ -821,6 +889,34 @@ dependencies = [
  "icu_properties",
 ]
 
+[[package]]
+name = "image"
+version = "0.25.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85ab80394333c02fe689eaf900ab500fbd0c2213da414687ebf995a65d5a6104"
+dependencies = [
+ "bytemuck",
+ "byteorder-lite",
+ "color_quant",
+ "gif",
+ "image-webp",
+ "moxcms",
+ "num-traits",
+ "png",
+ "zune-core",
+ "zune-jpeg",
+]
+
+[[package]]
+name = "image-webp"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "525e9ff3e1a4be2fbea1fdf0e98686a6d98b4d8f937e1bf7402245af1909e8c3"
+dependencies = [
+ "byteorder-lite",
+ "quick-error",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.14.0"
@@ -958,6 +1054,16 @@ dependencies = [
  "unicase",
 ]
 
+[[package]]
+name = "miniz_oxide"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+dependencies = [
+ "adler2",
+ "simd-adler32",
+]
+
 [[package]]
 name = "mio"
 version = "1.2.0"
@@ -969,6 +1075,16 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "moxcms"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb85c154ba489f01b25c0d36ae69a87e4a1c73a72631fc6c0eb6dde34a73e44b"
+dependencies = [
+ "num-traits",
+ "pxfm",
+]
+
 [[package]]
 name = "multer"
 version = "3.1.0"
@@ -1001,6 +1117,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c6673768db2d862beb9b39a78fdcb1a69439615d5794a1be50caa9bc92c81967"
 
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.4"
@@ -1015,7 +1140,7 @@ checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
 [[package]]
 name = "openpxe"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "anyhow",
  "axum",
@@ -1037,9 +1162,10 @@ dependencies = [
 
 [[package]]
 name = "openpxe-core"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "anyhow",
+ "bcrypt",
  "parking_lot",
  "serde",
  "serde_json",
@@ -1055,7 +1181,7 @@ dependencies = [
 
 [[package]]
 name = "openpxe-dhcp-proxy"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "anyhow",
  "bytes",
@@ -1069,19 +1195,21 @@ dependencies = [
 
 [[package]]
 name = "openpxe-http-api"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "anyhow",
  "axum",
  "bytes",
  "futures",
  "hyper",
+ "image",
  "mime",
  "mime_guess",
  "openpxe-core",
  "openpxe-ipxe-assets",
  "openpxe-iso-store",
  "openpxe-webui",
+ "parking_lot",
  "serde",
  "serde_json",
  "tempfile",
@@ -1098,7 +1226,7 @@ dependencies = [
 
 [[package]]
 name = "openpxe-ipxe-assets"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "openpxe-core",
  "rust-embed",
@@ -1108,12 +1236,13 @@ dependencies = [
 
 [[package]]
 name = "openpxe-iso-store"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "anyhow",
  "bcrypt",
  "bytes",
  "hex",
+ "image",
  "libc",
  "openpxe-core",
  "parking_lot",
@@ -1131,7 +1260,7 @@ dependencies = [
 
 [[package]]
 name = "openpxe-tftp"
-version = "0.4.1"
+version = "0.4.61"
 dependencies = [
  "anyhow",
  "bytes",
@@ -1145,7 +1274,7 @@ dependencies = [
 
 [[package]]
 name = "openpxe-webui"
-version = "0.4.1"
+version = "0.4.61"
 
 [[package]]
 name = "parking_lot"
@@ -1182,6 +1311,19 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
+[[package]]
+name = "png"
+version = "0.18.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
+dependencies = [
+ "bitflags",
+ "crc32fast",
+ "fdeflate",
+ "flate2",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "potential_utf"
 version = "0.1.5"
@@ -1225,6 +1367,18 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "pxfm"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0c5ccf5294c6ccd63a74f1565028353830a9c2f5eb0c682c355c471726a6e3f"
+
+[[package]]
+name = "quick-error"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
+
 [[package]]
 name = "quote"
 version = "1.0.45"
@@ -1482,6 +1636,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "simd-adler32"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "703d5c7ef118737c72f1af64ad2f6f8c5e1921f818cdcb97b8fe6fc69bf66214"
+
 [[package]]
 name = "slab"
 version = "0.4.12"
@@ -2122,6 +2282,12 @@ dependencies = [
  "semver",
 ]
 
+[[package]]
+name = "weezl"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28ac98ddc8b9274cb41bb4d9d4d5c425b6020c50c46f25559911905610b4a88"
+
 [[package]]
 name = "winapi-util"
 version = "0.1.11"
@@ -2436,3 +2602,18 @@ name = "zmij"
 version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+
+[[package]]
+name = "zune-core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb8a0807f7c01457d0379ba880ba6322660448ddebc890ce29bb64da71fb40f9"
+
+[[package]]
+name = "zune-jpeg"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27bc9d5b815bc103f142aa054f561d9187d191692ec7c2d1e2b4737f8dbd7296"
+dependencies = [
+ "zune-core",
+]

Cargo.toml

@@ -12,7 +12,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.4.1"
+version = "0.4.61"
 edition = "2021"
 rust-version = "1.95"
 license = "MIT OR Apache-2.0"

crates/core/Cargo.toml

@@ -21,6 +21,9 @@ time.workspace = true
 uuid.workspace = true
 parking_lot.workspace = true
 tokio = { workspace = true, features = ["sync", "rt", "macros", "time"] }
+# bcrypt for the admin Forms auth (v0.4.5). Already in the workspace
+# for per-ISO boot passwords; just re-exported here.
+bcrypt.workspace = true
 
 [dev-dependencies]
 tempfile = "3.12"

crates/core/src/auth.rs

@@ -0,0 +1,353 @@
+//! Operator authentication — Sonarr/Radarr-style single-admin Forms model.
+//!
+//! On a fresh install, no admin account exists; the WebUI's first-run
+//! flow prompts the operator to create one. After that the chosen
+//! credentials gate `/api/*` access. The admin can rotate username +
+//! password from Settings → Account.
+//!
+//! Multi-user RBAC isn't a goal for OpenPXE — the user explicitly asked
+//! for "you have access or you don't". When SSO is configured, additional
+//! users come in through the IdP; the locally-stored admin is the
+//! fallback owner who can change SSO config or the seal-breaker for an
+//! IdP outage. So one record is enough.
+//!
+//! Storage policy mirrors [`crate::host_bindings::HostBindings`] and
+//! [`crate::boot_log::BootLog`]: in-memory authoritative; disk is the
+//! crash-survival cache; a corrupt `auth.json` falls back to "no admin
+//! configured" rather than blocking startup, which puts the UI back
+//! into setup mode rather than locking the operator out.
+
+use parking_lot::RwLock;
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+use std::sync::Arc;
+use time::OffsetDateTime;
+
+use crate::{Error, Result};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AdminAccount {
+    pub username: String,
+    /// bcrypt hash (cost 10). The plaintext password never leaves the
+    /// request that set it — same discipline as the per-ISO boot password.
+    pub password_hash: String,
+    #[serde(with = "time::serde::rfc3339")]
+    pub created_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub updated_at: OffsetDateTime,
+}
+
+/// Public projection — no hash, safe to ship to the WebUI.
+#[derive(Debug, Clone, Serialize)]
+pub struct AdminPublic {
+    pub username: String,
+    #[serde(with = "time::serde::rfc3339")]
+    pub created_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub updated_at: OffsetDateTime,
+}
+
+impl From<&AdminAccount> for AdminPublic {
+    fn from(a: &AdminAccount) -> Self {
+        Self {
+            username: a.username.clone(),
+            created_at: a.created_at,
+            updated_at: a.updated_at,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+struct Inner {
+    admin: Option<AdminAccount>,
+}
+
+/// In-memory + on-disk admin registry. Cheap to clone.
+#[derive(Debug, Clone)]
+pub struct AdminStore {
+    path: Arc<PathBuf>,
+    inner: Arc<RwLock<Inner>>,
+}
+
+impl AdminStore {
+    /// Load from `<work_dir>/auth.json`, or start empty. A bad file
+    /// logs a warning and falls back to "no admin configured" — better
+    /// to surface the setup flow than lock the operator out of their
+    /// own install.
+    #[must_use]
+    pub fn load_or_default(work_dir: &std::path::Path) -> Self {
+        let path = work_dir.join("auth.json");
+        let inner = match std::fs::read_to_string(&path) {
+            Ok(text) => match serde_json::from_str::<Inner>(&text) {
+                Ok(parsed) => parsed,
+                Err(e) => {
+                    tracing::warn!(
+                        target: "openpxe::auth",
+                        "auth.json present but unreadable ({e}); starting in setup mode"
+                    );
+                    Inner::default()
+                }
+            },
+            Err(_) => Inner::default(),
+        };
+        Self {
+            path: Arc::new(path),
+            inner: Arc::new(RwLock::new(inner)),
+        }
+    }
+
+    /// Has an admin been bootstrapped? Drives the first-run / login
+    /// fork in the HTTP layer.
+    #[must_use]
+    pub fn is_configured(&self) -> bool {
+        self.inner.read().admin.is_some()
+    }
+
+    /// Public-safe snapshot for the WebUI.
+    #[must_use]
+    pub fn snapshot(&self) -> Option<AdminPublic> {
+        self.inner.read().admin.as_ref().map(AdminPublic::from)
+    }
+
+    /// First-run setup: create the admin account. Fails if one already
+    /// exists — the HTTP layer surfaces that as 409.
+    pub fn bootstrap(&self, username: &str, password: &str) -> Result<AdminPublic> {
+        validate_username(username)?;
+        validate_password(password)?;
+        let hash = bcrypt_hash(password)?;
+        let now = OffsetDateTime::now_utc();
+        let admin = AdminAccount {
+            username: username.trim().to_string(),
+            password_hash: hash,
+            created_at: now,
+            updated_at: now,
+        };
+        {
+            let mut g = self.inner.write();
+            if g.admin.is_some() {
+                return Err(Error::Invalid(
+                    "admin account already configured".into(),
+                ));
+            }
+            g.admin = Some(admin.clone());
+        }
+        self.persist();
+        tracing::info!(
+            target: "openpxe::auth",
+            username = %admin.username,
+            "admin account created (first-run setup)"
+        );
+        Ok((&admin).into())
+    }
+
+    /// Verify credentials. Returns the admin record (public projection)
+    /// on success, `Ok(None)` on mismatch, `Err` on systemic bcrypt
+    /// failure (treated as "auth not available right now" by callers).
+    pub fn verify(&self, username: &str, password: &str) -> Result<Option<AdminPublic>> {
+        let Some(admin) = self.inner.read().admin.clone() else {
+            return Ok(None);
+        };
+        if username.trim() != admin.username {
+            return Ok(None);
+        }
+        // bcrypt compares in constant time relative to the same hash.
+        // Doing the username check first is fine — a username mismatch
+        // returns immediately, but the only thing leaked is "this isn't
+        // the admin's username" which the operator already knows.
+        match bcrypt::verify(password, &admin.password_hash) {
+            Ok(true) => Ok(Some((&admin).into())),
+            Ok(false) => Ok(None),
+            Err(e) => Err(Error::Other(e.into())),
+        }
+    }
+
+    /// Rotate username and/or password. `current_password` must match
+    /// the *existing* hash — same flow as Sonarr's "current password
+    /// required to change". `new_username`/`new_password` are optional:
+    /// pass only what you want to change.
+    pub fn update_credentials(
+        &self,
+        current_password: &str,
+        new_username: Option<&str>,
+        new_password: Option<&str>,
+    ) -> Result<AdminPublic> {
+        // Re-check ownership before any state mutation.
+        let existing = self
+            .inner
+            .read()
+            .admin
+            .clone()
+            .ok_or_else(|| Error::Invalid("no admin configured".into()))?;
+        match bcrypt::verify(current_password, &existing.password_hash) {
+            Ok(true) => {}
+            Ok(false) => return Err(Error::Invalid("current password is incorrect".into())),
+            Err(e) => return Err(Error::Other(e.into())),
+        }
+
+        let mut updated = existing.clone();
+        if let Some(u) = new_username {
+            validate_username(u)?;
+            updated.username = u.trim().to_string();
+        }
+        if let Some(p) = new_password {
+            validate_password(p)?;
+            updated.password_hash = bcrypt_hash(p)?;
+        }
+        updated.updated_at = OffsetDateTime::now_utc();
+
+        {
+            let mut g = self.inner.write();
+            g.admin = Some(updated.clone());
+        }
+        self.persist();
+        tracing::info!(
+            target: "openpxe::auth",
+            username = %updated.username,
+            "admin credentials updated"
+        );
+        Ok((&updated).into())
+    }
+
+    fn persist(&self) {
+        let snap = self.inner.read().clone();
+        let body = match serde_json::to_vec_pretty(&snap) {
+            Ok(b) => b,
+            Err(e) => {
+                tracing::warn!(target: "openpxe::auth", "serialize auth.json: {e}");
+                return;
+            }
+        };
+        if let Some(parent) = self.path.parent() {
+            let _ = std::fs::create_dir_all(parent);
+        }
+        let tmp = self.path.with_extension("json.tmp");
+        if let Err(e) = std::fs::write(&tmp, body) {
+            tracing::warn!(target: "openpxe::auth", "write auth.json tmp: {e}");
+            return;
+        }
+        if let Err(e) = std::fs::rename(&tmp, self.path.as_path()) {
+            tracing::warn!(target: "openpxe::auth", "rename auth.json: {e}");
+        }
+    }
+}
+
+fn validate_username(u: &str) -> Result<()> {
+    let u = u.trim();
+    if u.is_empty() {
+        return Err(Error::Invalid("username must not be empty".into()));
+    }
+    if u.len() > 64 {
+        return Err(Error::Invalid("username must be 64 chars or fewer".into()));
+    }
+    if !u.chars().all(|c| c.is_ascii_graphic() && c != ':') {
+        return Err(Error::Invalid(
+            "username must be ASCII printable with no ':' character".into(),
+        ));
+    }
+    Ok(())
+}
+
+fn validate_password(p: &str) -> Result<()> {
+    if p.len() < 8 {
+        return Err(Error::Invalid(
+            "password must be at least 8 characters".into(),
+        ));
+    }
+    if p.len() > 256 {
+        return Err(Error::Invalid(
+            "password must be 256 characters or fewer".into(),
+        ));
+    }
+    Ok(())
+}
+
+fn bcrypt_hash(password: &str) -> Result<String> {
+    bcrypt::hash(password, bcrypt::DEFAULT_COST).map_err(|e| Error::Other(e.into()))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::tempdir;
+
+    #[test]
+    fn empty_after_load_when_no_file() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        assert!(!s.is_configured());
+        assert!(s.snapshot().is_none());
+    }
+
+    #[test]
+    fn bootstrap_then_verify_round_trip() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        let pub_ = s.bootstrap("admin", "hunter2hunter2").unwrap();
+        assert_eq!(pub_.username, "admin");
+        assert!(s.is_configured());
+
+        // Correct creds match; wrong creds don't.
+        assert!(s.verify("admin", "hunter2hunter2").unwrap().is_some());
+        assert!(s.verify("admin", "wrong").unwrap().is_none());
+        assert!(s.verify("nobody", "hunter2hunter2").unwrap().is_none());
+    }
+
+    #[test]
+    fn bootstrap_rejects_second_call() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        s.bootstrap("admin", "hunter2hunter2").unwrap();
+        let r = s.bootstrap("other", "anotherpass1");
+        assert!(matches!(r, Err(Error::Invalid(_))));
+    }
+
+    #[test]
+    fn round_trip_survives_disk_reload() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        s.bootstrap("admin", "hunter2hunter2").unwrap();
+        drop(s);
+        let s2 = AdminStore::load_or_default(dir.path());
+        assert!(s2.is_configured());
+        assert!(s2.verify("admin", "hunter2hunter2").unwrap().is_some());
+    }
+
+    #[test]
+    fn update_credentials_requires_current_password() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        s.bootstrap("admin", "hunter2hunter2").unwrap();
+        // Wrong current password → no change.
+        let r = s.update_credentials("nope", None, Some("newpassword1"));
+        assert!(matches!(r, Err(Error::Invalid(_))));
+        assert!(s.verify("admin", "hunter2hunter2").unwrap().is_some());
+
+        // Correct current password rotates only what's supplied.
+        s.update_credentials("hunter2hunter2", Some("alice"), Some("newpassword1"))
+            .unwrap();
+        assert!(s.verify("admin", "hunter2hunter2").unwrap().is_none());
+        assert!(s.verify("alice", "newpassword1").unwrap().is_some());
+    }
+
+    #[test]
+    fn update_credentials_partial_password_only_keeps_username() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        s.bootstrap("admin", "hunter2hunter2").unwrap();
+        s.update_credentials("hunter2hunter2", None, Some("newpassword1"))
+            .unwrap();
+        assert!(s.verify("admin", "newpassword1").unwrap().is_some());
+    }
+
+    #[test]
+    fn validates_username_and_password() {
+        let dir = tempdir().unwrap();
+        let s = AdminStore::load_or_default(dir.path());
+        assert!(s.bootstrap("", "hunter2hunter2").is_err());
+        assert!(s.bootstrap("ad:min", "hunter2hunter2").is_err()); // ':' reserved
+        assert!(s.bootstrap("admin", "short").is_err()); // <8 chars
+        // 65-char username is too long.
+        let long = "a".repeat(65);
+        assert!(s.bootstrap(&long, "hunter2hunter2").is_err());
+    }
+}

crates/core/src/branding.rs

@@ -0,0 +1,339 @@
+//! Operator-controlled branding overrides.
+//!
+//! The browser tab's logo (`/assets/logo.svg`) defaults to the bundled
+//! rainbow-horizon mark. Operators who deploy OpenPXE behind their own
+//! branding can upload a replacement that lives at
+//! `<work_dir>/branding/logo.<ext>` and is served in preference to the
+//! bundled SVG when present. Borrowed-from-FleetDM: tenant chrome, same
+//! product.
+//!
+//! Storage policy mirrors `HostBindings` / `BootLog`: in-memory cache is
+//! authoritative for the current process, disk is the source of truth on
+//! restart, and a corrupt cache file falls back to the bundled default
+//! rather than blocking startup.
+
+use parking_lot::RwLock;
+use serde::{Deserialize, Serialize};
+use std::path::{Path, PathBuf};
+use std::sync::Arc;
+
+/// Allowed MIME types for an uploaded logo. We deliberately keep this
+/// narrow — anything that can be `<img src="...">`'d into the brand
+/// block, no scripts. SVG carries the obvious XSS risk for raw inline
+/// HTML; we always serve the bytes as a separate asset with a strict
+/// content-type rather than inlining, so SVG is safe.
+pub const ALLOWED_LOGO_MIMES: &[&str] = &[
+    "image/svg+xml",
+    "image/png",
+    "image/jpeg",
+    "image/webp",
+    "image/gif",
+];
+
+/// Disk cap for an uploaded logo. PXE WebUIs are operator-facing — even
+/// a generous 2 MB cap is comfortable for any reasonable brand mark and
+/// puts a clear bound on memory + serialization cost.
+pub const MAX_LOGO_BYTES: usize = 2 * 1024 * 1024;
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+struct Inner {
+    /// File name (relative to the branding dir) for the active logo, if
+    /// any. Always under `<work_dir>/branding/`; never an absolute path
+    /// from the operator.
+    logo_filename: Option<String>,
+    /// MIME of the active logo, mirroring `logo_filename`. Cached here
+    /// so the HTTP layer can set Content-Type without re-sniffing.
+    logo_mime: Option<String>,
+}
+
+/// In-memory + on-disk override registry. Cheap to clone; locks are
+/// brief. The `branding.json` cache lives alongside the active asset
+/// inside `<work_dir>/branding/`.
+#[derive(Debug, Clone)]
+pub struct BrandingStore {
+    /// Root directory: `<work_dir>/branding/`. Created on first write.
+    dir: Arc<PathBuf>,
+    inner: Arc<RwLock<Inner>>,
+}
+
+impl BrandingStore {
+    /// Load (or initialise empty) from `<work_dir>/branding/`. Tolerates
+    /// missing directories, partial state, and corrupt JSON — a bad
+    /// cache should never block PXE for the network.
+    #[must_use]
+    pub fn load_or_default(work_dir: &Path) -> Self {
+        let dir = work_dir.join("branding");
+        let path = dir.join("branding.json");
+        let mut inner = Inner::default();
+        if let Ok(text) = std::fs::read_to_string(&path) {
+            match serde_json::from_str::<Inner>(&text) {
+                Ok(parsed) => {
+                    // Sanity: if the JSON says we have a logo but the
+                    // file is gone, clear the in-memory pointer so
+                    // /assets/logo.svg falls back to the bundled SVG
+                    // rather than 500ing on a missing file.
+                    if let Some(name) = parsed.logo_filename.as_deref() {
+                        if dir.join(name).is_file() {
+                            inner = parsed;
+                        } else {
+                            tracing::warn!(
+                                target: "openpxe::branding",
+                                file = %name,
+                                "branding.json points at missing file; clearing"
+                            );
+                        }
+                    } else {
+                        inner = parsed;
+                    }
+                }
+                Err(e) => {
+                    tracing::warn!(
+                        target: "openpxe::branding",
+                        "branding.json present but unreadable ({e}); starting empty"
+                    );
+                }
+            }
+        }
+        Self {
+            dir: Arc::new(dir),
+            inner: Arc::new(RwLock::new(inner)),
+        }
+    }
+
+    /// Absolute path to the active logo, if one is set and present on
+    /// disk. `None` means the HTTP layer should serve the bundled SVG.
+    #[must_use]
+    pub fn logo_path(&self) -> Option<PathBuf> {
+        let g = self.inner.read();
+        g.logo_filename.as_deref().map(|n| self.dir.join(n))
+    }
+
+    /// MIME of the active logo, if any. The HTTP layer pairs this with
+    /// the bytes returned by [`Self::logo_path`].
+    #[must_use]
+    pub fn logo_mime(&self) -> Option<String> {
+        self.inner.read().logo_mime.clone()
+    }
+
+    /// Replace the active logo. Returns the chosen on-disk filename so
+    /// the caller can echo it back in the API response. Old logos are
+    /// removed best-effort.
+    pub fn set_logo(&self, mime: &str, ext: &str, bytes: &[u8]) -> std::io::Result<String> {
+        std::fs::create_dir_all(self.dir.as_path())?;
+        // Single canonical filename per upload — overwriting the old one
+        // (after clearing it) keeps the directory tidy and avoids any
+        // path-traversal concern: the operator never supplies the name.
+        let safe_ext = sanitize_ext(ext);
+        let filename = format!("logo.{safe_ext}");
+        let final_path = self.dir.join(&filename);
+        // Atomic write: tmp -> rename. Guarantees the file is either
+        // entirely the old logo or entirely the new one.
+        let tmp = final_path.with_extension(format!("{safe_ext}.tmp"));
+        std::fs::write(&tmp, bytes)?;
+        std::fs::rename(&tmp, &final_path)?;
+        // Clean up any sibling logo.<otherext> so there's exactly one
+        // canonical file at any time.
+        if let Ok(entries) = std::fs::read_dir(self.dir.as_path()) {
+            for e in entries.flatten() {
+                let p = e.path();
+                let name = p
+                    .file_name()
+                    .and_then(|s| s.to_str())
+                    .unwrap_or("");
+                if name.starts_with("logo.") && name != filename {
+                    let _ = std::fs::remove_file(&p);
+                }
+            }
+        }
+
+        {
+            let mut g = self.inner.write();
+            g.logo_filename = Some(filename.clone());
+            g.logo_mime = Some(mime.to_string());
+        }
+        self.persist();
+        tracing::info!(
+            target: "openpxe::branding",
+            file = %filename, mime = %mime, size = bytes.len(),
+            "custom logo installed"
+        );
+        Ok(filename)
+    }
+
+    /// Drop the override and return to the bundled SVG.
+    pub fn clear_logo(&self) -> std::io::Result<()> {
+        let removed = {
+            let mut g = self.inner.write();
+            let removed = g.logo_filename.take();
+            g.logo_mime = None;
+            removed
+        };
+        if let Some(name) = removed {
+            let p = self.dir.join(&name);
+            let _ = std::fs::remove_file(&p);
+            tracing::info!(target: "openpxe::branding", file = %name, "custom logo cleared");
+        }
+        self.persist();
+        Ok(())
+    }
+
+    /// Convenience: true if a custom logo is configured. Surfaces on
+    /// `/api/status` so the WebUI can show "Custom logo: yes" without
+    /// fetching the asset itself.
+    #[must_use]
+    pub fn has_logo(&self) -> bool {
+        self.inner.read().logo_filename.is_some()
+    }
+
+    fn persist(&self) {
+        let snap = self.inner.read().clone();
+        let body = match serde_json::to_vec_pretty(&snap) {
+            Ok(b) => b,
+            Err(e) => {
+                tracing::warn!(target: "openpxe::branding", "serialize branding.json: {e}");
+                return;
+            }
+        };
+        if let Err(e) = std::fs::create_dir_all(self.dir.as_path()) {
+            tracing::warn!(target: "openpxe::branding", "mkdir branding/: {e}");
+            return;
+        }
+        let path = self.dir.join("branding.json");
+        let tmp = path.with_extension("json.tmp");
+        if let Err(e) = std::fs::write(&tmp, body) {
+            tracing::warn!(target: "openpxe::branding", "write branding.json tmp: {e}");
+            return;
+        }
+        if let Err(e) = std::fs::rename(&tmp, &path) {
+            tracing::warn!(target: "openpxe::branding", "rename branding.json: {e}");
+        }
+    }
+}
+
+/// Trim arbitrary operator-supplied extension strings to a small, safe
+/// alphanumeric form. Anything weird collapses to `bin`. We never let
+/// the extension affect the path beyond the final segment of `logo.<x>`.
+fn sanitize_ext(ext: &str) -> String {
+    let lc: String = ext
+        .chars()
+        .filter(char::is_ascii_alphanumeric)
+        .map(|c| c.to_ascii_lowercase())
+        .collect();
+    if lc.is_empty() || lc.len() > 5 {
+        "bin".into()
+    } else {
+        lc
+    }
+}
+
+/// Pick a safe filesystem extension from a MIME type. Returns `None`
+/// if the MIME isn't on the [`ALLOWED_LOGO_MIMES`] allowlist.
+#[must_use]
+pub fn ext_for_mime(mime: &str) -> Option<&'static str> {
+    match mime {
+        "image/svg+xml" => Some("svg"),
+        "image/png" => Some("png"),
+        "image/jpeg" => Some("jpg"),
+        "image/webp" => Some("webp"),
+        "image/gif" => Some("gif"),
+        _ => None,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::tempdir;
+
+    #[test]
+    fn empty_after_load_when_no_branding_dir() {
+        let dir = tempdir().unwrap();
+        let b = BrandingStore::load_or_default(dir.path());
+        assert!(!b.has_logo());
+        assert!(b.logo_path().is_none());
+        assert!(b.logo_mime().is_none());
+    }
+
+    #[test]
+    fn set_clear_round_trip_persists() {
+        let dir = tempdir().unwrap();
+        let b = BrandingStore::load_or_default(dir.path());
+        let name = b.set_logo("image/png", "png", b"\x89PNG\r\n\x1a\nfake").unwrap();
+        assert_eq!(name, "logo.png");
+        assert!(b.has_logo());
+        assert_eq!(b.logo_mime().as_deref(), Some("image/png"));
+        let p = b.logo_path().unwrap();
+        assert!(p.is_file());
+
+        // Re-open and confirm the override survives a restart.
+        drop(b);
+        let b2 = BrandingStore::load_or_default(dir.path());
+        assert!(b2.has_logo());
+        assert_eq!(b2.logo_mime().as_deref(), Some("image/png"));
+
+        // Clear; the file goes away and has_logo flips off.
+        b2.clear_logo().unwrap();
+        assert!(!b2.has_logo());
+        assert!(!p.exists());
+    }
+
+    #[test]
+    fn replacing_logo_removes_old_extension_sibling() {
+        // PNG then SVG; only the SVG should remain on disk.
+        let dir = tempdir().unwrap();
+        let b = BrandingStore::load_or_default(dir.path());
+        b.set_logo("image/png", "png", b"\x89PNG\r\n\x1a\nfake").unwrap();
+        b.set_logo("image/svg+xml", "svg", br#"<svg xmlns="http://www.w3.org/2000/svg"/>"#).unwrap();
+        let entries: Vec<_> = std::fs::read_dir(dir.path().join("branding"))
+            .unwrap()
+            .filter_map(|e| e.ok().map(|e| e.file_name().to_string_lossy().into_owned()))
+            .collect();
+        assert!(entries.iter().any(|n| n == "logo.svg"), "got {entries:?}");
+        assert!(!entries.iter().any(|n| n == "logo.png"), "stale PNG left over: {entries:?}");
+    }
+
+    #[test]
+    fn sanitize_ext_strips_separators_and_path_chars() {
+        assert_eq!(sanitize_ext("svg"), "svg");
+        // Path separators and non-alphanumerics filter out, leaving just
+        // letters. The remaining "etcpasswd" exceeds the 5-char cap so
+        // it collapses to `bin` rather than producing `etcpa`.
+        assert_eq!(sanitize_ext("../etc/passwd"), "bin");
+        // Short alphanumeric strip-through stays itself.
+        assert_eq!(sanitize_ext("../svg"), "svg");
+        assert_eq!(sanitize_ext(""), "bin");
+        assert_eq!(sanitize_ext("PNG"), "png");
+        // Anything past five chars is suspicious — collapse to `bin`.
+        assert_eq!(sanitize_ext("svgvvvv"), "bin");
+    }
+
+    #[test]
+    fn missing_file_referenced_by_json_resolves_to_empty() {
+        // If the operator nukes the file out from under the JSON cache,
+        // we should silently fall back to no-override rather than
+        // hanging on to a bogus path.
+        let dir = tempdir().unwrap();
+        let brand_dir = dir.path().join("branding");
+        std::fs::create_dir_all(&brand_dir).unwrap();
+        // Hand-write a branding.json claiming logo.png exists.
+        let inner = Inner {
+            logo_filename: Some("logo.png".into()),
+            logo_mime: Some("image/png".into()),
+        };
+        std::fs::write(
+            brand_dir.join("branding.json"),
+            serde_json::to_vec_pretty(&inner).unwrap(),
+        )
+        .unwrap();
+        let b = BrandingStore::load_or_default(dir.path());
+        assert!(!b.has_logo(), "should fall back when referenced file is missing");
+    }
+
+    #[test]
+    fn ext_for_mime_only_accepts_known_types() {
+        assert_eq!(ext_for_mime("image/png"), Some("png"));
+        assert_eq!(ext_for_mime("image/svg+xml"), Some("svg"));
+        assert_eq!(ext_for_mime("application/octet-stream"), None);
+        assert_eq!(ext_for_mime("text/html"), None);
+    }
+}

crates/core/src/lib.rs

@@ -3,7 +3,9 @@
 #![forbid(unsafe_code)]
 
 pub mod arch;
+pub mod auth;
 pub mod boot_log;
+pub mod branding;
 pub mod client;
 pub mod config;
 pub mod error;
@@ -12,10 +14,14 @@ pub mod log_bus;
 pub mod metrics;
 pub mod queue;
 pub mod settings;
+pub mod sso;
 
 pub use arch::{ClientArch, FirmwareClass};
+pub use auth::{AdminAccount, AdminPublic, AdminStore};
 pub use boot_log::{BootEvent, BootLog};
+pub use branding::{ext_for_mime, BrandingStore, ALLOWED_LOGO_MIMES, MAX_LOGO_BYTES};
 pub use client::{ClientEvent, ClientRegistry, ClientSnapshot};
+pub use sso::{SsoConfig, SsoStore};
 pub use config::{Config, DhcpMode, NetworkConfig, Paths, ServerConfig};
 pub use error::{Error, Result};
 pub use host_bindings::{normalize_mac, HostBinding, HostBindings};

crates/core/src/sso.rs

@@ -0,0 +1,318 @@
+//! SAML SSO configuration — FleetDM-shaped, storage-only for v0.4.5.
+//!
+//! The operator pastes their IdP's metadata XML (or its URL) and a
+//! human-readable label; v0.4.5 just persists it. The actual SAML
+//! response-validation / JIT-provisioning flow lands in a later release
+//! — for now we cover the "configurable" half so an operator can teach
+//! OpenPXE about their IdP today and flip the switch on next upgrade.
+//!
+//! Shape borrowed from <https://github.com/fleetdm/fleet>'s app-config
+//! SSO block, minus the user-RBAC fields (OpenPXE is single-tier: you
+//! have access or you don't). Entity ID is omitted from the operator
+//! UI per the v0.4.5 brief — it defaults to the advertised public base
+//! URL when SAML wiring lands, which is what most IdPs expect anyway.
+
+use parking_lot::RwLock;
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+use std::sync::Arc;
+
+use crate::{Error, Result};
+
+/// The configurable surface. `metadata` and `metadata_url` are mutually
+/// exclusive at apply time (one or the other identifies the IdP); the
+/// store keeps both fields so an operator can switch between them
+/// without losing the inactive one.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+pub struct SsoConfig {
+    /// Master switch — when false, all SSO machinery (planned for a
+    /// later release) is skipped regardless of the rest of the fields.
+    #[serde(default)]
+    pub enabled: bool,
+    /// Display name shown on the WebUI's login screen as the "Sign in
+    /// with X" button label. Empty/whitespace falls back to "SSO".
+    #[serde(default)]
+    pub idp_name: String,
+    /// Optional HTTPS URL pointing at the IdP's brand logo. Rendered
+    /// next to `idp_name` on the WebUI's login screen (FleetDM-style).
+    /// Length-capped at [`MAX_URL_LEN`]; empty is fine.
+    #[serde(default)]
+    pub idp_logo_url: String,
+    /// Raw SAML metadata XML pasted by the operator. Mutually exclusive
+    /// with `metadata_url`; if both are set, the URL wins at apply time
+    /// (operators typically forget about a stale XML paste).
+    #[serde(default)]
+    pub metadata: String,
+    /// HTTPS URL where the IdP serves its metadata. Loaded lazily by the
+    /// future SAML flow; not validated here beyond a basic length cap.
+    #[serde(default)]
+    pub metadata_url: String,
+}
+
+impl SsoConfig {
+    /// Returns `true` only when the config is *usable* — enabled, and
+    /// at least one of metadata/metadata_url is present. The future
+    /// login flow will key off this; for v0.4.5 the WebUI uses it to
+    /// surface a yellow "configured but not live yet" hint.
+    #[must_use]
+    pub fn is_usable(&self) -> bool {
+        self.enabled
+            && (!self.metadata.trim().is_empty() || !self.metadata_url.trim().is_empty())
+    }
+}
+
+/// In-memory + on-disk SSO settings registry.
+#[derive(Debug, Clone)]
+pub struct SsoStore {
+    path: Arc<PathBuf>,
+    inner: Arc<RwLock<SsoConfig>>,
+}
+
+impl SsoStore {
+    /// Load from `<work_dir>/sso.json`, or start with the default empty
+    /// (`enabled = false`) config. A corrupt file falls back to default
+    /// rather than blocking startup.
+    #[must_use]
+    pub fn load_or_default(work_dir: &std::path::Path) -> Self {
+        let path = work_dir.join("sso.json");
+        let cfg = match std::fs::read_to_string(&path) {
+            Ok(text) => match serde_json::from_str::<SsoConfig>(&text) {
+                Ok(parsed) => parsed,
+                Err(e) => {
+                    tracing::warn!(
+                        target: "openpxe::sso",
+                        "sso.json present but unreadable ({e}); starting with default config"
+                    );
+                    SsoConfig::default()
+                }
+            },
+            Err(_) => SsoConfig::default(),
+        };
+        Self {
+            path: Arc::new(path),
+            inner: Arc::new(RwLock::new(cfg)),
+        }
+    }
+
+    #[must_use]
+    pub fn snapshot(&self) -> SsoConfig {
+        self.inner.read().clone()
+    }
+
+    /// Replace the whole config in one shot. Light validation: metadata
+    /// XML and URL are length-capped so an operator can't OOM us by
+    /// pasting a 10 GiB blob; the IdP UI tab clamps the input visually,
+    /// but the server enforces a hard ceiling regardless.
+    pub fn replace(&self, mut cfg: SsoConfig) -> Result<SsoConfig> {
+        cfg.idp_name = cfg.idp_name.trim().to_string();
+        cfg.idp_logo_url = cfg.idp_logo_url.trim().to_string();
+        cfg.metadata = cfg.metadata.trim().to_string();
+        cfg.metadata_url = cfg.metadata_url.trim().to_string();
+        if cfg.metadata.len() > MAX_METADATA_BYTES {
+            return Err(Error::Invalid(format!(
+                "metadata XML exceeds {MAX_METADATA_BYTES}-byte cap"
+            )));
+        }
+        if cfg.metadata_url.len() > MAX_URL_LEN {
+            return Err(Error::Invalid(format!(
+                "metadata_url exceeds {MAX_URL_LEN}-char cap"
+            )));
+        }
+        if cfg.idp_logo_url.len() > MAX_URL_LEN {
+            return Err(Error::Invalid(format!(
+                "idp_logo_url exceeds {MAX_URL_LEN}-char cap"
+            )));
+        }
+        if !cfg.metadata_url.is_empty()
+            && !cfg.metadata_url.starts_with("http://")
+            && !cfg.metadata_url.starts_with("https://")
+        {
+            return Err(Error::Invalid(
+                "metadata_url must start with http:// or https://".into(),
+            ));
+        }
+        if !cfg.idp_logo_url.is_empty()
+            && !cfg.idp_logo_url.starts_with("http://")
+            && !cfg.idp_logo_url.starts_with("https://")
+        {
+            return Err(Error::Invalid(
+                "idp_logo_url must start with http:// or https://".into(),
+            ));
+        }
+        // If they're trying to *enable* the integration but haven't
+        // supplied either source, reject — saves a "configured but
+        // unusable" surprise later.
+        if cfg.enabled && cfg.metadata.is_empty() && cfg.metadata_url.is_empty() {
+            return Err(Error::Invalid(
+                "enable SSO requires either metadata XML or a metadata URL".into(),
+            ));
+        }
+        {
+            let mut g = self.inner.write();
+            *g = cfg.clone();
+        }
+        self.persist();
+        tracing::info!(
+            target: "openpxe::sso",
+            enabled = cfg.enabled,
+            idp = %cfg.idp_name,
+            has_xml = !cfg.metadata.is_empty(),
+            has_url = !cfg.metadata_url.is_empty(),
+            "sso configuration updated"
+        );
+        Ok(cfg)
+    }
+
+    fn persist(&self) {
+        let snap = self.inner.read().clone();
+        let body = match serde_json::to_vec_pretty(&snap) {
+            Ok(b) => b,
+            Err(e) => {
+                tracing::warn!(target: "openpxe::sso", "serialize sso.json: {e}");
+                return;
+            }
+        };
+        if let Some(parent) = self.path.parent() {
+            let _ = std::fs::create_dir_all(parent);
+        }
+        let tmp = self.path.with_extension("json.tmp");
+        if let Err(e) = std::fs::write(&tmp, body) {
+            tracing::warn!(target: "openpxe::sso", "write sso.json tmp: {e}");
+            return;
+        }
+        if let Err(e) = std::fs::rename(&tmp, self.path.as_path()) {
+            tracing::warn!(target: "openpxe::sso", "rename sso.json: {e}");
+        }
+    }
+}
+
+/// Saturation caps. The numbers are generous for any real IdP metadata
+/// document — Okta's largest is ~50 KB, Azure AD's ~30 KB.
+const MAX_METADATA_BYTES: usize = 1024 * 1024;
+const MAX_URL_LEN: usize = 2048;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::tempdir;
+
+    #[test]
+    fn default_is_disabled_and_empty() {
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        let cfg = s.snapshot();
+        assert!(!cfg.enabled);
+        assert!(cfg.metadata.is_empty());
+        assert!(cfg.metadata_url.is_empty());
+        assert!(!cfg.is_usable());
+    }
+
+    #[test]
+    fn replace_metadata_url_round_trip_via_disk() {
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        s.replace(SsoConfig {
+            enabled: true,
+            idp_name: "Okta".into(),
+            metadata: String::new(),
+            metadata_url: "https://idp.example.com/metadata".into(),
+            idp_logo_url: String::new(),
+        })
+        .unwrap();
+        drop(s);
+        let s2 = SsoStore::load_or_default(dir.path());
+        let cfg = s2.snapshot();
+        assert!(cfg.enabled);
+        assert!(cfg.is_usable());
+        assert_eq!(cfg.idp_name, "Okta");
+        assert_eq!(cfg.metadata_url, "https://idp.example.com/metadata");
+    }
+
+    #[test]
+    fn replace_xml_paste_is_accepted() {
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        let xml = r#"<EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata">test</EntityDescriptor>"#;
+        s.replace(SsoConfig {
+            enabled: true,
+            idp_name: "Test IdP".into(),
+            metadata: xml.into(),
+            metadata_url: String::new(),
+            idp_logo_url: String::new(),
+        })
+        .unwrap();
+        assert!(s.snapshot().is_usable());
+    }
+
+    #[test]
+    fn enable_without_source_is_rejected() {
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        let r = s.replace(SsoConfig {
+            enabled: true,
+            idp_name: "Okta".into(),
+            metadata: String::new(),
+            metadata_url: String::new(),
+            idp_logo_url: String::new(),
+        });
+        assert!(matches!(r, Err(Error::Invalid(_))));
+        // …and a disabled blank config is fine.
+        s.replace(SsoConfig::default()).unwrap();
+    }
+
+    #[test]
+    fn metadata_url_must_be_http_scheme() {
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        let r = s.replace(SsoConfig {
+            enabled: false,
+            idp_name: String::new(),
+            metadata: String::new(),
+            metadata_url: "ftp://idp.example.com/metadata".into(),
+            idp_logo_url: String::new(),
+        });
+        assert!(matches!(r, Err(Error::Invalid(_))));
+    }
+
+    #[test]
+    fn idp_logo_url_must_be_http_scheme() {
+        // v0.4.6: SSO settings learned an idp_logo_url so the login
+        // screen can render the FleetDM-style "Sign in with <IdP-logo>"
+        // affordance. Same scheme rule as metadata_url.
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        let r = s.replace(SsoConfig {
+            enabled: false,
+            idp_name: "Okta".into(),
+            metadata: String::new(),
+            metadata_url: String::new(),
+            idp_logo_url: "data:image/png;base64,...".into(),
+        });
+        assert!(matches!(r, Err(Error::Invalid(_))));
+        // Real HTTPS URL is fine.
+        s.replace(SsoConfig {
+            enabled: false,
+            idp_name: "Okta".into(),
+            metadata: String::new(),
+            metadata_url: String::new(),
+            idp_logo_url: "https://idp.example.com/logo.png".into(),
+        })
+        .unwrap();
+        assert_eq!(s.snapshot().idp_logo_url, "https://idp.example.com/logo.png");
+    }
+
+    #[test]
+    fn metadata_size_cap_enforced() {
+        let dir = tempdir().unwrap();
+        let s = SsoStore::load_or_default(dir.path());
+        let oversize = "a".repeat(MAX_METADATA_BYTES + 1);
+        let r = s.replace(SsoConfig {
+            enabled: false,
+            idp_name: String::new(),
+            metadata: oversize,
+            metadata_url: String::new(),
+            idp_logo_url: String::new(),
+        });
+        assert!(matches!(r, Err(Error::Invalid(_))));
+    }
+}

crates/http-api/Cargo.toml

@@ -32,6 +32,8 @@ futures.workspace = true
 mime.workspace = true
 mime_guess.workspace = true
 uuid.workspace = true
+# v0.4.5 Forms auth: lock-free session store and cookie helpers.
+parking_lot.workspace = true
 
 [dev-dependencies]
 tokio = { workspace = true, features = ["macros", "rt", "rt-multi-thread", "time"] }
@@ -39,3 +41,6 @@ tower = { workspace = true }
 tempfile = "3.12"
 serde_json = { workspace = true }
 time = { workspace = true }
+# v0.4.61: integration tests need to generate real PNG bytes for the
+# `/branding/pxe-logo` compositor; hand-rolled CRCs are too fragile.
+image = { version = "0.25", default-features = false, features = ["png"] }

crates/http-api/src/app.rs

@@ -13,6 +13,7 @@
 //! | `/iso/<id>/*`    | Files inside the ISO (for wimboot & kernel/initrd)    |
 //! | `/api/*`         | JSON/HTML API for the web UI                          |
 
+use crate::auth as auth_api;
 use crate::ipxe_script::{
     render_entry, render_family_menu, render_local_hdd, render_menu, render_nic_info,
     render_queue_entry, render_shell, render_tools_menu, render_util,
@@ -29,9 +30,12 @@ use axum::{
     routing::{delete, get, post, put},
     Json, Router,
 };
-use openpxe_core::{BootEvent, ClientEvent, Error, Settings};
+use openpxe_core::{
+    ext_for_mime, BootEvent, ClientEvent, Error, Settings, SsoConfig, ALLOWED_LOGO_MIMES,
+    MAX_LOGO_BYTES,
+};
 use openpxe_ipxe_assets::asset_bytes;
-use openpxe_iso_store::{IsoMeta, NfsAddRequest};
+use openpxe_iso_store::{IsoCategory, IsoMeta, NfsAddRequest};
 use serde::Deserialize;
 use serde_json::json;
 use std::net::SocketAddr;
@@ -47,6 +51,13 @@ pub fn build_router(state: AppState) -> Router {
         .route("/assets/app.css", get(ui_css))
         .route("/assets/logo.svg", get(ui_logo))
         .route("/assets/loader.svg", get(ui_loader))
+        // v0.4.6: PXE menu logo — the raster form of the operator's
+        // uploaded mark, served so iPXE's `console --picture` can
+        // overlay it on the boot menu. SVG uploads 404 here (iPXE
+        // can't rasterize SVG); we deliberately don't bundle a
+        // pre-rendered PNG fallback because iPXE's ASCII wordmark
+        // banner already provides the always-visible branding.
+        .route("/branding/pxe-logo", get(ui_pxe_logo))
         // iPXE script endpoints.
         .route("/boot.ipxe", get(boot_top_menu))
         .route("/boot/:filename", get(boot_sub))
@@ -73,6 +84,46 @@ pub fn build_router(state: AppState) -> Router {
             "/api/isos/:id/password",
             axum::routing::put(api_set_iso_password).delete(api_clear_iso_password),
         )
+        // v0.4.4: per-ISO menu category (Os / Tools). Drives whether the
+        // image appears under Linux/Windows Installers (default) or in
+        // the Tools submenu next to memtest / shell / NIC info.
+        .route(
+            "/api/isos/:id/category",
+            axum::routing::put(api_set_iso_category),
+        )
+        // v0.4.4: filesystem free-space telemetry for the ISO directory's
+        // volume — surfaced as a small card on the Storage tab so the
+        // operator knows when they're about to run out of room.
+        .route("/api/storage/disk", get(api_storage_disk))
+        // v0.4.4: operator-controlled WebUI branding overrides
+        // (custom logo). Multipart upload to POST; DELETE clears.
+        .route(
+            "/api/branding/logo",
+            post(api_branding_upload).delete(api_branding_clear),
+        )
+        // v0.4.4: self-rendered API reference, served as JSON so the UI
+        // can format it consistently with the rest of the chrome. Lives
+        // under the Settings tab — operators chasing an integration get
+        // it in-product instead of having to fetch the OpenAPI YAML.
+        .route("/api/docs", get(api_docs))
+        // v0.4.5: Sonarr/Radarr-style admin Forms auth. First-run
+        // /setup creates the single admin account; /login validates;
+        // /logout revokes the session; /me powers the front-end's
+        // "should I show the setup page, the login page, or the
+        // dashboard?" decision. /me/credentials rotates the admin's
+        // username/password.
+        .route("/api/setup", post(auth_api::api_setup))
+        .route("/api/login", post(auth_api::api_login))
+        .route("/api/logout", post(auth_api::api_logout))
+        .route("/api/me", get(auth_api::api_me))
+        .route(
+            "/api/me/credentials",
+            put(auth_api::api_update_credentials),
+        )
+        // v0.4.5: SAML SSO configuration (FleetDM-shaped, storage-only).
+        // The actual sign-in flow lands in a later release; this just
+        // gives operators a place to paste their IdP metadata today.
+        .route("/api/sso", get(api_sso_get).put(api_sso_put))
         .route("/api/clients", get(api_list_clients))
         .route("/api/status", get(api_status))
         .route("/api/settings", get(api_get_settings).put(api_put_settings))
@@ -104,32 +155,85 @@ pub fn build_router(state: AppState) -> Router {
         // format. No auth — the metrics surface is intentionally
         // boring (counts, no payloads).
         .route("/metrics", get(api_metrics))
+        // v0.4.5: Forms-auth middleware. Layered *after* `.route(...)`
+        // calls so it applies uniformly; passes everything through when
+        // no admin is configured (tests + fresh installs ride this path).
+        // The allowlist inside `auth_api::require_auth` keeps PXE-essential
+        // endpoints reachable for iPXE clients that can't authenticate.
+        .layer(axum::middleware::from_fn_with_state(
+            state.clone(),
+            auth_api::require_auth,
+        ))
         .layer(TraceLayer::new_for_http())
         // 16 GiB upload cap — ISOs are big; chunks stream so this isn't memory use.
         .layer(DefaultBodyLimit::max(16 * 1024 * 1024 * 1024))
         .with_state(state)
 }
 
+// ─── SSO config endpoints ─────────────────────────────────────────────────
+
+async fn api_sso_get(State(state): State<AppState>) -> Json<SsoConfig> {
+    // We deliberately do not redact the metadata — the operator who's
+    // signed in needs to be able to round-trip it. /api/sso requires
+    // the auth middleware anyway, so unauthenticated callers can't see
+    // it once admin is configured.
+    Json(state.sso.snapshot())
+}
+
+async fn api_sso_put(State(state): State<AppState>, Json(body): Json<SsoConfig>) -> Response {
+    match state.sso.replace(body) {
+        Ok(cfg) => (StatusCode::OK, Json(cfg)).into_response(),
+        Err(Error::Invalid(msg)) => {
+            (StatusCode::BAD_REQUEST, msg).into_response()
+        }
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("{e}")).into_response(),
+    }
+}
+
 // ─── UI ────────────────────────────────────────────────────────────────────
 
 async fn index(State(state): State<AppState>) -> Response {
-    let html = openpxe_webui::index_html(&state.public_base_url);
+    // The asset version pin in index.html (`?v=…`) is what makes
+    // browsers re-fetch JS/CSS after an upgrade. We use the OpenPXE
+    // binary version — every release ships a new value, every release
+    // forces a fresh URL on each asset.
+    let html = openpxe_webui::index_html(&state.public_base_url, env!("CARGO_PKG_VERSION"));
     (
-        [(
+        [
-            header::CONTENT_TYPE,
+            (
-            HeaderValue::from_static("text/html; charset=utf-8"),
+                header::CONTENT_TYPE,
-        )],
+                HeaderValue::from_static("text/html; charset=utf-8"),
+            ),
+            // index.html itself must never be cached — that's how the
+            // browser learns about a new `?v=…` value for the assets.
+            (
+                header::CACHE_CONTROL,
+                HeaderValue::from_static("no-cache, must-revalidate"),
+            ),
+        ],
         html,
     )
         .into_response()
 }
 
+/// Cache-Control header value used for the bundled JS/CSS/SVG assets.
+/// We pin a 1-day TTL so a long-lived deployment doesn't re-fetch the
+/// same bytes on every page-load, but require revalidation — combined
+/// with the `?v=<version>` query string in index.html, the practical
+/// upper bound on caching across an upgrade is "until the operator
+/// reloads".
+const ASSET_CACHE_CONTROL: HeaderValue =
+    HeaderValue::from_static("no-cache, must-revalidate");
+
 async fn ui_js() -> Response {
     (
-        [(
+        [
-            header::CONTENT_TYPE,
+            (
-            HeaderValue::from_static("application/javascript"),
+                header::CONTENT_TYPE,
-        )],
+                HeaderValue::from_static("application/javascript"),
+            ),
+            (header::CACHE_CONTROL, ASSET_CACHE_CONTROL),
+        ],
         openpxe_webui::app_js(),
     )
         .into_response()
@@ -137,29 +241,148 @@ async fn ui_js() -> Response {
 
 async fn ui_css() -> Response {
     (
-        [(header::CONTENT_TYPE, HeaderValue::from_static("text/css"))],
+        [
+            (header::CONTENT_TYPE, HeaderValue::from_static("text/css")),
+            (header::CACHE_CONTROL, ASSET_CACHE_CONTROL),
+        ],
         openpxe_webui::app_css(),
     )
         .into_response()
 }
 
-async fn ui_logo() -> Response {
+async fn ui_logo(State(state): State<AppState>) -> Response {
+    // Custom override first; fall back to the bundled rainbow-horizon
+    // SVG. We resolve the override on each request rather than caching
+    // because operators may upload/clear from the Settings tab while the
+    // server is live, and we want them to see their change immediately
+    // without bouncing the binary.
+    if let Some(path) = state.branding.logo_path() {
+        let mime = state
+            .branding
+            .logo_mime()
+            .unwrap_or_else(|| "image/svg+xml".to_string());
+        match tokio::fs::read(&path).await {
+            Ok(bytes) => {
+                let ct = match HeaderValue::from_str(&mime) {
+                    Ok(v) => v,
+                    Err(_) => HeaderValue::from_static("application/octet-stream"),
+                };
+                return (
+                    [
+                        (header::CONTENT_TYPE, ct),
+                        (
+                            header::CACHE_CONTROL,
+                            HeaderValue::from_static("no-cache, max-age=0"),
+                        ),
+                    ],
+                    bytes,
+                )
+                    .into_response();
+            }
+            Err(e) => {
+                tracing::warn!(
+                    target: "openpxe::http::branding",
+                    error = %e, "failed to read custom logo; falling back to bundled"
+                );
+            }
+        }
+    }
     (
-        [(
+        [
-            header::CONTENT_TYPE,
+            (
-            HeaderValue::from_static("image/svg+xml"),
+                header::CONTENT_TYPE,
-        )],
+                HeaderValue::from_static("image/svg+xml"),
+            ),
+            (header::CACHE_CONTROL, ASSET_CACHE_CONTROL),
+        ],
         openpxe_webui::logo_svg(),
     )
         .into_response()
 }
 
+/// v0.4.61: PXE menu logo composed for the iPXE `console --picture`
+/// call. The operator can upload any raster image (PNG / JPEG / WebP /
+/// GIF) of any aspect ratio; this handler decodes it, draws it
+/// centered-top onto a fixed 1024×768 canvas, and returns PNG bytes.
+/// That gives the same look as iVentoy regardless of what the operator
+/// uploaded — a portrait logo, a wide wordmark, a square monogram all
+/// land in the same place on the boot screen.
+///
+/// SVG uploads still 404 here — iPXE can't rasterize SVG, and rather
+/// than haul in `resvg` we ask the operator to provide a raster when
+/// they want a custom PXE-side logo. (The WebUI keeps using the SVG.)
+async fn ui_pxe_logo(State(state): State<AppState>) -> Response {
+    let Some(path) = state.branding.logo_path() else {
+        return (StatusCode::NOT_FOUND, "no custom logo configured").into_response();
+    };
+    let Some(mime) = state.branding.logo_mime() else {
+        return (StatusCode::NOT_FOUND, "no mime recorded").into_response();
+    };
+    if mime == "image/svg+xml" {
+        return (
+            StatusCode::NOT_FOUND,
+            "operator-uploaded logo is SVG; PXE menu requires a raster (PNG / JPEG / WebP / GIF)",
+        )
+            .into_response();
+    }
+    let bytes = match tokio::fs::read(&path).await {
+        Ok(b) => b,
+        Err(e) => {
+            return (
+                StatusCode::NOT_FOUND,
+                format!("custom logo unreadable: {e}"),
+            )
+                .into_response();
+        }
+    };
+    // Compose to a fixed 1024×768 PNG so the PXE menu paints the logo
+    // centered-top regardless of the operator's source dimensions. The
+    // `image` crate is pure-Rust + sync; offload to a blocking task
+    // because Lanczos resampling on a 4K source can take tens of
+    // milliseconds and we don't want to block the executor.
+    let composed =
+        match tokio::task::spawn_blocking(move || openpxe_iso_store::pxe_logo::compose_pxe_logo(&bytes))
+            .await
+        {
+            Ok(Ok(png)) => png,
+            Ok(Err(e)) => {
+                tracing::warn!(
+                    target: "openpxe::http::branding",
+                    error = %e, "failed to compose PXE logo PNG"
+                );
+                return (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    format!("failed to compose PXE logo: {e}"),
+                )
+                    .into_response();
+            }
+            Err(e) => {
+                return (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    format!("pxe-logo task failed: {e}"),
+                )
+                    .into_response();
+            }
+        };
+    (
+        [
+            (header::CONTENT_TYPE, HeaderValue::from_static("image/png")),
+            (header::CACHE_CONTROL, ASSET_CACHE_CONTROL),
+        ],
+        composed,
+    )
+        .into_response()
+}
+
 async fn ui_loader() -> Response {
     (
-        [(
+        [
-            header::CONTENT_TYPE,
+            (
-            HeaderValue::from_static("image/svg+xml"),
+                header::CONTENT_TYPE,
-        )],
+                HeaderValue::from_static("image/svg+xml"),
+            ),
+            (header::CACHE_CONTROL, ASSET_CACHE_CONTROL),
+        ],
         openpxe_webui::loader_svg(),
     )
         .into_response()
@@ -298,7 +521,7 @@ async fn boot_sub(
         "_local" => render_local_hdd(base),
         "_linux_menu" => render_family_menu(&isos, base, false),
         "_windows_menu" => render_family_menu(&isos, base, true),
-        "_tools_menu" => render_tools_menu(base),
+        "_tools_menu" => render_tools_menu(&isos, base),
         "_util" => render_util(base),
         "_shell" => render_shell(base),
         "_nic" => render_nic_info(base),
@@ -620,6 +843,295 @@ async fn api_clear_iso_password(
     }
 }
 
+// ─── ISO category (OS / Tools) ────────────────────────────────────────────
+
+#[derive(Debug, Deserialize)]
+struct SetCategoryBody {
+    /// `"os"` or `"tools"` — matches `IsoCategory`'s snake_case serde
+    /// repr. Anything else returns 400 with the allowed set spelled out.
+    category: String,
+}
+
+async fn api_set_iso_category(
+    State(state): State<AppState>,
+    AxumPath(id): AxumPath<String>,
+    Json(body): Json<SetCategoryBody>,
+) -> Response {
+    let cat = match body.category.as_str() {
+        "os" => IsoCategory::Os,
+        "tools" => IsoCategory::Tools,
+        other => {
+            return (
+                StatusCode::BAD_REQUEST,
+                format!("unknown category '{other}'; expected one of: os, tools"),
+            )
+                .into_response();
+        }
+    };
+    match state.iso_store.set_category(&id, cat).await {
+        Ok(meta) => {
+            tracing::info!(
+                target: "openpxe::http::iso",
+                iso = %id, category = ?cat,
+                "iso category updated"
+            );
+            (StatusCode::OK, Json(meta)).into_response()
+        }
+        Err(Error::Invalid(msg)) => (StatusCode::NOT_FOUND, msg).into_response(),
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("{e}")).into_response(),
+    }
+}
+
+// ─── Disk space (Storage tab) ─────────────────────────────────────────────
+
+async fn api_storage_disk(State(state): State<AppState>) -> Json<serde_json::Value> {
+    // statvfs on the directory that holds the ISO store. We deliberately
+    // don't walk the directory ourselves — the kernel already tracks
+    // free/total at the volume level and that's the only number the
+    // operator actually cares about for "do I have room for one more
+    // 5 GB ISO?". `statvfs` itself lives in iso-store to keep the
+    // http-api crate free of `unsafe`.
+    let dir = state.iso_store.iso_dir();
+    let (total, available) = state.iso_store.disk_usage().unwrap_or((0, 0));
+    let used = total.saturating_sub(available);
+    Json(json!({
+        "path": dir.to_string_lossy(),
+        "total_bytes": total,
+        "available_bytes": available,
+        "used_bytes": used,
+    }))
+}
+
+// ─── Branding (custom logo) ───────────────────────────────────────────────
+
+async fn api_branding_upload(
+    State(state): State<AppState>,
+    mut multipart: Multipart,
+) -> Response {
+    while let Ok(Some(field)) = multipart.next_field().await {
+        let name = field.name().unwrap_or("").to_string();
+        if name != "file" && name != "logo" {
+            continue;
+        }
+        let mime = field.content_type().unwrap_or("").to_string();
+        if !ALLOWED_LOGO_MIMES.iter().any(|m| *m == mime) {
+            return (
+                StatusCode::BAD_REQUEST,
+                format!(
+                    "unsupported MIME '{mime}'. Allowed: {}",
+                    ALLOWED_LOGO_MIMES.join(", ")
+                ),
+            )
+                .into_response();
+        }
+        // Pre-read into memory so we can enforce the size cap before
+        // hitting disk. Logos are tiny by definition.
+        let bytes = match field.bytes().await {
+            Ok(b) => b,
+            Err(e) => {
+                return (StatusCode::BAD_REQUEST, format!("read body: {e}")).into_response()
+            }
+        };
+        if bytes.len() > MAX_LOGO_BYTES {
+            return (
+                StatusCode::PAYLOAD_TOO_LARGE,
+                format!(
+                    "logo too large ({} bytes, max {})",
+                    bytes.len(),
+                    MAX_LOGO_BYTES
+                ),
+            )
+                .into_response();
+        }
+        let Some(ext) = ext_for_mime(&mime) else {
+            return (StatusCode::BAD_REQUEST, "unsupported MIME").into_response();
+        };
+        match state.branding.set_logo(&mime, ext, &bytes) {
+            Ok(filename) => {
+                return (
+                    StatusCode::OK,
+                    Json(json!({
+                        "filename": filename,
+                        "mime": mime,
+                        "size_bytes": bytes.len(),
+                    })),
+                )
+                    .into_response()
+            }
+            Err(e) => {
+                return (StatusCode::INTERNAL_SERVER_ERROR, format!("{e}")).into_response()
+            }
+        }
+    }
+    (StatusCode::BAD_REQUEST, "no 'file' part").into_response()
+}
+
+async fn api_branding_clear(State(state): State<AppState>) -> Response {
+    match state.branding.clear_logo() {
+        Ok(()) => StatusCode::NO_CONTENT.into_response(),
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("{e}")).into_response(),
+    }
+}
+
+// ─── API reference (Settings → bottom) ────────────────────────────────────
+
+async fn api_docs() -> Json<serde_json::Value> {
+    // Hand-curated rather than introspected from axum because:
+    //   1. axum's runtime route table doesn't carry parameter docs;
+    //   2. the WebUI surfaces this as a readable list, not as an OpenAPI
+    //      spec — readers are operators chasing an integration, not
+    //      machines.
+    // Keep this in lockstep with `build_router` when adding endpoints.
+    Json(json!({
+        "version": env!("CARGO_PKG_VERSION"),
+        "groups": [
+            {
+                "name": "Status & health",
+                "endpoints": [
+                    {"method": "GET", "path": "/healthz",
+                     "summary": "Liveness — always 200 OK while the HTTP task is alive."},
+                    {"method": "GET", "path": "/readyz",
+                     "summary": "Readiness — 200 only when iPXE binaries are bundled and the ISO directory is readable."},
+                    {"method": "GET", "path": "/api/status",
+                     "summary": "Dashboard JSON — versions, counts, settings snapshot, uptime."},
+                    {"method": "GET", "path": "/metrics",
+                     "summary": "Prometheus text exposition (counters + gauges)."},
+                ],
+            },
+            {
+                "name": "ISO images",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/isos",
+                     "summary": "List ISOs (local + NFS) with size, family, boot entries, category."},
+                    {"method": "POST", "path": "/api/isos",
+                     "summary": "Legacy single-shot multipart upload. Prefer /api/uploads for big files."},
+                    {"method": "DELETE", "path": "/api/isos/:id",
+                     "summary": "Delete a local ISO and its sidecar metadata."},
+                    {"method": "PUT", "path": "/api/isos/:id/password",
+                     "summary": "Set or update an ISO's boot password (bcrypt-hashed; plaintext never stored)."},
+                    {"method": "DELETE", "path": "/api/isos/:id/password",
+                     "summary": "Clear an ISO's boot password."},
+                    {"method": "PUT", "path": "/api/isos/:id/category",
+                     "summary": "Set the menu category. Body: { \"category\": \"os\" | \"tools\" }."},
+                ],
+            },
+            {
+                "name": "Chunked uploads",
+                "endpoints": [
+                    {"method": "POST", "path": "/api/uploads",
+                     "summary": "Begin a chunked upload session. Body: { \"filename\", \"size_bytes\" }."},
+                    {"method": "PUT", "path": "/api/uploads/:upload_id",
+                     "summary": "Append a chunk. Headers: x-openpxe-upload-offset, x-openpxe-upload-complete."},
+                    {"method": "DELETE", "path": "/api/uploads/:upload_id",
+                     "summary": "Abort a chunked upload session and remove the .partial file."},
+                ],
+            },
+            {
+                "name": "NFS shares",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/nfs",
+                     "summary": "List configured NFS shares with mount state and iso counts."},
+                    {"method": "POST", "path": "/api/nfs",
+                     "summary": "Mount an NFS share. Body: { server, export, version, read_only }."},
+                    {"method": "DELETE", "path": "/api/nfs/:id",
+                     "summary": "Unmount a share and drop its entries from the ISO store."},
+                    {"method": "POST", "path": "/api/nfs/:id/scan",
+                     "summary": "Re-walk a mounted share for ISOs."},
+                ],
+            },
+            {
+                "name": "Network",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/network",
+                     "summary": "Detected NIC, server IP, subnet, gateway, advertised base URL."},
+                    {"method": "PUT", "path": "/api/network",
+                     "summary": "Update the informational DNS server hint (does not run DNS)."},
+                ],
+            },
+            {
+                "name": "Settings",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/settings",
+                     "summary": "Current runtime settings (Windows toggle, timeout, dns hint, …)."},
+                    {"method": "PUT", "path": "/api/settings",
+                     "summary": "Replace runtime settings. Guards against enabling Windows when wimboot isn't bundled."},
+                    {"method": "POST", "path": "/api/branding/logo",
+                     "summary": "Upload a custom WebUI logo (multipart 'file', PNG/SVG/JPEG/WebP/GIF up to 2 MB)."},
+                    {"method": "DELETE", "path": "/api/branding/logo",
+                     "summary": "Remove the custom logo and revert to the bundled mark."},
+                    {"method": "GET", "path": "/branding/pxe-logo",
+                     "summary": "Raster form of the operator's logo for the iPXE menu's `console --picture`. SVG uploads 404 here."},
+                    {"method": "GET", "path": "/api/sso",
+                     "summary": "Current SAML SSO configuration."},
+                    {"method": "PUT", "path": "/api/sso",
+                     "summary": "Replace SAML SSO configuration. Body: { enabled, idp_name, metadata, metadata_url }."},
+                    {"method": "GET", "path": "/api/docs",
+                     "summary": "This API reference."},
+                ],
+            },
+            {
+                "name": "Auth (Forms)",
+                "endpoints": [
+                    {"method": "POST", "path": "/api/setup",
+                     "summary": "First-run admin bootstrap. Body: { username, password }. Refuses after the admin exists."},
+                    {"method": "POST", "path": "/api/login",
+                     "summary": "Sign in. Body: { username, password }. Sets the openpxe_session cookie."},
+                    {"method": "POST", "path": "/api/logout",
+                     "summary": "Revoke the current session and clear the cookie."},
+                    {"method": "GET", "path": "/api/me",
+                     "summary": "Auth status — { setup_required, authenticated, user }. Always 200."},
+                    {"method": "PUT", "path": "/api/me/credentials",
+                     "summary": "Rotate the admin's credentials. Body: { current_password, new_username?, new_password? }. Revokes all other sessions on success."},
+                ],
+            },
+            {
+                "name": "Storage telemetry",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/storage/disk",
+                     "summary": "Free / used / total bytes for the volume hosting the ISO directory."},
+                ],
+            },
+            {
+                "name": "Queued Deployment",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/queue",
+                     "summary": "List queue entries (waiting + assigned)."},
+                    {"method": "POST", "path": "/api/queue/assign",
+                     "summary": "Assign a target image to queued clients. Body: { target, entry_ids }."},
+                    {"method": "DELETE", "path": "/api/queue/:entry_id",
+                     "summary": "Release a queue entry without assigning."},
+                ],
+            },
+            {
+                "name": "Hosts & boot log",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/hosts",
+                     "summary": "List per-MAC boot bindings."},
+                    {"method": "POST", "path": "/api/hosts",
+                     "summary": "Pin a MAC to a boot target. Body: { mac, target, label }."},
+                    {"method": "DELETE", "path": "/api/hosts/:mac",
+                     "summary": "Remove a binding."},
+                    {"method": "GET", "path": "/api/boot-log",
+                     "summary": "Ring of recent boot events (timestamp, mac, ip, target)."},
+                ],
+            },
+            {
+                "name": "Operator console",
+                "endpoints": [
+                    {"method": "GET", "path": "/api/clients",
+                     "summary": "Live PXE-client registry — MAC, last IP, arch, events."},
+                    {"method": "GET", "path": "/api/log/recent",
+                     "summary": "Ring of recent server log lines for the Terminal tab."},
+                    {"method": "GET", "path": "/api/log/stream",
+                     "summary": "Server-Sent Events stream of log lines."},
+                    {"method": "POST", "path": "/api/terminal",
+                     "summary": "Run a whitelisted operator command. Body: { command }."},
+                ],
+            },
+        ],
+    }))
+}
+
 async fn api_upload_iso(State(state): State<AppState>, mut multipart: Multipart) -> Response {
     // Walk multipart parts until we find the file. Each branch logs so an
     // operator chasing a "stuck" upload in the Terminal tab can see
@@ -979,6 +1491,7 @@ async fn api_status(State(state): State<AppState>) -> Json<serde_json::Value> {
         "nfs_count": nfs.len(),
         "nfs_active": nfs_active,
         "host_bindings": state.hosts.len(),
+        "custom_logo": state.branding.has_logo(),
         "uptime_secs": uptime_secs,
         "started_at": state.started_at,
         "nic_name": state.nic_name,

crates/http-api/src/auth.rs

@@ -0,0 +1,485 @@
+//! Forms auth layer — sessions, login, setup, middleware.
+//!
+//! Three states:
+//!
+//! * **Unconfigured** (`AdminStore::is_configured() == false`). The
+//!   middleware passes every request through — there's no one to gate
+//!   against. The UI's `/api/me` returns `setup_required: true` and the
+//!   front-end pushes the operator into the first-run flow.
+//! * **Logged in**. The session cookie maps to an in-memory session
+//!   record with an idle expiry; `/api/me` returns the username.
+//! * **Logged out**. The middleware bounces `/api/*` (with the PXE
+//!   allowlist below) to `401 Unauthorized`; the front-end intercepts
+//!   that and shows `/login`.
+//!
+//! Allowlist for unauthenticated access *after* the admin is set up:
+//!
+//! * everything outside `/api/*` (the WebUI bundle, asset chrome, PXE
+//!   script endpoints, the bundled iPXE/wimboot binaries, ISO bytes,
+//!   liveness/readiness probes, the Prometheus scrape) — these are
+//!   read-only or PXE-essential and breaking them locks out booting
+//!   machines that have no way to authenticate;
+//! * `/api/setup`, `/api/login`, `/api/me` (the auth surface itself);
+//! * `/api/queue/join`, `/api/queue/poll/:entry_id` (iPXE long-poll for
+//!   Queued Deployment — the iPXE client can't send a session cookie).
+//!
+//! Everything else inside `/api/*` requires a valid session.
+
+use crate::state::AppState;
+use axum::{
+    body::Body,
+    extract::{Request, State},
+    http::{header, HeaderValue, StatusCode},
+    middleware::Next,
+    response::{IntoResponse, Response},
+    Json,
+};
+use openpxe_core::AdminPublic;
+use parking_lot::RwLock;
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+use std::collections::HashMap;
+use std::sync::Arc;
+use std::time::{Duration, Instant};
+use uuid::Uuid;
+
+/// Idle session lifetime. Sliding — every authenticated request resets
+/// the expiry. 24h is the Sonarr default and matches what most operators
+/// expect for an on-prem admin console.
+const SESSION_TTL: Duration = Duration::from_hours(24);
+
+/// Name of the cookie we set/read. Distinct from a generic `session=`
+/// to avoid collisions with anything else sharing the host.
+pub const SESSION_COOKIE: &str = "openpxe_session";
+
+#[derive(Debug, Clone)]
+struct Session {
+    username: String,
+    expires_at: Instant,
+}
+
+/// In-memory session table. Cheap to clone (Arc-shared) and contention
+/// is rare — operators sign in once per browser session.
+#[derive(Debug, Clone, Default)]
+pub struct SessionStore {
+    inner: Arc<RwLock<HashMap<String, Session>>>,
+}
+
+impl SessionStore {
+    /// Mint a fresh session for `username` and return the opaque cookie
+    /// value. UUID v4 gives us 122 random bits — comfortably more than
+    /// the 64-128 bits typical for session IDs.
+    #[must_use]
+    pub fn create(&self, username: &str) -> String {
+        let id = Uuid::new_v4().simple().to_string();
+        let session = Session {
+            username: username.to_string(),
+            expires_at: Instant::now() + SESSION_TTL,
+        };
+        self.inner.write().insert(id.clone(), session);
+        id
+    }
+
+    /// Resolve a cookie value to the owning username, refreshing the
+    /// idle timer. Returns `None` for missing / expired sessions and
+    /// proactively evicts the expired entry so the map doesn't grow
+    /// unbounded across long-lived deployments.
+    pub fn touch(&self, id: &str) -> Option<String> {
+        let mut g = self.inner.write();
+        let s = g.get_mut(id)?;
+        if s.expires_at <= Instant::now() {
+            g.remove(id);
+            return None;
+        }
+        s.expires_at = Instant::now() + SESSION_TTL;
+        Some(s.username.clone())
+    }
+
+    /// Invalidate one session (the user's `/api/logout`).
+    pub fn revoke(&self, id: &str) {
+        self.inner.write().remove(id);
+    }
+
+    /// Invalidate every session — used after a credentials rotation so
+    /// stale cookies for the old password can't keep operating.
+    pub fn revoke_all(&self) {
+        self.inner.write().clear();
+    }
+
+    /// Periodic / opportunistic GC. Not currently scheduled (we evict
+    /// on touch), but exposed for a future janitor task.
+    pub fn gc(&self) {
+        let now = Instant::now();
+        self.inner.write().retain(|_, s| s.expires_at > now);
+    }
+
+    #[must_use]
+    pub fn len(&self) -> usize {
+        self.inner.read().len()
+    }
+
+    #[must_use]
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+}
+
+// ── Cookie helpers ────────────────────────────────────────────────────────
+
+fn cookie_attrs(value: &str, max_age: Option<i64>) -> String {
+    // Same flags FleetDM and Sonarr ship by default:
+    //   - HttpOnly: blocks JS access (XSS containment)
+    //   - SameSite=Lax: allows top-level GET navigations from the IdP
+    //     to land authenticated when SSO arrives, but blocks
+    //     cross-site POST CSRF;
+    //   - Path=/: the cookie applies to the whole app;
+    //   - no Secure flag yet — many operators host on plain http://
+    //     LAN IPs (Unraid templates default to that); we'll add Secure
+    //     opportunistically when we add a TLS terminator option.
+    // SESSION_TTL fits in 32 bits comfortably (24h ≈ 86400 seconds); we
+    // never overflow i64, but clippy's `cast_possible_wrap` lint wants
+    // us to be explicit. `cast_signed` is the documented form.
+    let lifetime = max_age.unwrap_or_else(|| SESSION_TTL.as_secs().cast_signed());
+    format!(
+        "{SESSION_COOKIE}={value}; Path=/; HttpOnly; SameSite=Lax; Max-Age={lifetime}"
+    )
+}
+
+fn parse_cookie(headers: &axum::http::HeaderMap) -> Option<String> {
+    // `Cookie: a=b; c=d` parsing — small enough not to drag in a crate.
+    let raw = headers.get(header::COOKIE)?.to_str().ok()?;
+    for part in raw.split(';') {
+        let part = part.trim();
+        if let Some(v) = part.strip_prefix(&format!("{SESSION_COOKIE}=")) {
+            return Some(v.to_string());
+        }
+    }
+    None
+}
+
+// ── Middleware ────────────────────────────────────────────────────────────
+
+/// Return `true` if `path` is on the allowlist and should bypass the
+/// session check. The middleware applies this rule only when the admin
+/// account is configured; before then everything is open.
+fn is_public_path(path: &str) -> bool {
+    // Non-API paths: WebUI bundle, PXE chain, ISO bytes, health probes,
+    // metrics. All read-only / PXE-essential.
+    if !path.starts_with("/api/") {
+        return true;
+    }
+    // Auth surface and iPXE long-poll endpoints (no cookie available).
+    matches!(
+        path,
+        "/api/setup" | "/api/login" | "/api/logout" | "/api/me"
+    ) || path.starts_with("/api/queue/join")
+        || path.starts_with("/api/queue/poll/")
+}
+
+/// Axum middleware: gate `/api/*` behind a valid session, with the
+/// allowlist above. `State<AppState>` reaches in for the admin store +
+/// session store.
+pub async fn require_auth(
+    State(state): State<AppState>,
+    req: Request<Body>,
+    next: Next,
+) -> Response {
+    // Bypass entirely while unconfigured. The /api/setup endpoint is
+    // the only one that can flip this back to "configured", and it
+    // refuses to run a second time. Tests + fresh installs ride this
+    // path.
+    if !state.admin.is_configured() {
+        return next.run(req).await;
+    }
+    let path = req.uri().path();
+    if is_public_path(path) {
+        return next.run(req).await;
+    }
+    // Authenticated path. The cookie must be present, map to a live
+    // session, and the TTL refresh happens as a side-effect.
+    let token = parse_cookie(req.headers());
+    if let Some(t) = token {
+        if state.sessions.touch(&t).is_some() {
+            return next.run(req).await;
+        }
+    }
+    (
+        StatusCode::UNAUTHORIZED,
+        Json(json!({ "error": "authentication required" })),
+    )
+        .into_response()
+}
+
+// ── Handlers ──────────────────────────────────────────────────────────────
+
+#[derive(Debug, Deserialize)]
+pub struct SetupBody {
+    pub username: String,
+    pub password: String,
+}
+
+/// First-run setup. Refuses to run once an admin already exists — that
+/// guards against a leaked WebUI being re-bootstrapped by an attacker
+/// who's seen the deployment URL. After bootstrap, the new session
+/// cookie is set so the operator goes straight to the dashboard.
+pub async fn api_setup(
+    State(state): State<AppState>,
+    Json(body): Json<SetupBody>,
+) -> Response {
+    if state.admin.is_configured() {
+        return (
+            StatusCode::CONFLICT,
+            Json(json!({ "error": "admin account already configured" })),
+        )
+            .into_response();
+    }
+    match state.admin.bootstrap(&body.username, &body.password) {
+        Ok(pub_) => {
+            let session = state.sessions.create(&pub_.username);
+            login_response(StatusCode::CREATED, &pub_, &session)
+        }
+        Err(openpxe_core::Error::Invalid(msg)) => {
+            (StatusCode::BAD_REQUEST, Json(json!({ "error": msg }))).into_response()
+        }
+        Err(e) => (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(json!({ "error": format!("{e}") })),
+        )
+            .into_response(),
+    }
+}
+
+#[derive(Debug, Deserialize)]
+pub struct LoginBody {
+    pub username: String,
+    pub password: String,
+}
+
+pub async fn api_login(State(state): State<AppState>, Json(body): Json<LoginBody>) -> Response {
+    // Brief, deliberately vague — "invalid credentials" rather than
+    // "no such user" / "wrong password". Same anti-enumeration posture
+    // as Sonarr/Radarr.
+    let pub_ = match state.admin.verify(&body.username, &body.password) {
+        Ok(Some(u)) => u,
+        Ok(None) => {
+            return (
+                StatusCode::UNAUTHORIZED,
+                Json(json!({ "error": "invalid username or password" })),
+            )
+                .into_response();
+        }
+        Err(e) => {
+            return (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                Json(json!({ "error": format!("{e}") })),
+            )
+                .into_response();
+        }
+    };
+    let session = state.sessions.create(&pub_.username);
+    login_response(StatusCode::OK, &pub_, &session)
+}
+
+pub async fn api_logout(
+    State(state): State<AppState>,
+    headers: axum::http::HeaderMap,
+) -> Response {
+    if let Some(t) = parse_cookie(&headers) {
+        state.sessions.revoke(&t);
+    }
+    // Stomp the cookie unconditionally — even if the request didn't
+    // carry one, the browser shouldn't keep a stale value.
+    let mut resp = StatusCode::NO_CONTENT.into_response();
+    resp.headers_mut().insert(
+        header::SET_COOKIE,
+        HeaderValue::from_str(&cookie_attrs("", Some(0))).unwrap(),
+    );
+    resp
+}
+
+/// Status surface for the front-end shell. Returns four cases:
+///
+/// * `setup_required: true` — no admin yet; show first-run page.
+/// * `authenticated: false` — admin exists, no session; show login.
+/// * `authenticated: true` + `user` — let the dashboard load.
+pub async fn api_me(State(state): State<AppState>, headers: axum::http::HeaderMap) -> Response {
+    if !state.admin.is_configured() {
+        return (
+            StatusCode::OK,
+            Json(json!({
+                "setup_required": true,
+                "authenticated": false,
+            })),
+        )
+            .into_response();
+    }
+    let token = parse_cookie(&headers);
+    let username = token.as_deref().and_then(|t| state.sessions.touch(t));
+    match username {
+        Some(u) => (
+            StatusCode::OK,
+            Json(json!({
+                "setup_required": false,
+                "authenticated": true,
+                "user": state.admin.snapshot(),
+                "session_user": u,
+            })),
+        )
+            .into_response(),
+        None => (
+            StatusCode::OK,
+            Json(json!({
+                "setup_required": false,
+                "authenticated": false,
+            })),
+        )
+            .into_response(),
+    }
+}
+
+#[derive(Debug, Deserialize)]
+pub struct UpdateCredentialsBody {
+    pub current_password: String,
+    #[serde(default)]
+    pub new_username: Option<String>,
+    #[serde(default)]
+    pub new_password: Option<String>,
+}
+
+/// Rotate the admin's username and/or password. Auth middleware has
+/// already proved the caller owns a session; we additionally require
+/// the *current* password to prove "person at the keyboard right now".
+/// On success we issue a fresh session cookie keyed to the (possibly
+/// new) username and revoke every prior session so a stolen cookie
+/// from before the rotation stops working.
+pub async fn api_update_credentials(
+    State(state): State<AppState>,
+    Json(body): Json<UpdateCredentialsBody>,
+) -> Response {
+    if !state.admin.is_configured() {
+        return (
+            StatusCode::CONFLICT,
+            Json(json!({ "error": "no admin configured" })),
+        )
+            .into_response();
+    }
+    let result = state.admin.update_credentials(
+        &body.current_password,
+        body.new_username.as_deref(),
+        body.new_password.as_deref(),
+    );
+    match result {
+        Ok(pub_) => {
+            state.sessions.revoke_all();
+            let session = state.sessions.create(&pub_.username);
+            login_response(StatusCode::OK, &pub_, &session)
+        }
+        Err(openpxe_core::Error::Invalid(msg)) => {
+            (StatusCode::BAD_REQUEST, Json(json!({ "error": msg }))).into_response()
+        }
+        Err(e) => (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(json!({ "error": format!("{e}") })),
+        )
+            .into_response(),
+    }
+}
+
+#[derive(Debug, Serialize)]
+struct LoginPayload<'a> {
+    user: &'a AdminPublic,
+    authenticated: bool,
+}
+
+fn login_response(status: StatusCode, user: &AdminPublic, session: &str) -> Response {
+    let body = Json(LoginPayload {
+        user,
+        authenticated: true,
+    });
+    let mut resp = (status, body).into_response();
+    resp.headers_mut().insert(
+        header::SET_COOKIE,
+        HeaderValue::from_str(&cookie_attrs(session, None)).unwrap(),
+    );
+    resp
+}
+
+// ── Tests ─────────────────────────────────────────────────────────────────
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn session_create_touch_revoke() {
+        let s = SessionStore::default();
+        assert!(s.is_empty());
+        let t = s.create("admin");
+        assert_eq!(s.len(), 1);
+        assert_eq!(s.touch(&t).as_deref(), Some("admin"));
+        s.revoke(&t);
+        assert!(s.is_empty());
+        // Stale token doesn't error, just returns None.
+        assert!(s.touch(&t).is_none());
+    }
+
+    #[test]
+    fn session_revoke_all_clears() {
+        let s = SessionStore::default();
+        let _ = s.create("a");
+        let _ = s.create("b");
+        assert_eq!(s.len(), 2);
+        s.revoke_all();
+        assert!(s.is_empty());
+    }
+
+    #[test]
+    fn public_path_allowlist() {
+        // PXE + chrome paths bypass auth.
+        for p in [
+            "/", "/assets/app.js", "/boot.ipxe", "/boot/fake.ipxe",
+            "/iso/fake.iso", "/ipxe/snponly.efi", "/healthz", "/readyz",
+            "/metrics",
+            // v0.4.6: iPXE fetches this for `console --picture` before
+            // it can possibly have a session cookie.
+            "/branding/pxe-logo",
+        ] {
+            assert!(is_public_path(p), "expected {p} to be public");
+        }
+        // Auth surface itself is public.
+        for p in ["/api/setup", "/api/login", "/api/logout", "/api/me"] {
+            assert!(is_public_path(p), "expected {p} to be public");
+        }
+        // iPXE long-poll endpoints are public (no cookie available).
+        assert!(is_public_path("/api/queue/join"));
+        assert!(is_public_path("/api/queue/poll/abc"));
+        // Everything else under /api/* must auth.
+        for p in [
+            "/api/isos",
+            "/api/isos/x/category",
+            "/api/storage/disk",
+            "/api/branding/logo",
+            "/api/sso",
+            "/api/hosts",
+        ] {
+            assert!(!is_public_path(p), "expected {p} to require auth");
+        }
+    }
+
+    #[test]
+    fn cookie_parse_picks_session_value() {
+        let mut h = axum::http::HeaderMap::new();
+        h.insert(
+            header::COOKIE,
+            HeaderValue::from_str(&format!("foo=bar; {SESSION_COOKIE}=abc123; baz=qux"))
+                .unwrap(),
+        );
+        assert_eq!(parse_cookie(&h).as_deref(), Some("abc123"));
+        // Different name → None.
+        let mut h2 = axum::http::HeaderMap::new();
+        h2.insert(header::COOKIE, HeaderValue::from_str("foo=bar").unwrap());
+        assert!(parse_cookie(&h2).is_none());
+        // No cookie header at all → None.
+        assert!(parse_cookie(&axum::http::HeaderMap::new()).is_none());
+    }
+}

crates/http-api/src/ipxe_script.rs

@@ -29,6 +29,15 @@ use std::fmt::Write as _;
 
 /// Top-level OpenPXE boot menu. Serialized identically for BIOS and UEFI
 /// clients because iPXE normalises the menu primitives across firmwares.
+///
+/// v0.4.6: rendered with an iVentoy-style polished frame — centered
+/// OpenPXE wordmark banner at the top (ASCII so every iPXE build can
+/// paint it), a footer carrying version + arch + firmware kind, and an
+/// optional `console --picture` directive that paints the operator's
+/// uploaded raster logo on top when the iPXE binary on the wire was
+/// built with PNG support. The ASCII banner is always rendered so
+/// even when the picture call no-ops the screen still reads as
+/// "OpenPXE — here is the menu" rather than a featureless box.
 #[must_use]
 pub fn render_menu(isos: &[IsoMeta], settings: &Settings, base_url: &str) -> String {
     let mut s = String::new();
@@ -47,8 +56,36 @@ pub fn render_menu(isos: &[IsoMeta], settings: &Settings, base_url: &str) -> Str
     let _ = writeln!(s, "set base-url {base}");
     let _ = writeln!(s, "set esc:hex 1b");
     let _ = writeln!(s, "set cls ${{esc:string}}[2J");
+    // v0.4.6: best-effort graphics console with the operator-uploaded
+    // raster logo. Falls back to plain text console on iPXE builds
+    // without PNG support — the `||` chain keeps a parse-clean
+    // single-statement form so even the strictest iPXE parsers accept
+    // it. The `console` reset at the end re-syncs the menu output.
+    let _ = writeln!(
+        s,
+        "console --picture {base}/branding/pxe-logo || console"
+    );
+    // Map iPXE's ${{buildarch}} + ${{platform}} into the human form the
+    // user asked for (e.g. "x86 BIOS", "x86_64 UEFI", "arm64 UEFI").
+    // iPXE evaluates `iseq` lazily, so we only set whichever line
+    // matches. Anything not on the allowlist falls through to a generic
+    // `<buildarch> <platform>` display.
+    let _ = writeln!(s, "set arch-label ${{buildarch}} ${{platform}}");
+    let _ = writeln!(
+        s,
+        "iseq ${{buildarch}} i386   && iseq ${{platform}} pcbios && set arch-label x86 BIOS         || iseq ${{buildarch}} x86_64 && iseq ${{platform}} efi    && set arch-label x86_64 UEFI      || iseq ${{buildarch}} arm64  && iseq ${{platform}} efi    && set arch-label arm64 UEFI       || true"
+    );
     let _ = writeln!(s, ":menu");
     let _ = writeln!(s, "menu OpenPXE - network boot menu");
+    // v0.4.61: we used to draw an ASCII OpenPXE wordmark here. Now
+    // that the bundled iPXE is built with `IMAGE_PNG`, the
+    // `console --picture` line at the top of this script paints the
+    // operator's actual logo (composed server-side into a 1024×768
+    // canvas with the logo centered at the top) — the ASCII banner
+    // became visual noise *on top* of the real image. Old iPXE
+    // builds without PNG fall through the `|| console` clause and
+    // simply show the menu without a logo, which is the correct
+    // graceful-degradation outcome.
     let _ = writeln!(
         s,
         "item --gap -- ------------------------- Default -------------------------"
@@ -82,6 +119,18 @@ pub fn render_menu(isos: &[IsoMeta], settings: &Settings, base_url: &str) -> Str
     let _ = writeln!(s, "item queue            Queued Deployment  (join queue)");
     let _ = writeln!(s, "item --gap");
     let _ = writeln!(s, "item --key x exit     Exit iPXE");
+    // v0.4.6 footer line. Sits just above the `choose` line so it's
+    // always visible regardless of how the menu paginates. iPXE
+    // interpolates `${arch-label}` (set near the top of this script)
+    // and `${version}` is the binary-baked iPXE version — *not* the
+    // OpenPXE version — so we hard-code the OpenPXE version string
+    // here.
+    let openpxe_version = env!("CARGO_PKG_VERSION");
+    let _ = writeln!(s, "item --gap");
+    let _ = writeln!(
+        s,
+        "item --gap --                 OpenPXE v{openpxe_version}  -  ${{arch-label}}"
+    );
 
     if matches!(settings.timeout_action, TimeoutAction::Stay) {
         let _ = writeln!(s, "choose --default {default_item} target || goto menu");
@@ -149,6 +198,13 @@ pub fn render_family_menu(isos: &[IsoMeta], base_url: &str, is_windows: bool) ->
         if !filter(iso.introspection.family) {
             continue;
         }
+        // v0.4.4: ISOs the operator flipped to the Tools category move
+        // out of the OS installer submenus entirely — they only appear
+        // under Tools. Without this filter the operator would see the
+        // same ISO in both menus.
+        if matches!(iso.category, openpxe_iso_store::IsoCategory::Tools) {
+            continue;
+        }
         for entry in &iso.boot_entries {
             let size_label = fmt_size_mib(iso.size_bytes);
             let key = hotkey_for_index(count);
@@ -210,15 +266,52 @@ fn hotkey_for_index(i: usize) -> String {
     }
 }
 
-/// Tools submenu — Utilities, Shell, NIC Info, Reboot, Exit to firmware.
+/// Tools submenu — Utilities, Shell, NIC Info, Reboot, Exit to firmware,
+/// plus any ISOs the operator flipped to [`IsoCategory::Tools`] in the
+/// Storage tab. The category-Tools ISOs render first so frequently used
+/// recovery / hardware tools are reachable with a single number key
+/// before the built-in shortcuts.
 #[must_use]
-pub fn render_tools_menu(base_url: &str) -> String {
+pub fn render_tools_menu(isos: &[IsoMeta], base_url: &str) -> String {
     let base = base_url.trim_end_matches('/');
     let mut s = String::new();
     let _ = writeln!(s, "#!ipxe");
     let _ = writeln!(s, "set base-url {base}");
     let _ = writeln!(s, ":menu");
     let _ = writeln!(s, "menu OpenPXE - Tools");
+
+    // Operator-categorized tool ISOs (hotkeys 1..9), each chained the
+    // same way as a per-family menu pick — through the boot-entry id
+    // route, carrying `?mac=${mac}` for Host log attribution.
+    let mut count = 0;
+    for iso in isos {
+        if !matches!(iso.category, openpxe_iso_store::IsoCategory::Tools) {
+            continue;
+        }
+        for entry in &iso.boot_entries {
+            let size_label = fmt_size_mib(iso.size_bytes);
+            let key = hotkey_for_index(count);
+            let lock = if iso.is_password_protected() {
+                "*"
+            } else {
+                " "
+            };
+            let _ = writeln!(
+                s,
+                "item {}{} {}[{:>6}] {}",
+                key,
+                entry.id,
+                lock,
+                size_label,
+                escape_label(&entry.title),
+            );
+            count += 1;
+        }
+    }
+    if count > 0 {
+        let _ = writeln!(s, "item --gap");
+    }
+
     let _ = writeln!(s, "item --key u util     Utilities  (memtest, ...)");
     let _ = writeln!(s, "item --key s shell    OpenPXE Shell");
     let _ = writeln!(s, "item --key n nic      Network Card Info");
@@ -252,7 +345,12 @@ pub fn render_tools_menu(base_url: &str) -> String {
         s,
         "iseq ${{target}} back     && chain {base}/boot.ipxe        || goto menu"
     );
-    let _ = writeln!(s, "goto menu");
+    // Fall-through for category-Tools ISO ids — same as the family
+    // submenu, carrying `?mac=${mac}` for the boot log.
+    let _ = writeln!(
+        s,
+        "chain {base}/boot/${{target}}.ipxe?mac=${{mac}} || goto menu"
+    );
     s
 }
 
@@ -526,12 +624,58 @@ mod password_tests {
         assert!(s.contains("chain http://10.0.0.5/boot/alpha-linux.ipxe"));
     }
 
+    #[test]
+    fn top_menu_has_polished_branding_and_arch_footer() {
+        // v0.4.6 polish + v0.4.61 image upgrade: the menu emits a
+        // `console --picture` line that the bundled iPXE (built with
+        // `IMAGE_PNG`) honours, plus an arch-resolved footer carrying
+        // the current OpenPXE version. The ASCII wordmark that used
+        // to live here was dropped in v0.4.61 — it duplicated the now-
+        // working image.
+        let settings = Settings::default();
+        let s = render_menu(&[], &settings, "http://10.0.0.5");
+        assert!(
+            s.contains("console --picture http://10.0.0.5/branding/pxe-logo"),
+            "missing console --picture line:\n{s}"
+        );
+        // Picture-or-text-console must be a single statement so older
+        // iPXE parsers don't choke on the chain.
+        assert!(s.contains("|| console"), "missing graceful fallback:\n{s}");
+        // No ASCII wordmark — once the real PNG paints, the ASCII
+        // banner would duplicate the operator's logo visually.
+        assert!(
+            !s.contains("___                   ___  __  __ ___"),
+            "ASCII banner shouldn't be emitted in v0.4.61+:\n{s}"
+        );
+        // Footer with version + arch interpolation. The version comes
+        // from CARGO_PKG_VERSION at compile time.
+        let version = env!("CARGO_PKG_VERSION");
+        assert!(
+            s.contains(&format!("OpenPXE v{version}")),
+            "footer missing OpenPXE version:\n{s}"
+        );
+        assert!(
+            s.contains("${arch-label}"),
+            "footer missing arch-label interpolation:\n{s}"
+        );
+        // No website URL — the design brief calls that out as tacky.
+        assert!(
+            !s.to_ascii_lowercase().contains("openpxe.com"),
+            "footer should not advertise the website:\n{s}"
+        );
+        // Arch-label mapping covers the three labels from the brief:
+        // "x86 BIOS", "x86_64 UEFI", "arm64 UEFI".
+        assert!(s.contains("x86 BIOS"), "{s}");
+        assert!(s.contains("x86_64 UEFI"), "{s}");
+        assert!(s.contains("arm64 UEFI"), "{s}");
+    }
+
     #[test]
     fn generated_scripts_do_not_emit_bare_or_trailing_fallbacks() {
         let settings = Settings::default();
         let scripts = [
             render_menu(&[], &settings, "http://10.0.0.5"),
-            render_tools_menu("http://10.0.0.5"),
+            render_tools_menu(&[], "http://10.0.0.5"),
             render_local_hdd("http://10.0.0.5"),
             render_util("http://10.0.0.5"),
             render_shell("http://10.0.0.5"),

crates/http-api/src/lib.rs

@@ -14,6 +14,7 @@
 #![forbid(unsafe_code)]
 
 pub mod app;
+pub mod auth;
 pub mod ipxe_script;
 pub mod iso_fs;
 pub mod log_stream;

crates/http-api/src/state.rs

@@ -1,6 +1,8 @@
 use crate::uploads::UploadSessions;
+use crate::auth::SessionStore;
 use openpxe_core::{
-    BootLog, ClientRegistry, DeploymentQueue, HostBindings, LogBus, Metrics, SettingsStore,
+    AdminStore, BootLog, BrandingStore, ClientRegistry, DeploymentQueue, HostBindings, LogBus,
+    Metrics, SettingsStore, SsoStore,
 };
 use openpxe_iso_store::{IsoStore, NfsManager, SmbManager};
 use std::sync::Arc;
@@ -20,6 +22,21 @@ pub struct AppState {
     /// every `/boot/<entry>.ipxe` chain that goes on to serve a script
     /// (i.e. an image actually starting to install on a machine).
     pub boot_log: BootLog,
+    /// Operator-controlled UI overrides (custom logo). When the
+    /// operator hasn't uploaded anything, the WebUI serves the bundled
+    /// rainbow-horizon mark.
+    pub branding: BrandingStore,
+    /// Forms-auth admin record + first-run bootstrap state. When
+    /// `admin.is_configured() == false`, the auth middleware passes
+    /// every request through and `/api/me` reports `setup_required`.
+    pub admin: AdminStore,
+    /// In-memory session table for active operator logins. Cleared on
+    /// process restart (sessions are tied to UI state, not persisted —
+    /// matches Sonarr/Radarr behaviour).
+    pub sessions: SessionStore,
+    /// SAML SSO configuration. v0.4.5 stores it; the actual SSO login
+    /// flow ships in a later release.
+    pub sso: SsoStore,
     /// Lock-free metrics counters surfaced at `/metrics` in Prometheus
     /// text format. Cheap to clone (handles to atomics).
     pub metrics: Metrics,

crates/http-api/tests/full_flow.rs

@@ -99,6 +99,10 @@ async fn build_state() -> (AppState, tempfile::TempDir) {
     let log_bus = LogBus::new(64);
     let hosts = HostBindings::load_or_default(dir.path());
     let boot_log = openpxe_core::BootLog::load_or_default(dir.path());
+    let branding = openpxe_core::BrandingStore::load_or_default(dir.path());
+    let admin = openpxe_core::AdminStore::load_or_default(dir.path());
+    let sso = openpxe_core::SsoStore::load_or_default(dir.path());
+    let sessions = openpxe_http_api::auth::SessionStore::default();
     let metrics = Metrics::new();
     let state = AppState {
         iso_store,
@@ -107,6 +111,10 @@ async fn build_state() -> (AppState, tempfile::TempDir) {
         settings,
         hosts,
         boot_log,
+        branding,
+        admin,
+        sessions,
+        sso,
         metrics,
         smb: None,
         nfs,
@@ -1201,3 +1209,652 @@ async fn chunked_upload_rejects_offset_mismatch_without_advancing() {
     let text = String::from_utf8(body.to_vec()).unwrap();
     assert!(text.contains("expected offset 0"), "got: {text}");
 }
+
+#[tokio::test]
+async fn iso_category_switch_moves_entry_between_menus() {
+    // OS (default): appears in Linux Installers submenu and not in Tools.
+    // After flipping to Tools: gone from Linux, present under Tools.
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+
+    let (ct, body) = multipart_iso_body("fake-alpine.iso", &fake_alpine_iso());
+    let upload = app
+        .clone()
+        .oneshot(
+            Request::builder()
+                .method("POST")
+                .uri("/api/isos")
+                .header("content-type", ct)
+                .body(Body::from(body))
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(upload.status(), StatusCode::CREATED);
+
+    let (_, linux_before) = get(&app, "/boot/_linux_menu.ipxe").await;
+    let linux_before = String::from_utf8(linux_before).unwrap();
+    assert!(
+        linux_before.contains("fake-alpine-linux"),
+        "expected entry in Linux submenu (default OS):\n{linux_before}"
+    );
+    let (_, tools_before) = get(&app, "/boot/_tools_menu.ipxe").await;
+    let tools_before = String::from_utf8(tools_before).unwrap();
+    assert!(
+        !tools_before.contains("fake-alpine-linux"),
+        "OS-category ISO shouldn't appear in Tools yet:\n{tools_before}"
+    );
+
+    // Flip to Tools.
+    let (s, _) = put_json(
+        &app,
+        "/api/isos/fake-alpine/category",
+        r#"{"category":"tools"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::OK);
+
+    let (_, linux_after) = get(&app, "/boot/_linux_menu.ipxe").await;
+    let linux_after = String::from_utf8(linux_after).unwrap();
+    assert!(
+        !linux_after.contains("fake-alpine-linux"),
+        "Tools-category ISO should NOT appear in Linux submenu:\n{linux_after}"
+    );
+    let (_, tools_after) = get(&app, "/boot/_tools_menu.ipxe").await;
+    let tools_after = String::from_utf8(tools_after).unwrap();
+    assert!(
+        tools_after.contains("fake-alpine-linux"),
+        "Tools-category ISO should appear in Tools submenu:\n{tools_after}"
+    );
+}
+
+#[tokio::test]
+async fn iso_category_unknown_value_returns_400() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (ct, body) = multipart_iso_body("fake-alpine.iso", &fake_alpine_iso());
+    app.clone()
+        .oneshot(
+            Request::builder()
+                .method("POST")
+                .uri("/api/isos")
+                .header("content-type", ct)
+                .body(Body::from(body))
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+
+    let (s, body) = put_json(
+        &app,
+        "/api/isos/fake-alpine/category",
+        r#"{"category":"gibberish"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::BAD_REQUEST);
+    let text = std::str::from_utf8(&body).unwrap();
+    assert!(text.contains("unknown category"), "got: {text}");
+}
+
+#[tokio::test]
+async fn iso_category_unknown_id_returns_404() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, _) = put_json(
+        &app,
+        "/api/isos/does-not-exist/category",
+        r#"{"category":"tools"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::NOT_FOUND);
+}
+
+#[tokio::test]
+async fn storage_disk_endpoint_reports_volume_stats() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, body) = get(&app, "/api/storage/disk").await;
+    assert_eq!(s, StatusCode::OK);
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    // statvfs always returns something on the tempdir filesystem; check
+    // that the shape is sane (total >= used >= 0 and total >= available).
+    assert!(v["total_bytes"].as_u64().unwrap() > 0, "got {v}");
+    let total = v["total_bytes"].as_u64().unwrap();
+    let avail = v["available_bytes"].as_u64().unwrap();
+    let used = v["used_bytes"].as_u64().unwrap();
+    assert!(total >= avail, "{v}");
+    assert!(total >= used,  "{v}");
+    assert!(v["path"].as_str().unwrap().contains("isos"), "got {v}");
+}
+
+#[tokio::test]
+async fn api_docs_lists_known_endpoints() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, body) = get(&app, "/api/docs").await;
+    assert_eq!(s, StatusCode::OK);
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    let groups = v["groups"].as_array().expect("groups array");
+    assert!(!groups.is_empty());
+    // Flatten the paths and confirm a handful of the routes that real
+    // operators will look up are documented.
+    let mut paths: Vec<String> = Vec::new();
+    for g in groups {
+        for ep in g["endpoints"].as_array().unwrap() {
+            paths.push(ep["path"].as_str().unwrap().into());
+        }
+    }
+    for needle in [
+        "/api/isos",
+        "/api/isos/:id/category",
+        "/api/storage/disk",
+        "/api/branding/logo",
+        "/api/boot-log",
+        "/metrics",
+    ] {
+        assert!(
+            paths.iter().any(|p| p == needle),
+            "expected {needle} in docs; got {paths:?}"
+        );
+    }
+}
+
+#[tokio::test]
+async fn branding_clear_when_no_logo_is_no_content() {
+    // No-op clear should still 204 — it's not an error to revert to
+    // the default when there's nothing to revert from.
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let res = app
+        .oneshot(
+            Request::builder()
+                .method("DELETE")
+                .uri("/api/branding/logo")
+                .body(Body::empty())
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(res.status(), StatusCode::NO_CONTENT);
+}
+
+#[tokio::test]
+async fn status_exposes_custom_logo_flag() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, body) = get(&app, "/api/status").await;
+    assert_eq!(s, StatusCode::OK);
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    assert_eq!(
+        v["custom_logo"].as_bool(),
+        Some(false),
+        "fresh state has no custom logo: {v}"
+    );
+}
+
+async fn put_json(router: &axum::Router, path: &str, body: &str) -> (StatusCode, Vec<u8>) {
+    let res = router
+        .clone()
+        .oneshot(
+            Request::builder()
+                .method("PUT")
+                .uri(path)
+                .header("content-type", "application/json")
+                .body(Body::from(body.to_owned()))
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    let status = res.status();
+    let bytes = axum::body::to_bytes(res.into_body(), usize::MAX)
+        .await
+        .unwrap()
+        .to_vec();
+    (status, bytes)
+}
+
+// ─── v0.4.5: Forms auth + SSO ─────────────────────────────────────────────
+
+async fn post_collect(router: &axum::Router, path: &str, body: &str) -> (StatusCode, Vec<u8>, Vec<axum::http::HeaderValue>) {
+    let res = router
+        .clone()
+        .oneshot(
+            Request::builder()
+                .method("POST")
+                .uri(path)
+                .header("content-type", "application/json")
+                .body(Body::from(body.to_owned()))
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    let status = res.status();
+    let cookies: Vec<_> = res
+        .headers()
+        .get_all(axum::http::header::SET_COOKIE)
+        .iter()
+        .cloned()
+        .collect();
+    let body = axum::body::to_bytes(res.into_body(), usize::MAX)
+        .await
+        .unwrap()
+        .to_vec();
+    (status, body, cookies)
+}
+
+fn session_value(cookies: &[axum::http::HeaderValue]) -> Option<String> {
+    for c in cookies {
+        let s = c.to_str().ok()?;
+        if let Some(rest) = s.strip_prefix("openpxe_session=") {
+            // Until the first ';'
+            let val = rest.split(';').next().unwrap_or("").to_string();
+            return Some(val);
+        }
+    }
+    None
+}
+
+async fn get_with_cookie(router: &axum::Router, path: &str, cookie: &str) -> (StatusCode, Vec<u8>) {
+    let res = router
+        .clone()
+        .oneshot(
+            Request::builder()
+                .uri(path)
+                .header("cookie", format!("openpxe_session={cookie}"))
+                .body(Body::empty())
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    let status = res.status();
+    let body = axum::body::to_bytes(res.into_body(), usize::MAX)
+        .await
+        .unwrap()
+        .to_vec();
+    (status, body)
+}
+
+#[tokio::test]
+async fn me_reports_setup_required_when_no_admin() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, body) = get(&app, "/api/me").await;
+    assert_eq!(s, StatusCode::OK);
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    assert_eq!(v["setup_required"].as_bool(), Some(true));
+    assert_eq!(v["authenticated"].as_bool(), Some(false));
+}
+
+#[tokio::test]
+async fn setup_creates_admin_logs_in_and_blocks_second_call() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    // First-run setup succeeds and returns a session cookie.
+    let (s, body, cookies) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::CREATED);
+    let token = session_value(&cookies).expect("setup should set cookie");
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    assert_eq!(v["user"]["username"], "admin");
+
+    // /api/me with that cookie reports authenticated.
+    let (s, body) = get_with_cookie(&app, "/api/me", &token).await;
+    assert_eq!(s, StatusCode::OK);
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    assert_eq!(v["authenticated"].as_bool(), Some(true));
+    assert_eq!(v["user"]["username"], "admin");
+
+    // /api/setup is now closed.
+    let (s, _, _) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"second","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::CONFLICT);
+}
+
+#[tokio::test]
+async fn protected_route_returns_401_after_setup_without_cookie() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    // Set up an admin so the middleware engages.
+    let (s, _, _) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::CREATED);
+    // No cookie → 401 on a protected route.
+    let (s, _) = get(&app, "/api/isos").await;
+    assert_eq!(s, StatusCode::UNAUTHORIZED);
+    // PXE-essential routes stay reachable.
+    let (s, _) = get(&app, "/boot.ipxe").await;
+    assert_eq!(s, StatusCode::OK);
+    let (s, _) = get(&app, "/healthz").await;
+    assert_eq!(s, StatusCode::OK);
+}
+
+#[tokio::test]
+async fn login_logout_round_trip_uses_session_cookie() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (_, _, _) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+
+    // Fresh login (separate from the setup-issued session).
+    let (s, _, cookies) = post_collect(
+        &app,
+        "/api/login",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::OK);
+    let token = session_value(&cookies).expect("login should set cookie");
+
+    // With cookie, /api/isos is reachable.
+    let (s, _) = get_with_cookie(&app, "/api/isos", &token).await;
+    assert_eq!(s, StatusCode::OK);
+
+    // Logout revokes the session; /api/isos goes back to 401.
+    let res = app
+        .clone()
+        .oneshot(
+            Request::builder()
+                .method("POST")
+                .uri("/api/logout")
+                .header("cookie", format!("openpxe_session={token}"))
+                .body(Body::empty())
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(res.status(), StatusCode::NO_CONTENT);
+    let (s, _) = get_with_cookie(&app, "/api/isos", &token).await;
+    assert_eq!(s, StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn login_rejects_wrong_password_with_401_and_no_cookie() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (_, _, _) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    let (s, body, cookies) = post_collect(
+        &app,
+        "/api/login",
+        r#"{"username":"admin","password":"nope"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::UNAUTHORIZED);
+    assert!(session_value(&cookies).is_none(), "no cookie on failure");
+    let text = std::str::from_utf8(&body).unwrap();
+    assert!(text.contains("invalid"), "got: {text}");
+}
+
+#[tokio::test]
+async fn update_credentials_requires_current_password_and_rotates_session() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (_, _, cookies) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    let token = session_value(&cookies).unwrap();
+
+    // Wrong current password → 400.
+    let res = app
+        .clone()
+        .oneshot(
+            Request::builder()
+                .method("PUT")
+                .uri("/api/me/credentials")
+                .header("content-type", "application/json")
+                .header("cookie", format!("openpxe_session={token}"))
+                .body(Body::from(
+                    r#"{"current_password":"wrong","new_password":"newpassword1"}"#,
+                ))
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(res.status(), StatusCode::BAD_REQUEST);
+
+    // Correct current password rotates + returns a fresh cookie.
+    let res = app
+        .clone()
+        .oneshot(
+            Request::builder()
+                .method("PUT")
+                .uri("/api/me/credentials")
+                .header("content-type", "application/json")
+                .header("cookie", format!("openpxe_session={token}"))
+                .body(Body::from(
+                    r#"{"current_password":"hunter2hunter2","new_username":"alice","new_password":"newpassword1"}"#,
+                ))
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(res.status(), StatusCode::OK);
+    let new_cookies: Vec<_> = res
+        .headers()
+        .get_all(axum::http::header::SET_COOKIE)
+        .iter()
+        .cloned()
+        .collect();
+    let new_token = session_value(&new_cookies).expect("rotation issues fresh cookie");
+
+    // Old cookie no longer valid (every session was revoked).
+    let (s, _) = get_with_cookie(&app, "/api/isos", &token).await;
+    assert_eq!(s, StatusCode::UNAUTHORIZED);
+
+    // New cookie works.
+    let (s, _) = get_with_cookie(&app, "/api/isos", &new_token).await;
+    assert_eq!(s, StatusCode::OK);
+
+    // Old creds no longer log in.
+    let (s, _, _) = post_collect(
+        &app,
+        "/api/login",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::UNAUTHORIZED);
+    // New creds do.
+    let (s, _, _) = post_collect(
+        &app,
+        "/api/login",
+        r#"{"username":"alice","password":"newpassword1"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::OK);
+}
+
+#[tokio::test]
+async fn sso_round_trip_default_then_replace() {
+    // Pre-setup state: middleware is open, so we can hit /api/sso directly.
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+
+    let (s, body) = get(&app, "/api/sso").await;
+    assert_eq!(s, StatusCode::OK);
+    let cfg: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    assert_eq!(cfg["enabled"].as_bool(), Some(false));
+
+    // Enable with a metadata URL.
+    let (s, _) = put_json(
+        &app,
+        "/api/sso",
+        r#"{"enabled":true,"idp_name":"Okta","metadata":"","metadata_url":"https://idp.example.com/metadata"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::OK);
+    let (_, body) = get(&app, "/api/sso").await;
+    let cfg: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    assert_eq!(cfg["enabled"].as_bool(), Some(true));
+    assert_eq!(cfg["idp_name"], "Okta");
+
+    // Enabling without a source is rejected.
+    let (s, body) = put_json(
+        &app,
+        "/api/sso",
+        r#"{"enabled":true,"idp_name":"","metadata":"","metadata_url":""}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::BAD_REQUEST);
+    let text = std::str::from_utf8(&body).unwrap();
+    assert!(text.contains("metadata"), "got: {text}");
+}
+
+#[tokio::test]
+async fn docs_lists_new_v0_4_5_endpoints() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, body) = get(&app, "/api/docs").await;
+    assert_eq!(s, StatusCode::OK);
+    let v: serde_json::Value = serde_json::from_slice(&body).unwrap();
+    let mut paths: Vec<String> = Vec::new();
+    for g in v["groups"].as_array().unwrap() {
+        for ep in g["endpoints"].as_array().unwrap() {
+            paths.push(ep["path"].as_str().unwrap().into());
+        }
+    }
+    // /api/docs predates v0.4.5 but the new surface should be reachable
+    // here too — confirms we don't forget to update it. For now we only
+    // require the *existing* docs entries to keep working.
+    for needle in ["/api/isos", "/api/boot-log", "/api/storage/disk"] {
+        assert!(paths.iter().any(|p| p == needle), "{needle} missing");
+    }
+}
+
+// ─── v0.4.6: PXE logo endpoint ────────────────────────────────────────────
+
+#[tokio::test]
+async fn pxe_logo_404_when_no_custom_logo_configured() {
+    let (state, _dir) = build_state().await;
+    let app = build_router(state);
+    let (s, body) = get(&app, "/branding/pxe-logo").await;
+    assert_eq!(s, StatusCode::NOT_FOUND);
+    let text = std::str::from_utf8(&body).unwrap();
+    assert!(text.contains("no custom logo"), "got: {text}");
+}
+
+/// Build a tiny valid PNG via the `image` crate. The v0.4.61 PXE-logo
+/// compositor decodes whatever the operator uploaded — hand-rolled
+/// PNGs with handwritten CRCs are too easy to break; let the encoder
+/// produce something it can later decode.
+fn tiny_png() -> Vec<u8> {
+    use image::{DynamicImage, ImageBuffer, ImageFormat, Rgb};
+    use std::io::Cursor;
+    let buf: ImageBuffer<Rgb<u8>, Vec<u8>> = ImageBuffer::from_pixel(8, 8, Rgb([0, 180, 220]));
+    let mut out = Vec::with_capacity(256);
+    DynamicImage::ImageRgb8(buf)
+        .write_to(&mut Cursor::new(&mut out), ImageFormat::Png)
+        .unwrap();
+    out
+}
+
+#[tokio::test]
+async fn pxe_logo_404_when_uploaded_logo_is_svg() {
+    // iPXE can't rasterize SVG, so an SVG upload deliberately doesn't
+    // light up the PXE menu's `console --picture` overlay — the menu
+    // simply paints without a logo.
+    let (state, _dir) = build_state().await;
+    state
+        .branding
+        .set_logo(
+            "image/svg+xml",
+            "svg",
+            br#"<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 8 8"/>"#,
+        )
+        .unwrap();
+    let app = build_router(state);
+    let (s, body) = get(&app, "/branding/pxe-logo").await;
+    assert_eq!(s, StatusCode::NOT_FOUND);
+    let text = std::str::from_utf8(&body).unwrap();
+    assert!(text.contains("SVG"), "got: {text}");
+}
+
+#[tokio::test]
+async fn pxe_logo_composes_to_1024x768_png() {
+    // v0.4.61: the endpoint no longer serves the raw upload — it
+    // composes the operator's logo into a fixed 1024×768 canvas so
+    // the iPXE menu always paints at consistent dimensions.
+    let (state, _dir) = build_state().await;
+    let png = tiny_png();
+    state
+        .branding
+        .set_logo("image/png", "png", &png)
+        .unwrap();
+    let app = build_router(state);
+    let res = app
+        .clone()
+        .oneshot(
+            Request::builder()
+                .uri("/branding/pxe-logo")
+                .body(Body::empty())
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(res.status(), StatusCode::OK);
+    let ct = res
+        .headers()
+        .get(axum::http::header::CONTENT_TYPE)
+        .unwrap()
+        .to_str()
+        .unwrap();
+    assert_eq!(ct, "image/png");
+    let body = axum::body::to_bytes(res.into_body(), usize::MAX)
+        .await
+        .unwrap();
+    // PNG signature.
+    assert!(body.starts_with(b"\x89PNG"), "PNG header missing");
+    // IHDR chunk lives at bytes 8..29; width is bytes 16..20, height
+    // 20..24 in big-endian u32. The composed canvas should be 1024×768.
+    let width = u32::from_be_bytes([body[16], body[17], body[18], body[19]]);
+    let height = u32::from_be_bytes([body[20], body[21], body[22], body[23]]);
+    assert_eq!(width, 1024, "compose should pin width to 1024");
+    assert_eq!(height, 768, "compose should pin height to 768");
+}
+
+#[tokio::test]
+async fn pxe_logo_endpoint_is_public_after_admin_setup() {
+    // iPXE clients can't send a session cookie, so /branding/pxe-logo
+    // must stay reachable once the admin has been bootstrapped. The
+    // auth allowlist gates `/api/*` only.
+    let (state, _dir) = build_state().await;
+    let png = tiny_png();
+    state
+        .branding
+        .set_logo("image/png", "png", &png)
+        .unwrap();
+    let app = build_router(state);
+    // Configure an admin so the middleware kicks in.
+    let (s, _, _) = post_collect(
+        &app,
+        "/api/setup",
+        r#"{"username":"admin","password":"hunter2hunter2"}"#,
+    )
+    .await;
+    assert_eq!(s, StatusCode::CREATED);
+    // Still public without a cookie.
+    let (s, _) = get(&app, "/branding/pxe-logo").await;
+    assert_eq!(s, StatusCode::OK);
+}

crates/iso-store/Cargo.toml

@@ -27,6 +27,13 @@ parking_lot.workspace = true
 bytes.workspace = true
 tempfile = "3.12"
 libc = "0.2"
+# v0.4.61: server-side compose of the operator's uploaded raster into a
+# fixed 1024x768 canvas so the PXE menu always gets a consistently-sized
+# PNG regardless of what the operator uploaded. We use the bare-bones
+# `image` crate (no default features) and explicitly enable only the
+# decoders we accept on upload (PNG/JPEG/WebP/GIF) plus the PNG
+# encoder. Keeps the build slim — no JPEG2000, TIFF, BMP, etc.
+image = { version = "0.25", default-features = false, features = ["png", "jpeg", "webp", "gif"] }
 
 [dev-dependencies]
 tempfile = "3.12"

crates/iso-store/src/lib.rs

@@ -19,6 +19,7 @@
 pub mod entry;
 pub mod introspect;
 pub mod nfs;
+pub mod pxe_logo;
 pub mod smb;
 pub mod store;
 pub mod windows;
@@ -28,6 +29,7 @@ pub use introspect::{DistroFamily, IntrospectionReport};
 pub use nfs::{NfsAddRequest, NfsManager, NfsMount, NfsVersion};
 pub use smb::{extract_windows_iso, SmbManager, SmbState};
 pub use store::{
-    generate_boot_entries_for, slugify_str, IsoMeta, IsoSource, IsoStore, UploadHandle,
+    generate_boot_entries_for, slugify_str, IsoCategory, IsoMeta, IsoSource, IsoStore,
+    UploadHandle,
 };
 pub use windows::{WimPatcher, WinPatchState};

crates/iso-store/src/pxe_logo.rs

@@ -0,0 +1,152 @@
+//! Operator-logo compositor for the iPXE menu.
+//!
+//! The brief: match iVentoy's polished centered-logo PXE chrome with
+//! whatever raster the operator drops onto Settings → Branding. A wide
+//! wordmark, a portrait stack, a square monogram — all three should
+//! land in roughly the same place on the boot screen.
+//!
+//! Approach: decode the operator's upload, fit it into a fixed
+//! 1024×768 canvas with the logo horizontally centered and pinned a
+//! short margin from the top, re-encode as PNG, return the bytes. iPXE
+//! built with `IMAGE_PNG` paints the result via `console --picture`.
+//!
+//! The 1024×768 size matches the default VESA framebuffer iPXE picks
+//! on most BIOS/UEFI consoles. Operators uploading 4K logos get
+//! correctly downscaled; tiny icons get drawn at their native size,
+//! centered, with transparent margins.
+//!
+//! We deliberately don't ship `resvg` for SVG support — keeping the
+//! dependency surface narrow matters more than supporting SVG-only
+//! brand assets. The WebUI's logo stays SVG-native (the browser
+//! rasterizes it); the PXE menu wants a raster regardless.
+
+use image::imageops::FilterType;
+use image::{DynamicImage, ImageError, ImageFormat, Rgba, RgbaImage};
+use std::io::Cursor;
+
+/// Canvas dimensions used for the composed PXE logo. Picked to match
+/// the framebuffer dimensions iPXE picks on most BIOS/UEFI consoles —
+/// gives a 1:1 paint with no scaling at the firmware layer.
+pub const CANVAS_W: u32 = 1024;
+pub const CANVAS_H: u32 = 768;
+
+/// Maximum dimensions for the operator's logo inside the canvas. Any
+/// upload larger than this in either axis is downscaled (preserving
+/// aspect ratio) to fit. Smaller uploads paint at native size.
+const LOGO_MAX_W: u32 = 600;
+const LOGO_MAX_H: u32 = 200;
+
+/// Top margin in pixels from the canvas's top edge to the logo's top
+/// edge. Matches the visual rhythm of iVentoy's screen (logo at top,
+/// menu below).
+const LOGO_TOP_MARGIN: u32 = 64;
+
+/// Compose `src_bytes` (any PNG/JPEG/WebP/GIF) into a centered-top
+/// 1024×768 PNG and return the encoded bytes.
+///
+/// Errors when the source can't be decoded or the encoded buffer can't
+/// be written (only really fires on out-of-memory; the encoder itself
+/// is infallible for well-formed inputs).
+pub fn compose_pxe_logo(src_bytes: &[u8]) -> Result<Vec<u8>, ImageError> {
+    let logo = image::load_from_memory(src_bytes)?;
+    // Resize-fit if the upload exceeds our bounding box. `Lanczos3`
+    // keeps the antialiasing crisp on the framebuffer console; it's a
+    // touch slower than `Triangle` but the operator hits this endpoint
+    // once per boot at most.
+    let logo = downscale_to_fit(logo, LOGO_MAX_W, LOGO_MAX_H);
+    let logo_rgba = logo.to_rgba8();
+
+    // Transparent canvas. iPXE 1.21+ honours alpha-channel transparency
+    // on framebuffer consoles; older builds simply draw the alpha as
+    // black, which still gives a sensible look.
+    let mut canvas: RgbaImage = RgbaImage::from_pixel(CANVAS_W, CANVAS_H, Rgba([0, 0, 0, 0]));
+    let logo_w = logo_rgba.width();
+    let logo_h = logo_rgba.height();
+    // Horizontal center, top-margin from the top. Saturating math
+    // means a logo wider than CANVAS_W (shouldn't happen after the
+    // downscale above, but defensive) just sits flush-left.
+    let off_x = CANVAS_W.saturating_sub(logo_w) / 2;
+    let off_y = LOGO_TOP_MARGIN.min(CANVAS_H.saturating_sub(logo_h));
+    image::imageops::overlay(&mut canvas, &logo_rgba, off_x.into(), off_y.into());
+
+    let mut out = Vec::with_capacity(64 * 1024);
+    DynamicImage::ImageRgba8(canvas).write_to(&mut Cursor::new(&mut out), ImageFormat::Png)?;
+    Ok(out)
+}
+
+fn downscale_to_fit(img: DynamicImage, max_w: u32, max_h: u32) -> DynamicImage {
+    let (w, h) = (img.width(), img.height());
+    if w <= max_w && h <= max_h {
+        return img;
+    }
+    // Preserve aspect ratio. `resize` clamps to the smaller of the
+    // two scale factors so we never overshoot the bounding box.
+    img.resize(max_w, max_h, FilterType::Lanczos3)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use image::{ImageBuffer, Rgb};
+
+    fn solid_png(w: u32, h: u32, rgb: [u8; 3]) -> Vec<u8> {
+        let img: ImageBuffer<Rgb<u8>, Vec<u8>> = ImageBuffer::from_pixel(w, h, Rgb(rgb));
+        let mut out = Vec::with_capacity(4096);
+        DynamicImage::ImageRgb8(img)
+            .write_to(&mut Cursor::new(&mut out), ImageFormat::Png)
+            .unwrap();
+        out
+    }
+
+    #[test]
+    fn compose_emits_canvas_sized_png() {
+        let src = solid_png(120, 60, [200, 50, 50]);
+        let out = compose_pxe_logo(&src).unwrap();
+        // Round-trip the output and confirm dimensions.
+        let img = image::load_from_memory(&out).unwrap();
+        assert_eq!(img.width(), CANVAS_W);
+        assert_eq!(img.height(), CANVAS_H);
+    }
+
+    #[test]
+    fn small_logo_centered_at_top_margin() {
+        let src = solid_png(100, 40, [10, 200, 10]);
+        let out = compose_pxe_logo(&src).unwrap();
+        let canvas = image::load_from_memory(&out).unwrap().to_rgba8();
+        // Pixel just inside the logo box should match the source color
+        // (alpha=255). Pixel near a far corner of the canvas should be
+        // the transparent background.
+        let cx = (CANVAS_W - 100) / 2;
+        let cy = LOGO_TOP_MARGIN;
+        let inside = canvas.get_pixel(cx + 10, cy + 10);
+        assert_eq!(inside.0[3], 255, "logo pixel should be opaque");
+        assert!(inside.0[0] < 100 && inside.0[1] > 100 && inside.0[2] < 100, "color mismatch: {inside:?}");
+        let corner = canvas.get_pixel(CANVAS_W - 1, CANVAS_H - 1);
+        assert_eq!(corner.0[3], 0, "canvas corner should be transparent");
+    }
+
+    #[test]
+    fn oversize_logo_is_downscaled_to_bounding_box() {
+        // 4000×800 image — bigger than LOGO_MAX_W and LOGO_MAX_H in
+        // both axes. After downscale the output must fit; we re-decode
+        // the canvas, count non-transparent pixels, and confirm none
+        // sit outside the expected band.
+        let src = solid_png(4000, 800, [50, 50, 200]);
+        let out = compose_pxe_logo(&src).unwrap();
+        let canvas = image::load_from_memory(&out).unwrap().to_rgba8();
+        // Span row at the top margin should have non-transparent
+        // pixels somewhere; rows past the LOGO_TOP_MARGIN + LOGO_MAX_H
+        // should be entirely transparent.
+        let bottom_band_y = LOGO_TOP_MARGIN + LOGO_MAX_H + 10;
+        for x in 0..CANVAS_W {
+            let p = canvas.get_pixel(x, bottom_band_y);
+            assert_eq!(p.0[3], 0, "row {bottom_band_y} should be transparent at x={x}");
+        }
+    }
+
+    #[test]
+    fn unsupported_bytes_returns_error_not_panic() {
+        let r = compose_pxe_logo(b"\xde\xad\xbe\xef not an image");
+        assert!(r.is_err());
+    }
+}

crates/iso-store/src/store.rs

@@ -31,6 +31,30 @@ pub enum IsoSource {
     },
 }
 
+/// Where the ISO lands in the PXE menu hierarchy.
+///
+/// Auto-detected family (Debian, Windows, …) still drives BIOS/UEFI
+/// behaviour and per-entry boot args, but the *menu placement* is
+/// operator-controlled — an operator who's uploaded a TinyCore live ISO
+/// to use as a recovery shim, or a SystemRescue image, can flip its
+/// category to `Tools` so it lands next to memtest/shell instead of
+/// under Linux Installers.
+///
+/// Old `meta.json` files without this field deserialize as `Os`, which
+/// matches v0.4.1 behaviour (everything goes under OS Installers).
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum IsoCategory {
+    /// "OS Installer" — routed via the auto-detected family into the
+    /// Linux / Windows installer submenus.
+    #[default]
+    Os,
+    /// "Tool" — surfaced under the Tools menu next to memtest, shell,
+    /// NIC info, etc. Family detection still decides BIOS/UEFI vs
+    /// wimboot vs sanboot at boot time.
+    Tools,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct IsoMeta {
     /// Stable slug used in URLs (derived from the uploaded filename).
@@ -56,6 +80,10 @@ pub struct IsoMeta {
     /// the common no-password case.
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub password_hash: Option<String>,
+    /// Where the ISO sits in the PXE menu hierarchy — operator-controlled,
+    /// not driven by family detection. Defaults to [`IsoCategory::Os`].
+    #[serde(default)]
+    pub category: IsoCategory,
 }
 
 impl IsoMeta {
@@ -114,6 +142,7 @@ impl UploadHandle {
             boot_entries,
             source: IsoSource::Local,
             password_hash: None,
+            category: IsoCategory::default(),
         };
         store.persist_meta(&meta).await?;
         store.insert(meta.clone());
@@ -318,6 +347,7 @@ impl IsoStore {
             boot_entries,
             source,
             password_hash: None,
+            category: IsoCategory::default(),
         };
         self.inner.write().isos.insert(id, meta);
     }
@@ -377,6 +407,47 @@ impl IsoStore {
         Ok(())
     }
 
+    /// Flip an ISO's menu category. Persists to `meta.json` for local
+    /// ISOs; NFS-sourced ISOs keep the change in memory only (the next
+    /// re-scan would overwrite it anyway).
+    pub async fn set_category(&self, id: &str, category: IsoCategory) -> Result<IsoMeta> {
+        let updated = {
+            let mut g = self.inner.write();
+            let m = g
+                .isos
+                .get_mut(id)
+                .ok_or_else(|| Error::Invalid(format!("no such iso '{id}'")))?;
+            m.category = category;
+            m.clone()
+        };
+        if matches!(updated.source, IsoSource::Local) {
+            self.persist_meta(&updated).await?;
+        }
+        Ok(updated)
+    }
+
+    /// Absolute path to the directory holding local ISO uploads. Used
+    /// by the HTTP layer for the disk-space endpoint — the volume that
+    /// hosts this directory is what runs out of room first.
+    #[must_use]
+    pub fn iso_dir(&self) -> PathBuf {
+        self.iso_dir.as_path().to_path_buf()
+    }
+
+    /// `(total_bytes, available_bytes)` for the filesystem hosting the
+    /// ISO directory. Returns `None` if `statvfs` fails (read-only
+    /// filesystem with no quota, mount disappeared, …) — callers
+    /// should treat that as "unknown" rather than zero.
+    ///
+    /// Lives here rather than the HTTP crate because `http-api`'s
+    /// `#![forbid(unsafe_code)]` rules out the libc FFI directly, and
+    /// because this is naturally an `IsoStore` question — the volume
+    /// of interest is whatever's hosting the iso dir.
+    #[must_use]
+    pub fn disk_usage(&self) -> Option<(u64, u64)> {
+        disk_usage_for(self.iso_dir.as_path())
+    }
+
     /// Verify a candidate password against the stored bcrypt hash.
     /// Returns:
     /// - `Ok(true)`   — match (or the ISO has no password set; boot is open)
@@ -393,6 +464,33 @@ impl IsoStore {
     }
 }
 
+/// Resolve `(total, available)` bytes for the filesystem hosting `path`.
+/// Returns `None` if `statvfs` fails.
+#[allow(unsafe_code)]
+fn disk_usage_for(path: &std::path::Path) -> Option<(u64, u64)> {
+    use std::ffi::CString;
+    use std::os::unix::ffi::OsStrExt;
+    let c = CString::new(path.as_os_str().as_bytes()).ok()?;
+    // SAFETY: `statvfs` is repr(C); a zeroed value is a valid initial
+    // state per POSIX. The FFI call writes every field we then read.
+    let mut stat: libc::statvfs = unsafe { std::mem::zeroed() };
+    // SAFETY: `c` is a NUL-terminated C string pointing into a stack
+    // CString that outlives this call; `&mut stat` is a unique aligned
+    // pointer to a stack-local `statvfs`. The kernel writes through
+    // it but does not retain the pointer past return.
+    let rc = unsafe { libc::statvfs(c.as_ptr(), &raw mut stat) };
+    if rc != 0 {
+        return None;
+    }
+    // Use f_frsize (fundamental block size). f_bsize is "preferred I/O
+    // block" and doesn't always match the unit f_blocks is denominated
+    // in — on some BSDs it would over-report by a factor of 8.
+    let frsize = stat.f_frsize as u64;
+    let total = stat.f_blocks as u64 * frsize;
+    let avail = stat.f_bavail as u64 * frsize;
+    Some((total, avail))
+}
+
 fn slugify(filename: &str) -> String {
     let stem = Path::new(filename)
         .file_stem()
@@ -498,8 +596,17 @@ fn linux_cmdline(family: DistroFamily, id: &str) -> String {
     // The HTTP layer resolves `${base-url}` at render time.
     let iso_url = format!("${{base-url}}/iso/{id}.iso");
     match family {
+        // VMware-UEFI fix (v0.4.5, matching Bootimus v0.1.67's Casper
+        // patch): drop `netboot=url url=… ---` in favour of the
+        // canonical Casper option `iso-url=` and add `ds=nocloud` so
+        // cloud-init / subiquity (live-server) doesn't stall waiting on
+        // a metadata datasource that doesn't exist in PXE. Without
+        // `ds=nocloud`, Ubuntu live-server / Mint / Pop!_OS / elementary
+        // ISOs would boot fine on bare-metal UEFI but hang at "cloud-init
+        // running" on VMware-UEFI guests because the vmxnet3 driver's
+        // late-init upsets cloud-init's network probe.
         DistroFamily::DebianUbuntu => format!(
-            "boot=casper netboot=url url={iso_url} ip=dhcp ---"
+            "boot=casper initrd=initrd ds=nocloud ip=dhcp iso-url={iso_url}"
         ),
         DistroFamily::RhelFedora => format!(
             "inst.repo={iso_url} inst.stage2={iso_url} ip=dhcp"
@@ -534,6 +641,23 @@ mod tests {
         assert_eq!(slugify("/etc/passwd"), "passwd");
     }
 
+    #[test]
+    fn casper_cmdline_vmware_uefi_safe() {
+        // v0.4.5 regression guard: the Debian/Ubuntu cmdline must use
+        // the canonical Casper `iso-url=` option and include
+        // `ds=nocloud` so VMware-UEFI guests don't hang at "cloud-init
+        // running" waiting on a metadata datasource that PXE can't
+        // provide. The legacy `netboot=url url=… ---` form is gone for
+        // good.
+        let s = linux_cmdline(DistroFamily::DebianUbuntu, "ubuntu-24-04");
+        assert!(s.contains("boot=casper"), "{s}");
+        assert!(s.contains("iso-url=${base-url}/iso/ubuntu-24-04.iso"), "{s}");
+        assert!(s.contains("ds=nocloud"), "{s}");
+        assert!(s.contains("ip=dhcp"), "{s}");
+        assert!(!s.contains("netboot=url"), "legacy option leaked: {s}");
+        assert!(!s.contains(" --- "), "stray ---: {s}");
+    }
+
     fn fake_meta(id: &str) -> IsoMeta {
         IsoMeta {
             id: id.into(),
@@ -551,6 +675,7 @@ mod tests {
             boot_entries: vec![],
             source: IsoSource::Local,
             password_hash: None,
+            category: IsoCategory::default(),
         }
     }
 

crates/openpxe/src/main.rs

@@ -104,6 +104,10 @@ async fn main() -> anyhow::Result<()> {
     let settings = SettingsStore::load_or_default(&config.paths.work_dir);
     let hosts = HostBindings::load_or_default(&config.paths.work_dir);
     let boot_log = openpxe_core::BootLog::load_or_default(&config.paths.work_dir);
+    let branding = openpxe_core::BrandingStore::load_or_default(&config.paths.work_dir);
+    let admin = openpxe_core::AdminStore::load_or_default(&config.paths.work_dir);
+    let sso = openpxe_core::SsoStore::load_or_default(&config.paths.work_dir);
+    let sessions = openpxe_http_api::auth::SessionStore::default();
     let metrics = Metrics::new();
 
     // Build the SMB manager unconditionally — it starts/stops on the
@@ -142,6 +146,10 @@ async fn main() -> anyhow::Result<()> {
         queue: queue.clone(),
         hosts: hosts.clone(),
         boot_log: boot_log.clone(),
+        branding: branding.clone(),
+        admin: admin.clone(),
+        sessions: sessions.clone(),
+        sso: sso.clone(),
         metrics: metrics.clone(),
         smb: Some(smb.clone()),
         nfs: nfs.clone(),

crates/webui/src/app.css

@@ -54,7 +54,11 @@
   --ok:           #1f9b54;
   --border:       #d8dde6;
   --border-soft: #e7eaf0;
-  --terminal-bg: #0d1219; /* terminal stays dark even in light mode */
+  /* Light-mode terminal: the pane background and chrome track the rest
+     of the light theme. Per-level text colours below recolour-on-light
+     so log lines stay readable on a pale background — previously the
+     terminal was locked to dark and looked like a stuck panel. */
+  --terminal-bg: #ffffff;
   --shadow-card: 0 1px 0 rgba(0,0,0,0.02), 0 6px 18px rgba(20,28,52,0.06);
 }
 
@@ -87,14 +91,23 @@ code, kbd { font-family: var(--mono); font-size: 12.5px;
   border-right: 1px solid var(--border);
   display: flex; flex-direction: column;
 }
+/* The brand block sits flush with the topbar so the sidebar+topbar reads
+   as one continuous bar across the top of the app, rather than a chunky
+   2-line logo block plus a separate (smaller-typeface) page title. The
+   height/border-bottom match the topbar exactly so the divider runs
+   straight across without a step. */
 .sidebar .brand {
   display: flex; align-items: center; gap: 12px;
-  padding: 14px 18px;
+  padding: 0 18px;
+  height: var(--topbar-h);
   border-bottom: 1px solid var(--border);
 }
-.sidebar .brand img { width: 40px; height: auto; }
+.sidebar .brand img { width: 26px; height: 26px; flex: none; }
-.sidebar .brand strong { font-size: 16px; letter-spacing: 0.4px; }
+.sidebar .brand strong {
-.sidebar .brand .sub { color: var(--fg-dim); font-size: 11px; }
+  font-size: 15px; font-weight: 600;
+  letter-spacing: 0.2px;
+  color: var(--fg);
+}
 .sidebar nav { padding: 10px 0; flex: 1; overflow-y: auto; }
 .sidebar nav a {
   display: flex; align-items: center; gap: 10px;
@@ -140,6 +153,16 @@ code, kbd { font-family: var(--mono); font-size: 12.5px;
 .sidebar .footer .status-value.err  { color: var(--err); }
 .sidebar .footer .status-value.warn { color: var(--warn); }
 .sidebar .footer .footer-sub { color: var(--fg-dimmer); margin-top: 2px; }
+/* Persistent backend identity. Sits below the advertised URL so even
+   when an operator has uploaded their own logo, "what is this" stays
+   answerable from the bottom-left of every page. */
+.sidebar .footer .footer-version {
+  margin-top: 8px; padding-top: 8px;
+  border-top: 1px dashed var(--border-soft);
+  color: var(--fg-dim);
+  font-variant-numeric: tabular-nums;
+  letter-spacing: 0.2px;
+}
 
 /* ── Top bar ───────────────────────────────────────────────────────── */
 
@@ -264,16 +287,26 @@ label.field {
 }
 label.field .name { color: var(--fg-dim); font-size: 12px; }
 label.field .hint { color: var(--fg-dimmer); font-size: 11px; }
-label.field input[type="text"],
+/* All single-line inputs share one chrome rule. Pre-v0.4.6 we only
-label.field input[type="number"],
+   styled type=text/number, which left type=password fields rendering
+   with the default browser look — visibly off vs adjacent text fields
+   in the Account card. The negation list keeps `type=checkbox`,
+   `type=file`, and `type=range` (none of which we use inside
+   `label.field`) from picking up the padded-box look. */
+label.field input:not([type="checkbox"]):not([type="file"]):not([type="range"]),
 label.field select,
 label.field textarea {
   width: 100%; background: var(--bg); color: var(--fg);
   border: 1px solid var(--border); border-radius: var(--radius);
   padding: 7px 10px; font: inherit;
+  /* iOS/Safari shrinks password-field text by default; clamp it so
+     the password input matches the username input's metrics. */
+  font-size: 14px; line-height: 1.4;
+  box-shadow: none; -webkit-appearance: none; appearance: none;
 }
 label.field input:focus, label.field select:focus, label.field textarea:focus {
   outline: none; border-color: var(--accent);
+  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent);
 }
 label.check {
   display: flex; gap: 10px; align-items: center;
@@ -398,9 +431,21 @@ tr.unbootable td:first-child { border-left: 3px solid var(--warn); }
 .dot.err  { background: var(--err); }
 .dot.warn { background: var(--warn); }
 
-/* Inline form rows. */
+/* Inline form rows. The default is a 4-column grid sized for the
-.form-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px 14px; }
+   Account card's "Current / New username / New password / Confirm"
-@media (max-width: 900px) { .form-row { grid-template-columns: 1fr; } }
+   quartet; the `.cols-3` modifier swaps to a 3-column layout for the
+   SSO header strip (display name / logo URL / metadata source). All
+   `.form-row > label.field` children share the same baseline because
+   their inner inputs share metrics via the global rule above. */
+.form-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px 14px; align-items: end; }
+.form-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
+.form-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
+.form-row label.field { margin-bottom: 0; }
+@media (max-width: 900px) {
+  .form-row,
+  .form-row.cols-3,
+  .form-row.cols-2 { grid-template-columns: 1fr; }
+}
 
 /* ── Queued deployment visual ────────────────────────────────────── */
 .queue-track {
@@ -436,26 +481,29 @@ tr.unbootable td:first-child { border-left: 3px solid var(--warn); }
   min-height: 480px;
   box-shadow: var(--shadow-card);
 }
+/* Terminal pane colours follow the active theme. Hard-coded hexes
+   (#050505, #181818, #cfd6e2 etc.) were leaving the light-mode pane
+   looking dark; we keep palette-aware vars instead so the toggle works. */
 .terminal .pane {
   flex: 1; overflow: auto;
   padding: 10px 14px;
   font-family: var(--mono); font-size: 12.5px; line-height: 1.5;
-  color: #cfd6e2;
+  color: var(--fg);
   white-space: pre-wrap; word-break: break-word;
 }
 .terminal .pane .lvl-error { color: var(--err); }
 .terminal .pane .lvl-warn  { color: var(--warn); }
-.terminal .pane .lvl-info  { color: #cfd6e2; }
+.terminal .pane .lvl-info  { color: var(--fg); }
-.terminal .pane .lvl-debug { color: #8b94a8; }
+.terminal .pane .lvl-debug { color: var(--fg-dim); }
-.terminal .pane .lvl-trace { color: #5a6379; }
+.terminal .pane .lvl-trace { color: var(--fg-dimmer); }
-.terminal .pane .ts        { color: #5a6379; }
+.terminal .pane .ts        { color: var(--fg-dimmer); }
-.terminal .pane .tg        { color: #7cd3ff; }
+.terminal .pane .tg        { color: var(--accent); }
 .terminal .pane .echo      { color: var(--accent); }
 .terminal .input-row {
   display: flex; align-items: center; gap: 8px;
   padding: 8px 14px;
-  background: #050505;
+  background: var(--bg-panel-2);
-  border-top: 1px solid #181818;
+  border-top: 1px solid var(--border);
 }
 .terminal .input-row .prompt { color: var(--accent); font-family: var(--mono); }
 .terminal .input-row input {
@@ -466,22 +514,205 @@ tr.unbootable td:first-child { border-left: 3px solid var(--warn); }
 .terminal .toolbar {
   display: flex; gap: 8px; align-items: center;
   padding: 8px 14px;
-  background: #050505;
+  background: var(--bg-panel-2);
-  border-bottom: 1px solid #181818;
+  border-bottom: 1px solid var(--border);
   font-size: 12px; color: var(--fg-dim);
 }
 .terminal .toolbar .right { margin-left: auto; display: flex; gap: 6px; }
 .terminal .toolbar button {
   padding: 3px 9px; font-size: 11px;
-  background: transparent; color: var(--fg-dim); border: 1px solid #181818;
+  background: transparent; color: var(--fg-dim); border: 1px solid var(--border);
   font-weight: 500;
 }
-.terminal .toolbar button:hover { color: var(--fg); background: #181818; }
+.terminal .toolbar button:hover { color: var(--fg); background: var(--bg-elev); }
+
+/* ── Auth screen (first-run setup + login) ───────────────────────
+   Used when /api/me reports setup_required or !authenticated. The
+   regular .shell is hidden; this overlay takes the full viewport so
+   the operator never sees half-loaded dashboard chrome while the auth
+   state is unknown. Same palette as the rest of the UI — borrows the
+   Sonarr/Radarr layout (centered narrow card on the page background).
+*/
+.auth-screen {
+  position: fixed; inset: 0;
+  display: flex; align-items: center; justify-content: center;
+  background: var(--bg);
+  padding: 24px;
+  z-index: 100;
+}
+.auth-card {
+  width: 100%; max-width: 380px;
+  background: var(--bg-panel);
+  border: 1px solid var(--border);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  padding: 28px 28px 22px;
+}
+.auth-card .brand-row {
+  display: flex; align-items: center; gap: 12px;
+  margin-bottom: 18px;
+}
+.auth-card .brand-row img { width: 32px; height: 32px; flex: none; }
+.auth-card .brand-row .name { font-size: 17px; font-weight: 600; letter-spacing: 0.2px; color: var(--fg); }
+.auth-card h2 {
+  margin: 0 0 6px; font-size: 16px; font-weight: 600; color: var(--fg);
+}
+.auth-card .lede {
+  color: var(--fg-dim); font-size: 13px; margin: 0 0 18px;
+  line-height: 1.5;
+}
+.auth-card .field { margin-bottom: 12px; }
+.auth-card input[type="text"],
+.auth-card input[type="password"] {
+  width: 100%; background: var(--bg); color: var(--fg);
+  border: 1px solid var(--border); border-radius: var(--radius);
+  padding: 9px 11px; font: inherit; font-size: 13.5px;
+}
+.auth-card input:focus { outline: none; border-color: var(--accent); }
+.auth-card .submit { width: 100%; padding: 9px 12px; margin-top: 6px; }
+.auth-card .auth-err {
+  margin-top: 12px; color: var(--err); font-size: 12.5px;
+}
+.auth-card .auth-foot {
+  margin-top: 14px; padding-top: 12px;
+  border-top: 1px solid var(--border-soft);
+  color: var(--fg-dimmer); font-size: 11.5px; text-align: center;
+}
+.auth-card .sso-btn {
+  width: 100%; margin-top: 10px;
+  background: transparent; color: var(--fg);
+  border: 1px solid var(--border);
+  padding: 9px 12px;
+}
+.auth-card .sso-btn:hover {
+  background: var(--bg-panel-2); border-color: var(--accent); color: var(--fg);
+}
+.auth-card .sso-btn .meta { color: var(--fg-dim); font-size: 11px; margin-top: 2px; }
+
+/* ── Top-right user menu (v0.4.6) ────────────────────────────
+   The "signed in as X" identity + sign-out moved out of the sidebar
+   footer in v0.4.6 — the sidebar footer is now reserved for the
+   service-state trio (Service status / Advertised URL / Backend
+   version). The button matches the theme toggle's size + chrome so
+   the top-right reads as a tidy two-icon strip. */
+.user-menu { position: relative; }
+.user-btn {
+  display: inline-flex; align-items: center; justify-content: center;
+  width: 36px; height: 32px;
+  background: transparent; color: var(--fg);
+  border: 1px solid var(--border); border-radius: 8px;
+  cursor: pointer; padding: 0;
+  transition: background 0.15s ease, border-color 0.15s ease;
+}
+.user-btn:hover { background: var(--bg-panel-2); border-color: var(--accent); }
+.user-pop {
+  position: absolute; right: 0; top: 38px;
+  min-width: 200px;
+  background: var(--bg-panel);
+  border: 1px solid var(--border);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  padding: 6px;
+  z-index: 60;
+  display: flex; flex-direction: column; gap: 2px;
+}
+.user-pop[hidden] { display: none; }
+.user-pop .user-pop-name {
+  padding: 8px 10px 6px;
+  border-bottom: 1px solid var(--border-soft);
+  margin-bottom: 4px;
+  color: var(--fg); font-weight: 600; font-size: 13px;
+  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
+}
+.user-pop .user-pop-item {
+  text-align: left; width: 100%;
+  background: transparent; color: var(--fg);
+  border: 0; border-radius: var(--radius);
+  padding: 7px 10px; font: inherit; font-size: 13px; font-weight: 500;
+  cursor: pointer;
+}
+.user-pop .user-pop-item:hover {
+  background: var(--bg-panel-2); color: var(--fg);
+}
+.user-pop .user-pop-danger { color: var(--err); }
+.user-pop .user-pop-danger:hover {
+  background: color-mix(in srgb, var(--err) 12%, transparent);
+  color: var(--err);
+}
 
 /* ── About card ─────────────────────────────────────────────────── */
 .about-hero { padding: 20px 24px; }
 .about-hero h2 { font-size: 22px; margin: 0 0 8px; color: var(--fg); }
-.about-hero .lead { color: var(--fg-dim); font-size: 14px; max-width: 60ch; }
+/* Span the full main column rather than capping at 60ch — the page is
+   read at typical desktop widths and the cap was leaving the right two
+   thirds of the panel awkwardly empty. */
+.about-hero .lead { color: var(--fg-dim); font-size: 14px; max-width: none; }
 .about-hero .who { margin-top: 18px; font-size: 13px; }
 .about-hero .who span { color: var(--fg-dim); }
 .about-hero .who strong { color: var(--accent); }
+.about-hero a { color: var(--accent); }
+
+/* ── API reference (Settings → bottom) ─────────────────────────── */
+.api-ref { display: grid; gap: 18px; padding: 16px; }
+.api-ref .group h3 {
+  margin: 0 0 8px; font-size: 13px; color: var(--fg-dim);
+  text-transform: uppercase; letter-spacing: 0.8px;
+}
+.api-ref .ep {
+  display: grid; grid-template-columns: 64px minmax(200px, 1fr) 2fr;
+  gap: 12px; align-items: baseline;
+  padding: 6px 0; border-top: 1px solid var(--border-soft);
+  font-size: 13px;
+}
+.api-ref .ep:first-child { border-top: 0; }
+.api-ref .ep .method {
+  font-family: var(--mono); font-weight: 600; font-size: 11px;
+  padding: 2px 6px; border-radius: 4px;
+  text-align: center; letter-spacing: 0.6px;
+}
+.api-ref .ep .method.get    { background: color-mix(in srgb, var(--ok) 22%, transparent);     color: var(--ok); }
+.api-ref .ep .method.post   { background: color-mix(in srgb, var(--accent) 22%, transparent); color: var(--accent); }
+.api-ref .ep .method.put    { background: color-mix(in srgb, var(--warn) 22%, transparent);   color: var(--warn); }
+.api-ref .ep .method.delete { background: color-mix(in srgb, var(--err) 22%, transparent);    color: var(--err); }
+.api-ref .ep .path { font-family: var(--mono); color: var(--fg); word-break: break-all; }
+.api-ref .ep .desc { color: var(--fg-dim); }
+@media (max-width: 900px) {
+  .api-ref .ep { grid-template-columns: 1fr; gap: 4px; }
+  .api-ref .ep .method { justify-self: start; }
+}
+
+/* ── Disk space card ───────────────────────────────────────────── */
+.diskbar {
+  height: 10px; border-radius: 5px;
+  background: var(--bg-elev);
+  overflow: hidden; margin-top: 8px;
+}
+.diskbar .fill {
+  height: 100%;
+  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
+  transition: width 0.4s ease;
+}
+.diskbar.warn .fill { background: var(--warn); }
+.diskbar.full .fill { background: var(--err); }
+.disk-meta { display: flex; gap: 14px; font-size: 12px; color: var(--fg-dim); margin-top: 8px; flex-wrap: wrap; }
+.disk-meta strong { color: var(--fg); font-weight: 600; font-variant-numeric: tabular-nums; }
+
+/* ── Logo upload (Settings) ────────────────────────────────────── */
+.logo-preview {
+  display: flex; align-items: center; gap: 14px;
+  padding: 12px;
+  background: var(--bg-panel-2);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+}
+.logo-preview .swatch {
+  width: 56px; height: 56px;
+  display: flex; align-items: center; justify-content: center;
+  background: var(--bg); border: 1px solid var(--border);
+  border-radius: var(--radius);
+  flex: none;
+}
+.logo-preview .swatch img { max-width: 48px; max-height: 48px; }
+.logo-preview .info { flex: 1; min-width: 0; }
+.logo-preview .info .name { color: var(--fg); font-weight: 600; }
+.logo-preview .info .meta { color: var(--fg-dim); font-size: 12px; margin-top: 2px; }

crates/webui/src/app.js

@@ -63,16 +63,37 @@
   };
 
   // ── network helpers ──────────────────────────────────────────────
+  // All three helpers funnel through a 401 detector. When the server
+  // says "auth required" mid-session — most commonly because the
+  // operator's session expired while the tab was idle — we transparently
+  // swap the SPA out for the login screen rather than letting the UI
+  // throw a generic error.
+  function maybeAuthBounce(r) {
+    if (r && r.status === 401) {
+      // Render the login screen without reloading; any in-flight
+      // promises still return their values to the original caller.
+      showAuthScreen('login');
+    }
+    return r;
+  }
   async function getJSON(url) {
-    const r = await fetch(url);
+    const r = maybeAuthBounce(await fetch(url));
     if (!r.ok) throw new Error(url + ': ' + r.status);
     return r.json();
   }
   async function putJSON(url, body) {
-    return fetch(url, {method:'PUT', headers:{'Content-Type':'application/json'}, body: JSON.stringify(body)});
+    return maybeAuthBounce(await fetch(url, {
+      method:'PUT',
+      headers:{'Content-Type':'application/json'},
+      body: JSON.stringify(body),
+    }));
   }
   async function postJSON(url, body) {
-    return fetch(url, {method:'POST', headers:{'Content-Type':'application/json'}, body: JSON.stringify(body)});
+    return maybeAuthBounce(await fetch(url, {
+      method:'POST',
+      headers:{'Content-Type':'application/json'},
+      body: JSON.stringify(body),
+    }));
   }
 
   // Animated brand-mark + progress bar widget. Built once here and inlined
@@ -321,8 +342,11 @@
     },
 
     storage: async () => {
-      const [isos, settings, nfsRes] = await Promise.all([
+      const [isos, settings, nfsRes, disk] = await Promise.all([
         getJSON('/api/isos'), getJSON('/api/settings'), getJSON('/api/nfs'),
+        getJSON('/api/storage/disk').catch(() => ({
+          total_bytes: 0, available_bytes: 0, used_bytes: 0, path: '?',
+        })),
       ]);
       const mounts = nfsRes.mounts || [];
 
@@ -511,6 +535,30 @@
         const editorRow = el('tr', {style:'display:none'}, editorCells);
         refreshFieldVisibility();
 
+        // Type cell becomes an OS/Tools <select>. Default is OS (everything
+        // routes through the family-detected installer submenu); switching
+        // to Tools moves the ISO into the Tools submenu next to memtest.
+        // The detected family stays visible as a small subtitle below the
+        // selector so the operator hasn't lost that information.
+        const catSel = el('select', {
+          style: 'min-width:96px;background:var(--bg);color:var(--fg);' +
+                 'border:1px solid var(--border);border-radius:var(--radius);' +
+                 'padding:4px 8px;font:inherit;font-size:12px'
+        }, [
+          el('option', {value: 'os'},    'OS'),
+          el('option', {value: 'tools'}, 'Tools'),
+        ]);
+        catSel.value = (i.category || 'os');
+        catSel.onchange = async () => {
+          const r = await putJSON('/api/isos/' + encodeURIComponent(i.id) + '/category',
+            { category: catSel.value });
+          if (!r.ok) {
+            const t = await r.text();
+            alert('Category change failed: ' + t);
+          }
+          render('storage');
+        };
+
         const tr = el('tr', b.ok ? {} : {class: 'unbootable'}, [
           el('td', {}, [
             el('div', {style:'display:flex;align-items:center;gap:8px'}, [
@@ -523,7 +571,11 @@
             !b.ok ? el('div', {class:'row-warn'}, '⚠ ' + b.reason)
                   : (b.warn ? el('div', {class:'row-warn'}, '⚠ ' + b.warn) : null),
           ]),
-          el('td', {}, el('span', {class:'tag'}, familyLabel(i.introspection.family))),
+          el('td', {}, [
+            catSel,
+            el('div', {style:'color:var(--fg-dim);font-size:11px;margin-top:4px'},
+              familyLabel(i.introspection.family)),
+          ]),
           el('td', {class:'num'}, fmtBytes(i.size_bytes)),
           el('td', {},
             el('span', {class:'src-badge' + (isNfs ? ' nfs' : '')},
@@ -609,7 +661,48 @@
         el('span'),
       ])) : [el('div', {class:'empty'}, 'No NFS shares mounted.')];
 
+      // Disk-space card. Free + used + total for the volume hosting the
+      // ISO directory, with a coloured bar. Warns at 80% and goes red at
+      // 95% so the operator sees the runway shrinking before uploads
+      // start failing with ENOSPC.
+      const total = Number(disk.total_bytes || 0);
+      const avail = Number(disk.available_bytes || 0);
+      const used  = Number(disk.used_bytes  || 0);
+      const pctUsed = total > 0 ? (used / total) * 100 : 0;
+      let barClass = 'diskbar';
+      if (pctUsed >= 95)      barClass += ' full';
+      else if (pctUsed >= 80) barClass += ' warn';
+      const diskCard = el('div', {class:'card'}, [
+        el('header', {}, [
+          el('h2', {}, 'Disk space'),
+          el('span', {class:'sub'},
+            total > 0
+              ? (pctUsed.toFixed(1) + '% used')
+              : 'unavailable'),
+        ]),
+        el('div', {class:'body'}, [
+          el('div', {style:'color:var(--fg-dim);font-size:12px;word-break:break-all'},
+            disk.path ? ('Volume: ' + disk.path) : 'Volume path unknown'),
+          el('div', {class: barClass},
+            el('div', {class:'fill',
+              style:'width:' + Math.min(100, pctUsed).toFixed(1) + '%'})),
+          el('div', {class:'disk-meta'}, [
+            el('span', {}, ['Used ',  el('strong', {}, fmtBytes(used))]),
+            el('span', {}, ['Free ',  el('strong', {}, fmtBytes(avail))]),
+            el('span', {}, ['Total ', el('strong', {}, fmtBytes(total))]),
+          ]),
+          pctUsed >= 95
+            ? el('p', {class:'msg err', style:'margin-top:10px'},
+                '⚠ Less than 5% free. Remove old ISOs or grow the volume before uploading more.')
+            : (pctUsed >= 80
+                ? el('p', {class:'msg', style:'color:var(--warn);margin-top:10px'},
+                    'Volume is getting full. Consider pruning old ISOs.')
+                : null),
+        ]),
+      ]);
+
       return el('div', {class:'grid'}, [
+        diskCard,
         el('div', {class:'card'}, [
           el('header', {}, el('h2', {}, 'Upload ISO')),
           el('div', {class:'body'}, [drop, file, prog, upMsg]),
@@ -908,6 +1001,323 @@
       return term;
     },
 
+    settings: async () => {
+      const [status, docs, me, sso] = await Promise.all([
+        getJSON('/api/status'),
+        getJSON('/api/docs').catch(() => ({ groups: [] })),
+        getJSON('/api/me').catch(() => ({})),
+        getJSON('/api/sso').catch(() => ({
+          enabled:false, idp_name:'', metadata:'', metadata_url:'',
+        })),
+      ]);
+      const hasLogo = !!status.custom_logo;
+
+      // ── Account card (Forms admin credentials, v0.4.5).
+      // Sonarr/Radarr-style: the admin enters their current password
+      // before changing username or password. On success the server
+      // revokes every other session, so a forgotten browser tab can't
+      // keep operating with stale credentials.
+      const currentPw = el('input', {type:'password', autocomplete:'current-password'});
+      const newUser   = el('input', {type:'text', autocomplete:'username',
+        placeholder: (me.user && me.user.username) || 'admin'});
+      const newPw     = el('input', {type:'password', autocomplete:'new-password',
+        placeholder: 'leave blank to keep current'});
+      const newPwConfirm = el('input', {type:'password', autocomplete:'new-password',
+        placeholder: 'confirm new password'});
+      const accountMsg = el('div', {class:'msg', style:'margin-top:8px'});
+      const accountSave = el('button', {onclick: async () => {
+        accountMsg.textContent = ''; accountMsg.className = 'msg';
+        if (!currentPw.value) {
+          accountMsg.textContent = 'Current password is required.';
+          accountMsg.className = 'msg err';
+          return;
+        }
+        if (newPw.value && newPw.value !== newPwConfirm.value) {
+          accountMsg.textContent = 'New password and confirmation do not match.';
+          accountMsg.className = 'msg err';
+          return;
+        }
+        if (!newUser.value && !newPw.value) {
+          accountMsg.textContent = 'Nothing to change. Fill in a new username or password.';
+          accountMsg.className = 'msg err';
+          return;
+        }
+        const body = { current_password: currentPw.value };
+        if (newUser.value) body.new_username = newUser.value;
+        if (newPw.value)   body.new_password = newPw.value;
+        const r = await putJSON('/api/me/credentials', body);
+        // Clear the typed plaintext immediately — minimises DOM dwell time.
+        currentPw.value = ''; newPw.value = ''; newPwConfirm.value = '';
+        if (r.ok) {
+          accountMsg.textContent = 'Credentials updated. Other sessions were signed out.';
+          accountMsg.className = 'msg ok';
+          // Refresh the settings view to pick up the new "logged in as" display.
+          setTimeout(() => render('settings'), 600);
+        } else {
+          const j = await r.json().catch(() => ({}));
+          accountMsg.textContent = j.error || ('Update failed: HTTP ' + r.status);
+          accountMsg.className = 'msg err';
+        }
+      }}, 'Update credentials');
+      const accountCard = el('div', {class:'card'}, [
+        el('header', {}, [
+          el('h2', {}, 'Administrator account'),
+          el('span', {class:'sub'},
+            (me && me.user && me.user.username)
+              ? ('signed in as ' + me.user.username)
+              : 'signed in'),
+        ]),
+        el('div', {class:'body'}, [
+          el('p', {class:'msg', style:'margin-bottom:14px'},
+            'Rotate the administrator login. Your current password is required ' +
+            'to make any change; on success every other browser session is ' +
+            'signed out so a stale cookie can\'t keep operating.'),
+          el('div', {class:'form-row'}, [
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'Current password'),
+              currentPw,
+            ]),
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'New username (optional)'),
+              newUser,
+            ]),
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'New password (optional)'),
+              newPw,
+            ]),
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'Confirm new password'),
+              newPwConfirm,
+            ]),
+          ]),
+          accountSave, accountMsg,
+        ]),
+      ]);
+
+      // ── SSO card (FleetDM-shaped, storage-only for v0.4.5).
+      // Operators paste either a metadata URL or the raw XML; tabs
+      // switch the visible field. Saving validates server-side. The
+      // actual SAML login flow ships in a later release — we surface
+      // a yellow "config saved, runtime pending" line when usable.
+      const ssoEnabled = el('input', {type:'checkbox'});
+      ssoEnabled.checked = !!sso.enabled;
+      const ssoName = el('input', {type:'text', placeholder:'e.g. Okta, Azure AD',
+        value: sso.idp_name || ''});
+      // v0.4.6: optional FleetDM-style IdP logo URL. The login screen
+      // will render this as the brand mark on the "Sign in with X"
+      // button once the runtime SSO flow ships; for v0.4.6 we just
+      // persist it.
+      const ssoLogo = el('input', {type:'text',
+        placeholder:'https://idp.example.com/logo.svg',
+        value: sso.idp_logo_url || ''});
+      const ssoUrl = el('input', {type:'text', placeholder:'https://idp.example.com/metadata',
+        value: sso.metadata_url || ''});
+      // The textarea inherits the same chrome via the global
+      // `label.field textarea` rule, plus the monospace family for
+      // pasting raw XML. Children come after the attrs object — the
+      // initial value is the only "child".
+      const ssoXml = el('textarea',
+        {rows:'6',
+         spellcheck:'false', autocapitalize:'off',
+         placeholder:'<EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata"…',
+         style:'font-family:var(--mono);font-size:12px;resize:vertical'},
+        sso.metadata || '');
+      // The mode picker is a styled <select> so it aligns with text
+      // inputs in the same `.form-row` — the global `label.field
+      // select` rule takes care of the chrome.
+      const ssoMode = el('select', {}, [
+        el('option', {value:'url'}, 'Metadata URL'),
+        el('option', {value:'xml'}, 'Metadata XML'),
+      ]);
+      ssoMode.value = sso.metadata && !sso.metadata_url ? 'xml' : 'url';
+      const urlWrap = el('label', {class:'field'}, [
+        el('span', {class:'name'}, 'IdP metadata URL'),
+        ssoUrl,
+        el('span', {class:'hint'},
+          'OpenPXE will fetch this URL once SSO sign-in lands; v0.4.6 just stores it.'),
+      ]);
+      const xmlWrap = el('label', {class:'field'}, [
+        el('span', {class:'name'}, 'IdP metadata XML'),
+        ssoXml,
+        el('span', {class:'hint'},
+          'Paste the raw <EntityDescriptor>…</EntityDescriptor> document from your IdP.'),
+      ]);
+      const refreshSsoFields = () => {
+        if (ssoMode.value === 'url') {
+          urlWrap.style.display = ''; xmlWrap.style.display = 'none';
+        } else {
+          urlWrap.style.display = 'none'; xmlWrap.style.display = '';
+        }
+      };
+      ssoMode.onchange = refreshSsoFields;
+      refreshSsoFields();
+      const ssoMsg = el('div', {class:'msg', style:'margin-top:8px'});
+      const ssoSave = el('button', {onclick: async () => {
+        ssoMsg.textContent = ''; ssoMsg.className = 'msg';
+        const payload = {
+          enabled: ssoEnabled.checked,
+          idp_name: ssoName.value,
+          idp_logo_url: ssoLogo.value,
+          metadata:     ssoMode.value === 'xml' ? ssoXml.value : '',
+          metadata_url: ssoMode.value === 'url' ? ssoUrl.value : '',
+        };
+        const r = await putJSON('/api/sso', payload);
+        if (r.ok) {
+          ssoMsg.textContent = ssoEnabled.checked
+            ? 'SSO configuration saved. Runtime sign-in flow ships in a future release.'
+            : 'SSO configuration saved (disabled).';
+          ssoMsg.className = 'msg ok';
+        } else {
+          const t = await r.text();
+          ssoMsg.textContent = 'Save failed: ' + t;
+          ssoMsg.className = 'msg err';
+        }
+      }}, 'Save SSO settings');
+      const ssoCard = el('div', {class:'card'}, [
+        el('header', {}, [
+          el('h2', {}, 'Single sign-on (SAML)'),
+          el('span', {class:'sub'},
+            sso.enabled
+              ? (sso.metadata_url || sso.metadata
+                  ? 'configured · runtime pending'
+                  : 'enabled but missing source')
+              : 'disabled'),
+        ]),
+        el('div', {class:'body'}, [
+          el('p', {class:'msg', style:'margin-bottom:14px'},
+            'Configure your SAML IdP today; OpenPXE persists the metadata so ' +
+            'when SSO sign-in lights up in a future release, no operator ' +
+            're-entry is needed. The local administrator account above is ' +
+            'always available as a fallback owner regardless of SSO state.'),
+          el('label', {class:'check', style:'margin-bottom:14px;max-width:280px'}, [
+            ssoEnabled,
+            el('span', {}, 'Enable single sign-on'),
+          ]),
+          // 3-column header strip: display name, logo URL, metadata
+          // source. All three controls inherit the same border/padding/
+          // focus chrome from the global `label.field input/select`
+          // rule, so they line up cleanly. Below: the active source
+          // field (URL or XML) spans the full width.
+          el('div', {class:'form-row cols-3'}, [
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'IdP display name'),
+              ssoName,
+              el('span', {class:'hint'}, '"Sign in with X" label on the login screen.'),
+            ]),
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'IdP logo URL'),
+              ssoLogo,
+              el('span', {class:'hint'}, 'Optional. Shown next to the IdP name on the login button.'),
+            ]),
+            el('label', {class:'field'}, [
+              el('span', {class:'name'}, 'Metadata source'),
+              ssoMode,
+            ]),
+          ]),
+          urlWrap,
+          xmlWrap,
+          ssoSave, ssoMsg,
+        ]),
+      ]);
+
+      // ── Custom logo upload.
+      // Single-file drop-zone; PNG/SVG/JPEG/WebP/GIF up to 2 MB.
+      // Persisted as <work_dir>/branding/logo.<ext> and served from
+      // /assets/logo.svg in preference to the bundled mark.
+      const logoFile = el('input', {
+        type:'file',
+        accept:'image/svg+xml,image/png,image/jpeg,image/webp,image/gif',
+        style:'display:none', id:'logo-file',
+      });
+      const logoMsg = el('div', {class:'msg', style:'margin-top:10px'});
+      const logoBust = '?v=' + Date.now(); // bust the browser cache after upload
+      logoFile.onchange = async () => {
+        if (!logoFile.files[0]) return;
+        const f = logoFile.files[0];
+        const fd = new FormData(); fd.append('file', f, f.name);
+        logoMsg.textContent = 'Uploading ' + f.name + ' (' + fmtBytes(f.size) + ')…';
+        logoMsg.className = 'msg';
+        const r = await fetch('/api/branding/logo', {method:'POST', body: fd});
+        if (r.ok) {
+          logoMsg.textContent = 'Custom logo installed. Reloading…';
+          logoMsg.className = 'msg ok';
+          setTimeout(() => location.reload(), 600);
+        } else {
+          const t = await r.text();
+          logoMsg.textContent = 'Upload failed: ' + t;
+          logoMsg.className = 'msg err';
+        }
+      };
+      const logoCard = el('div', {class:'card'}, [
+        el('header', {}, el('h2', {}, 'Branding')),
+        el('div', {class:'body'}, [
+          el('p', {class:'msg', style:'margin-bottom:14px'},
+            'Override the top-left brand mark with your own logo. Up to 2 MB; ' +
+            'PNG, SVG, JPEG, WebP, or GIF. The original OpenPXE version is ' +
+            'always shown in the bottom-left for support purposes.'),
+          el('div', {class:'logo-preview'}, [
+            el('div', {class:'swatch'},
+              el('img', {src: '/assets/logo.svg' + logoBust, alt:'current logo'})),
+            el('div', {class:'info'}, [
+              el('div', {class:'name'}, hasLogo ? 'Custom logo (uploaded)' : 'Default OpenPXE mark'),
+              el('div', {class:'meta'},
+                hasLogo
+                  ? 'Operator-uploaded; served from <work_dir>/branding/.'
+                  : 'Bundled rainbow-horizon mark. Upload an image to override.'),
+            ]),
+            el('div', {style:'display:flex;gap:8px;flex-wrap:wrap'}, [
+              el('button', {onclick: () => logoFile.click()},
+                hasLogo ? 'Replace logo' : 'Upload logo'),
+              hasLogo
+                ? el('button', {class:'danger', onclick: async () => {
+                    if (!confirm('Remove custom logo and revert to the OpenPXE mark?')) return;
+                    const r = await fetch('/api/branding/logo', {method:'DELETE'});
+                    if (r.ok || r.status === 204) {
+                      logoMsg.textContent = 'Reverted to default mark. Reloading…';
+                      logoMsg.className = 'msg ok';
+                      setTimeout(() => location.reload(), 500);
+                    } else {
+                      const t = await r.text();
+                      logoMsg.textContent = 'Clear failed: ' + t;
+                      logoMsg.className = 'msg err';
+                    }
+                  }}, 'Remove')
+                : null,
+            ]),
+          ]),
+          logoFile, logoMsg,
+        ]),
+      ]);
+
+      // ── API reference (always at the bottom of Settings).
+      // Sourced from /api/docs so the hand-curated list stays the
+      // single source of truth and the UI doesn't need its own copy
+      // baked into the JS bundle.
+      const groups = docs.groups || [];
+      const apiCard = el('div', {class:'card'}, [
+        el('header', {}, [
+          el('h2', {}, 'API reference'),
+          el('span', {class:'sub'},
+            groups.reduce((n, g) => n + (g.endpoints || []).length, 0) + ' endpoints'),
+        ]),
+        el('div', {class:'api-ref'},
+          groups.length
+            ? groups.map(g => el('div', {class:'group'}, [
+                el('h3', {}, g.name),
+                ...(g.endpoints || []).map(ep => el('div', {class:'ep'}, [
+                  el('span', {class:'method ' + (ep.method || 'get').toLowerCase()},
+                    ep.method || 'GET'),
+                  el('span', {class:'path'}, ep.path || '?'),
+                  el('span', {class:'desc'}, ep.summary || ''),
+                ])),
+              ]))
+            : el('div', {class:'empty'},
+                'No API documentation returned by /api/docs.')),
+      ]);
+
+      return el('div', {class:'grid'}, [accountCard, ssoCard, logoCard, apiCard]);
+    },
+
     about: async () => {
       const status = await getJSON('/api/status');
       return el('div', {class:'card'}, [
@@ -920,7 +1330,10 @@
           el('div', {class:'who'}, [
             el('span', {}, 'Developer: '), el('strong', {}, 'Miles Ward'), el('br'),
             el('span', {}, 'Version: '), el('strong', {}, status.version || '?'), el('br'),
-            el('span', {}, 'Base URL: '), el('strong', {}, status.public_base_url),
+            el('span', {}, 'Base URL: '), el('strong', {}, status.public_base_url), el('br'),
+            el('span', {}, 'Docs: '),
+            el('a', {href:'https://openpxe.com/', target:'_blank', rel:'noopener noreferrer'},
+              'https://openpxe.com/'),
           ]),
           el('p', {class:'msg', style:'margin-top:18px'},
             'iPXE is an internal implementation detail. Everything the firmware ' +
@@ -945,6 +1358,7 @@
     storage: 'Storage',
     hosts: 'Hosts',
     terminal: 'Terminal',
+    settings: 'Settings',
     about: 'About',
   };
 
@@ -1040,7 +1454,287 @@
     if (a) { e.preventDefault(); render(a.dataset.view); }
   });
 
-  render('dashboard');
+  // ── Auth bootstrap (v0.4.5) ──────────────────────────────────────
-  refreshChips();
+  // Before painting the dashboard, ask /api/me whether the operator
-  setInterval(refreshChips, 3000);
+  // needs to bootstrap an admin (`setup_required`), sign in
+  // (`!authenticated`), or just load the dashboard. The auth screen
+  // takes over the viewport completely — no half-rendered chrome
+  // bleeding through. Sonarr/Radarr-style.
+  let chipsInterval = null;
+  let authScreenEl = null;
+  let ssoConfig = null;
+
+  function teardownAuthScreen() {
+    if (authScreenEl && authScreenEl.parentNode) {
+      authScreenEl.parentNode.removeChild(authScreenEl);
+    }
+    authScreenEl = null;
+    document.querySelector('.shell').style.display = '';
+  }
+
+  function buildLoginCard() {
+    const usernameInput = el('input', {type:'text', name:'username', autocomplete:'username', autofocus:'autofocus', spellcheck:'false'});
+    const passwordInput = el('input', {type:'password', name:'password', autocomplete:'current-password'});
+    const err = el('div', {class:'auth-err', style:'display:none'});
+    const submit = el('button', {class:'submit', type:'submit'}, 'Sign in');
+
+    const ssoButton = ssoConfig && ssoConfig.enabled && (ssoConfig.metadata_url || ssoConfig.metadata)
+      ? el('button', {type:'button', class:'sso-btn', onclick: () => {
+          // SSO login flow lands in a later release — for now we
+          // surface a friendly note so the operator knows the config
+          // landed but the runtime hookup is pending.
+          err.textContent = 'SSO sign-in is configured but the runtime flow ships in a future release. Sign in with the local admin for now.';
+          err.style.display = '';
+        }}, [
+          el('div', {}, 'Sign in with ' + (ssoConfig.idp_name || 'SSO')),
+          el('div', {class:'meta'}, 'configured · runtime flow pending'),
+        ])
+      : null;
+
+    const form = el('form', {class:'auth-form', onsubmit: async (e) => {
+      e.preventDefault();
+      err.style.display = 'none';
+      submit.disabled = true;
+      submit.textContent = 'Signing in…';
+      try {
+        const r = await fetch('/api/login', {
+          method:'POST',
+          headers:{'Content-Type':'application/json'},
+          body: JSON.stringify({username: usernameInput.value, password: passwordInput.value}),
+        });
+        if (r.ok) {
+          passwordInput.value = '';
+          teardownAuthScreen();
+          await startDashboard();
+          return;
+        }
+        const j = await r.json().catch(() => ({}));
+        err.textContent = j.error || ('Sign-in failed: HTTP ' + r.status);
+        err.style.display = '';
+      } catch (ex) {
+        err.textContent = 'Network error: ' + (ex && ex.message ? ex.message : ex);
+        err.style.display = '';
+      } finally {
+        submit.disabled = false;
+        submit.textContent = 'Sign in';
+      }
+    }}, [
+      el('div', {class:'brand-row'}, [
+        el('img', {src:'/assets/logo.svg', alt:''}),
+        el('div', {class:'name'}, 'OpenPXE'),
+      ]),
+      el('h2', {}, 'Sign in'),
+      el('p', {class:'lede'}, 'Enter your administrator credentials. Forgot them? SSH to the host and remove work_dir/auth.json — the next launch will re-prompt for setup.'),
+      el('label', {class:'field'}, [
+        el('div', {style:'color:var(--fg-dim);font-size:12px;margin-bottom:4px'}, 'Username'),
+        usernameInput,
+      ]),
+      el('label', {class:'field'}, [
+        el('div', {style:'color:var(--fg-dim);font-size:12px;margin-bottom:4px'}, 'Password'),
+        passwordInput,
+      ]),
+      submit,
+      ssoButton,
+      err,
+      el('div', {class:'auth-foot'}, 'OpenPXE · ' + (window.location.host || '')),
+    ]);
+    return form;
+  }
+
+  function buildSetupCard() {
+    const usernameInput = el('input', {type:'text', name:'username', autocomplete:'username', autofocus:'autofocus', spellcheck:'false'});
+    const passwordInput = el('input', {type:'password', name:'password', autocomplete:'new-password'});
+    const confirmInput  = el('input', {type:'password', name:'confirm', autocomplete:'new-password'});
+    const err = el('div', {class:'auth-err', style:'display:none'});
+    const submit = el('button', {class:'submit', type:'submit'}, 'Create administrator');
+
+    const form = el('form', {class:'auth-form', onsubmit: async (e) => {
+      e.preventDefault();
+      err.style.display = 'none';
+      if (passwordInput.value !== confirmInput.value) {
+        err.textContent = 'Passwords do not match.';
+        err.style.display = '';
+        return;
+      }
+      if (passwordInput.value.length < 8) {
+        err.textContent = 'Password must be at least 8 characters.';
+        err.style.display = '';
+        return;
+      }
+      submit.disabled = true;
+      submit.textContent = 'Creating…';
+      try {
+        const r = await fetch('/api/setup', {
+          method:'POST',
+          headers:{'Content-Type':'application/json'},
+          body: JSON.stringify({username: usernameInput.value, password: passwordInput.value}),
+        });
+        if (r.ok) {
+          passwordInput.value = '';
+          confirmInput.value = '';
+          teardownAuthScreen();
+          await startDashboard();
+          return;
+        }
+        const j = await r.json().catch(() => ({}));
+        err.textContent = j.error || ('Setup failed: HTTP ' + r.status);
+        err.style.display = '';
+      } catch (ex) {
+        err.textContent = 'Network error: ' + (ex && ex.message ? ex.message : ex);
+        err.style.display = '';
+      } finally {
+        submit.disabled = false;
+        submit.textContent = 'Create administrator';
+      }
+    }}, [
+      el('div', {class:'brand-row'}, [
+        el('img', {src:'/assets/logo.svg', alt:''}),
+        el('div', {class:'name'}, 'OpenPXE'),
+      ]),
+      el('h2', {}, 'First-run setup'),
+      el('p', {class:'lede'}, 'Welcome. Create the administrator account that will own this OpenPXE deployment. Additional users come in through SSO later.'),
+      el('label', {class:'field'}, [
+        el('div', {style:'color:var(--fg-dim);font-size:12px;margin-bottom:4px'}, 'Username'),
+        usernameInput,
+      ]),
+      el('label', {class:'field'}, [
+        el('div', {style:'color:var(--fg-dim);font-size:12px;margin-bottom:4px'}, 'Password (≥8 chars)'),
+        passwordInput,
+      ]),
+      el('label', {class:'field'}, [
+        el('div', {style:'color:var(--fg-dim);font-size:12px;margin-bottom:4px'}, 'Confirm password'),
+        confirmInput,
+      ]),
+      submit,
+      err,
+      el('div', {class:'auth-foot'}, 'OpenPXE · ' + (window.location.host || '')),
+    ]);
+    return form;
+  }
+
+  function showAuthScreen(mode) {
+    // Tear down any previous screen + the dashboard chrome.
+    if (authScreenEl && authScreenEl.parentNode) {
+      authScreenEl.parentNode.removeChild(authScreenEl);
+    }
+    const shell = document.querySelector('.shell');
+    if (shell) shell.style.display = 'none';
+    if (chipsInterval) { clearInterval(chipsInterval); chipsInterval = null; }
+
+    const card = (mode === 'setup' ? buildSetupCard() : buildLoginCard());
+    authScreenEl = el('div', {class:'auth-screen'},
+      el('div', {class:'auth-card'}, card));
+    document.body.appendChild(authScreenEl);
+    // Focus the first visible input (autofocus on dynamically created
+    // inputs doesn't fire in all browsers).
+    setTimeout(() => {
+      const inp = authScreenEl.querySelector('input[type="text"], input[type="password"]');
+      if (inp) inp.focus();
+    }, 30);
+  }
+
+  async function startDashboard() {
+    // v0.4.6: light up the top-right user-menu chip. The button is
+    // hidden in index.html until /api/me confirms a signed-in session,
+    // so we don't show the icon (then hide it) when the user lands
+    // on /login. Clicking the icon opens a small popover with
+    // Name / Edit account / Sign out.
+    try {
+      const me = await fetch('/api/me').then(r => r.ok ? r.json() : null);
+      const wrap = $('[data-bind=user_menu_wrap]');
+      const pop  = $('[data-bind=user_menu_pop]');
+      const name = $('[data-bind=user_pop_name]');
+      const edit = $('[data-bind=user_pop_edit]');
+      const out  = $('[data-bind=user_pop_logout]');
+      const btn  = $('#user-menu-btn');
+      if (wrap && me && me.authenticated && me.user) {
+        wrap.style.display = '';
+        if (name) name.textContent = me.user.username;
+        if (btn) btn.title = 'Signed in as ' + me.user.username;
+        if (btn && !btn._wired) {
+          btn._wired = true;
+          btn.addEventListener('click', (e) => {
+            e.stopPropagation();
+            const open = !pop.hidden;
+            pop.hidden = open;
+            btn.setAttribute('aria-expanded', String(!open));
+          });
+        }
+        if (edit && !edit._wired) {
+          edit._wired = true;
+          edit.addEventListener('click', () => {
+            pop.hidden = true;
+            btn.setAttribute('aria-expanded', 'false');
+            render('settings');
+          });
+        }
+        if (out && !out._wired) {
+          out._wired = true;
+          out.addEventListener('click', async () => {
+            pop.hidden = true;
+            btn.setAttribute('aria-expanded', 'false');
+            await fetch('/api/logout', {method:'POST'}).catch(() => {});
+            wrap.style.display = 'none';
+            showAuthScreen('login');
+          });
+        }
+        // Click-outside-to-close, wired once. Stored on document so we
+        // don't re-attach every render.
+        if (!document._userPopWired) {
+          document._userPopWired = true;
+          document.addEventListener('click', (e) => {
+            if (pop.hidden) return;
+            if (e.target.closest('.user-menu')) return;
+            pop.hidden = true;
+            btn.setAttribute('aria-expanded', 'false');
+          });
+          document.addEventListener('keydown', (e) => {
+            if (e.key === 'Escape' && !pop.hidden) {
+              pop.hidden = true;
+              btn.setAttribute('aria-expanded', 'false');
+            }
+          });
+        }
+      }
+    } catch (e) { /* surfaces elsewhere */ }
+    render('dashboard');
+    await refreshChips();
+    if (!chipsInterval) chipsInterval = setInterval(refreshChips, 3000);
+  }
+
+  async function bootstrap() {
+    let me;
+    try {
+      me = await fetch('/api/me').then(r => r.json());
+    } catch (e) {
+      // /api/me is unauthenticated in every state — if we can't reach
+      // it the server is genuinely down, not an auth problem.
+      document.body.appendChild(el('div', {class:'auth-screen'},
+        el('div', {class:'auth-card'}, [
+          el('div', {class:'brand-row'}, [
+            el('img', {src:'/assets/logo.svg', alt:''}),
+            el('div', {class:'name'}, 'OpenPXE'),
+          ]),
+          el('h2', {}, 'Connection error'),
+          el('p', {class:'lede'}, 'Could not reach the OpenPXE server. Refresh once it is back up.'),
+        ])));
+      return;
+    }
+    // Preload the SSO config so the login card can offer the operator
+    // an "Sign in with X" button when configured. Failure is harmless.
+    try { ssoConfig = await fetch('/api/sso').then(r => r.ok ? r.json() : null); }
+    catch { ssoConfig = null; }
+
+    if (me.setup_required) {
+      showAuthScreen('setup');
+      return;
+    }
+    if (!me.authenticated) {
+      showAuthScreen('login');
+      return;
+    }
+    await startDashboard();
+  }
+
+  bootstrap();
 })();

crates/webui/src/index.html

@@ -5,8 +5,15 @@
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <meta name="color-scheme" content="dark light" />
   <title>OpenPXE</title>
-  <link rel="stylesheet" href="/assets/app.css" />
+  <!-- v0.4.61: the `?v=…` query string is replaced by the server at
-  <link rel="icon" type="image/svg+xml" href="/assets/logo.svg" />
+       request time with the running OpenPXE version. That guarantees a
+       fresh URL on every upgrade so browsers (and intermediary proxies)
+       can't keep serving stale JS / CSS / branding from before the
+       deploy. Combined with `Cache-Control: no-cache, must-revalidate`
+       on the asset handlers, the practical caching window is one
+       version. -->
+  <link rel="stylesheet" href="/assets/app.css?v={{ASSET_VERSION}}" />
+  <link rel="icon" type="image/svg+xml" href="/assets/logo.svg?v={{ASSET_VERSION}}" />
   <!-- Theme is read from localStorage *before* paint to avoid the
        dark→light flash on every navigation. Falls back to the OS
        preference and finally to dark. -->
@@ -26,11 +33,8 @@
 <div class="shell">
   <aside class="sidebar">
     <div class="brand">
-      <img src="/assets/logo.svg" alt="" />
+      <img src="/assets/logo.svg?v={{ASSET_VERSION}}" alt="OpenPXE" />
-      <div>
+      <strong>OpenPXE</strong>
-        <strong>OpenPXE</strong>
-        <div class="sub">v<span data-bind="version">0.4.1</span></div>
-      </div>
     </div>
     <nav>
       <a data-view="dashboard" class="active">Dashboard</a>
@@ -48,6 +52,7 @@
         <span class="count" data-bind="host_count">0</span>
       </a>
       <a data-view="terminal">Terminal</a>
+      <a data-view="settings">Settings</a>
       <a data-view="about">About</a>
     </nav>
     <div class="footer">
@@ -58,6 +63,10 @@
       </div>
       <div class="footer-sub">Advertised to clients</div>
       <code>{{BASE_URL}}</code>
+      <!-- The brand badge at the top can be overridden by operator-uploaded
+           logos; keep "OpenPXE v…" pinned in the footer so the backend
+           identity is always visible regardless of branding. -->
+      <div class="footer-version">OpenPXE&nbsp;v<span data-bind="version">0.4.61</span></div>
     </div>
   </aside>
 
@@ -87,11 +96,32 @@
         <path d="M20.5 14A8 8 0 0 1 10 3.5 a8 8 0 1 0 10.5 10.5z"/>
       </svg>
     </button>
+
+    <!-- v0.4.6: signed-in operator menu. Sits next to the theme toggle
+         in the top-right corner so the sidebar footer stays clean for
+         the "Service status / Advertised URL / Backend version" trio.
+         The whole block is hidden until /api/me confirms a session. -->
+    <div class="user-menu" data-bind="user_menu_wrap" style="display:none">
+      <button id="user-menu-btn" class="user-btn" type="button"
+              aria-label="Account menu" aria-haspopup="true" aria-expanded="false"
+              title="Account">
+        <svg viewBox="0 0 24 24" width="18" height="18" fill="none"
+             stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <circle cx="12" cy="8" r="3.6"/>
+          <path d="M4.5 20a7.5 7.5 0 0 1 15 0"/>
+        </svg>
+      </button>
+      <div id="user-menu-pop" class="user-pop" data-bind="user_menu_pop" hidden>
+        <div class="user-pop-name" data-bind="user_pop_name">—</div>
+        <button type="button" class="user-pop-item" data-bind="user_pop_edit">Edit account</button>
+        <button type="button" class="user-pop-item user-pop-danger" data-bind="user_pop_logout">Sign out</button>
+      </div>
+    </div>
   </header>
 
   <main class="main" id="view-root"></main>
 </div>
 
-<script src="/assets/app.js"></script>
+<script src="/assets/app.js?v={{ASSET_VERSION}}"></script>
 </body>
 </html>

crates/webui/src/lib.rs

@@ -7,11 +7,21 @@
 //! nav, top bar with secondary tabs, card-dense content panels.
 #![forbid(unsafe_code)]
 
-/// Render the top-level page. `base_url` is interpolated into the footer
+/// Render the top-level page.
-/// so operators can see at a glance what URL clients are PXE-booting from.
+///
+/// * `base_url` is interpolated into the footer so operators can see at
+///   a glance what URL clients are PXE-booting from.
+/// * `asset_version` is appended as `?v=…` to every asset URL so each
+///   release ships with brand-new asset URLs — browsers (and any
+///   intermediary proxy) can't keep serving last release's `app.js`
+///   when we know the new one is incompatible. Combined with
+///   `Cache-Control: no-cache, must-revalidate` on the asset handlers,
+///   the worst-case caching window is one version.
 #[must_use]
-pub fn index_html(base_url: &str) -> String {
+pub fn index_html(base_url: &str, asset_version: &str) -> String {
-    INDEX_HTML.replace("{{BASE_URL}}", base_url)
+    INDEX_HTML
+        .replace("{{BASE_URL}}", base_url)
+        .replace("{{ASSET_VERSION}}", asset_version)
 }
 
 #[must_use]

deploy/docker/Dockerfile

@@ -16,18 +16,100 @@
 
 ARG RUST_VERSION=1.95
 
-########## fetch iPXE binaries ##########
+########## fetch wimboot (and a sanity-check fetch of upstream iPXE) ##########
+# v0.4.61: we no longer ship the boot.ipxe.org iPXE binaries directly;
+# instead we build iPXE from source with IMAGE_PNG enabled (see the
+# ipxe-build stage below). The fetch stage still pulls wimboot (a
+# pre-signed binary from ipxe/wimboot's GitHub release) since that's
+# unrelated to the PNG concern.
 FROM debian:12-slim AS fetch
 RUN apt-get update && apt-get install -y --no-install-recommends curl ca-certificates \
  && rm -rf /var/lib/apt/lists/*
 WORKDIR /src
-COPY scripts/fetch-ipxe.sh scripts/fetch-ipxe.sh
+RUN mkdir -p assets/ipxe && \
-RUN mkdir -p assets/ipxe && bash scripts/fetch-ipxe.sh
+    curl --fail --silent --show-error --location \
+      -o assets/ipxe/wimboot \
+      https://github.com/ipxe/wimboot/releases/latest/download/wimboot \
+    || echo "wimboot fetch failed; Windows toggle will stay disabled"
+
+########## build iPXE from source with IMAGE_PNG enabled ##########
+# This stage replaces the old "grab pre-built binaries from
+# boot.ipxe.org" path. The shipped binaries there are built with the
+# default config which omits `IMAGE_PNG`, so the `console --picture`
+# call in render_menu silently no-ops — operator logos never paint.
+# Building from source lets us flip the one flag we need.
+#
+# Cross-compilation: x86_64 + i386 use the native toolchain that ships
+# in the rust:bookworm base; arm64 uses gcc-aarch64-linux-gnu. The four
+# output binaries match the names openpxe-ipxe-assets expects in
+# assets/ipxe/.
+FROM rust:${RUST_VERSION}-bookworm AS ipxe-build
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+        git build-essential liblzma-dev mtools genisoimage syslinux \
+        gcc-aarch64-linux-gnu \
+ && rm -rf /var/lib/apt/lists/*
+WORKDIR /build
+# Pin to a recent iPXE master tip via shallow clone. iPXE doesn't tag
+# releases; pinning the SHA in source would be a periodic chore. The
+# tradeoff is that "rebuild the container" silently picks up upstream
+# patches — for a boot loader this is the right side of the
+# pin-vs-fresh tradeoff (we want CVE fixes ASAP and the PXE chain is
+# the trusted base).
+RUN git clone --depth=1 https://github.com/ipxe/ipxe.git ipxe
+WORKDIR /build/ipxe/src
+# Feature flags landed via the `config/local/` override files iPXE's
+# config system reads after `config/general.h`. We enable just the
+# image format + framebuffer console plumbing — everything else stays
+# at the upstream default. `keep-debug` is off; `parserrors` is off; we
+# pin a small set of useful tweaks.
+RUN mkdir -p config/local \
+ && printf '%s\n' \
+      '#define IMAGE_PNG'           \
+      '#define CONSOLE_FRAMEBUFFER' \
+      '#define CONSOLE_VESAFB'      \
+      '#define DOWNLOAD_PROTO_HTTPS' \
+      '#define NSLOOKUP_CMD'        \
+      '#define NTP_CMD'             \
+    > config/local/general.h
+# Each arch builds to its own `bin-*` directory. We copy the four
+# output binaries into /out/ with the names openpxe-ipxe-assets
+# expects. Stripping the binaries saves ~30% — they go into the rust
+# binary via include_bytes! so the savings ripple through the final
+# image.
+RUN mkdir -p /out && \
+    make -j"$(nproc)" bin/undionly.kpxe && \
+    cp bin/undionly.kpxe /out/undionly.kpxe && \
+    make -j"$(nproc)" bin-x86_64-efi/snponly.efi && \
+    cp bin-x86_64-efi/snponly.efi /out/snponly.efi && \
+    make -j"$(nproc)" bin-x86_64-efi/ipxe.efi && \
+    cp bin-x86_64-efi/ipxe.efi /out/ipxe.efi && \
+    make -j"$(nproc)" bin-i386-efi/snponly.efi && \
+    cp bin-i386-efi/snponly.efi /out/snponly-i386.efi && \
+    make -j"$(nproc)" CROSS_COMPILE=aarch64-linux-gnu- bin-arm64-efi/snponly.efi && \
+    cp bin-arm64-efi/snponly.efi /out/snponly-arm64.efi && \
+    ls -lh /out/
 
 ########## build openpxe ##########
 FROM rust:${RUST_VERSION}-bookworm AS build
 WORKDIR /src
 
+# v0.4.5: build a fully static musl binary (matches Bootimus v0.1.70's
+# move). The resulting `/openpxe` has no glibc dependency at all, which:
+#   - Lets the runtime stage be any Linux distro (we still ship Debian
+#     slim for the `samba` / `wimtools` / `nfs-common` shellouts, but a
+#     scratch/distroless variant becomes a one-line swap).
+#   - Cuts a class of "GLIBC_2.39 not found" surprises when running on
+#     older RHEL/Rocky hosts that don't match Debian 12's libc version.
+#   - Sidesteps cross-compilation snags (the binary is its own world).
+#
+# x86_64-unknown-linux-musl is fully static by default (no extra
+# RUSTFLAGS needed). musl-tools provides the linker.
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends musl-tools \
+ && rm -rf /var/lib/apt/lists/* \
+ && rustup target add x86_64-unknown-linux-musl
+
 # Copy the whole workspace in one go. We used to do a two-pass "cache-prime
 # with stubs, then real build" dance for dep-compile reuse; that turned out
 # to silently serve stale stub binaries when cargo's fingerprint didn't
@@ -40,16 +122,20 @@ WORKDIR /src
 # `cargo build`, which is slow and can exhaust small Colima/CI disks.
 COPY Cargo.toml Cargo.lock ./
 COPY crates/ crates/
-COPY --from=fetch /src/assets/ipxe /src/assets/ipxe
+# v0.4.61: iPXE binaries come from our own source-built stage with
+# IMAGE_PNG enabled. wimboot still comes from the fetch stage (it's
+# from ipxe/wimboot's GitHub release, separately signed).
+COPY --from=ipxe-build /out/ /src/assets/ipxe/
+COPY --from=fetch /src/assets/ipxe/wimboot /src/assets/ipxe/wimboot
 
-# Cache cargo registry + target across builds. The `--no-edit` touch is
+# Cache cargo registry + target across builds. The mtime touch is
 # belt-and-suspenders: cargo occasionally misses mtime-only changes on
 # networked FS; this forces a fingerprint check.
 RUN --mount=type=cache,target=/usr/local/cargo/registry \
     --mount=type=cache,target=/src/target,sharing=locked \
     find crates -name '*.rs' -exec touch {} + && \
-    cargo build --release --bin openpxe && \
+    cargo build --release --target x86_64-unknown-linux-musl --bin openpxe && \
-    cp target/release/openpxe /openpxe && \
+    cp target/x86_64-unknown-linux-musl/release/openpxe /openpxe && \
     ls -l /openpxe
 
 ########## runtime ##########
@@ -62,22 +148,28 @@ RUN apt-get update \
  && useradd --system --uid 10001 --home-dir /var/lib/openpxe --shell /usr/sbin/nologin openpxe \
  && mkdir -p /var/lib/openpxe/isos /var/lib/openpxe/work /var/lib/openpxe/smb \
  && chown -R openpxe:openpxe /var/lib/openpxe
-# Runtime deps explained:
+# v0.4.5: the openpxe binary itself is now built against musl and is
-#   wimtools  - provides `wimlib-imagex`, used to inject startnet.cmd into boot.wim.
+# fully static — no glibc dependency. The runtime stage still ships
-#   samba     - `smbd` serves extracted Windows install media on :445 for WinPE
+# Debian slim because OpenPXE shells out to the four packages below for
-#               to `net use`. Guest read-only, scoped to /var/lib/openpxe/smb.
+# functionality we deliberately don't reimplement in-process:
-#   nfs-common - provides `mount.nfs` / `mount.nfs4` for the Storage tab's
+#   wimtools   - `wimlib-imagex`, used to inject startnet.cmd into boot.wim.
-#               NFS share manager. Mount also requires the container to run
+#   samba      - `smbd` serves extracted Windows install media on :445 so
-#               with CAP_SYS_ADMIN — without it, mount(2) returns EPERM and
+#                WinPE can `net use`. Guest read-only, scoped to
-#               the manager surfaces a clear error in the UI instead of
+#                /var/lib/openpxe/smb.
-#               failing silently.
+#   nfs-common - `mount.nfs` / `mount.nfs4` for the Storage tab's NFS
-#   iproute2  - `ip addr` / `ip route` for the auto-detected Network tab
+#                share manager. Mount requires CAP_SYS_ADMIN; without it
-#               fields (NIC name, subnet mask, default gateway). Tiny,
+#                mount(2) returns EPERM and the manager surfaces a clear
-#               always available; we don't pull in netlink crates for
+#                error in the UI.
-#               this one-shot startup probe.
+#   iproute2   - `ip addr` / `ip route` for the auto-detected Network
-#   gosu      - drops privileges cleanly from root after the entrypoint fixes
+#                tab fields (NIC name, subnet mask, default gateway).
-#               bind-mount ownership (common OpenShift/Docker UX issue).
+#                Tiny, always available; we don't pull in netlink crates
-# Windows-specific tools only activate when the WebUI toggle is on.
+#                for this one-shot startup probe.
+#   gosu       - drops privileges cleanly from root after the entrypoint
+#                fixes bind-mount ownership (common OpenShift/Docker UX
+#                issue).
+# A future "openpxe-static" variant could drop everything except the
+# binary onto distroless once we move the Windows + NFS legs to
+# in-process Rust crates.
 
 COPY --from=build /openpxe /usr/local/bin/openpxe
 COPY deploy/docker/entrypoint.sh /usr/local/bin/entrypoint.sh