v0.6.0: bootable-ISO polish + close the 0.5.x chapter

Builds on v0.5.9's El Torito detection to make the boot menu honest and clean, and confirms generic El Torito ISOs (ESXi/VMvisor installers, BSDs, firmware tools) boot via iPXE sanboot with no special-casing: - generate_boot_entries: an Unknown-family ISO now produces a sanboot entry only when it's actually bootable — it carries an El Torito catalog, OR it's a remote-share ISO we couldn't introspect (rev 0, assumed bootable). A locally-introspected ISO with no boot catalog (a data/appliance image like a VMware vCenter Server Appliance bundle) yields NO entry, so it stays out of the iPXE menu instead of offering a pick that always fails. ESXi installers (Unknown family + El Torito) surface under the installer menu and sanboot the raw ISO — backed by HTTP range reads, so size is moot. - Dropped the stale "(SAN boot — may fail for >1GiB ISOs)" disclaimer and refreshed the SanBootIso doc: sanboot is the primary path for Windows and any El Torito image, and HTTP range reads remove the size limit. - WebUI: renamed the dashboard panel "Images that won't boot with current settings" -> "Non-bootable images" (there's no setting that would make a data/appliance ISO boot). - Tests: el_torito catalog detection + boot-entry generation across the ESXi / VCSA / remote-share cases. Full v0.5.0->v0.5.9 compatibility sweep: clippy clean; entire workspace test suite green (core 96, http-api 31+68, iso-store 61, dhcp 1, tftp 6, bin 2); app.js syntax-checked. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
v0.5.9: El Torito boot detection + retroactive re-introspect; static SSO login button
2026-06-05 13:02:30 -04:00 · 2026-06-05 11:47:41 -04:00 · 2026-06-05 04:34:28 -04:00 · 2026-06-05 04:30:41 -04:00 · 2026-06-04 21:24:15 -04:00 · 2026-06-03 19:28:02 -04:00
43 changed files with 6094 additions and 937 deletions
@@ -1,16 +0,0 @@
 {
  "permissions": {
    "allow": [
      "Bash(cargo check *)",
      "Bash(cargo build *)",
      "Bash(cargo clippy *)",
      "Bash(cargo fmt *)",
      "Bash(cargo tree *)",
      "Bash(cargo doc *)",
      "Bash(cargo test --workspace --lib)",
      "Bash(cargo test --workspace)",
      "Bash(cargo --version)",
      "Bash(rustc --version)"
    ]
  }
 }
@@ -11,3 +11,6 @@ data/work/
 .claude/settings.local.json
 .claude/worktrees/
 .claude/scheduled_tasks.lock
 # local editor / agent settings (not part of the project)
 .claude/
@@ -12,7 +12,7 @@ members = [
 ]
 [workspace.package]
-version = "0.5.1"
+version = "0.6.0"
 edition = "2021"
 rust-version = "1.95"
 license = "MIT OR Apache-2.0"
@@ -36,25 +36,25 @@ tower = "0.5"
 tower-http = { version = "0.6", features = ["fs", "trace", "cors", "limit"] }
 hyper = "1.4"
 reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "stream", "json"] }
 mime = "0.3"
 mime_guess = "2.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 toml = "0.8"
 # v0.5.4: layered config (TOML file + env). Pure-Rust, no C deps; keeps the
 # static-musl build OpenSSL-free. Replaces the hand-rolled apply_env mapping.
 figment = { version = "0.10", features = ["toml", "env"] }
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
 anyhow = "1.0"
-thiserror = "1.0"
+thiserror = "2.0"
 clap = { version = "4.5", features = ["derive", "env"] }
 uuid = { version = "1.10", features = ["v4", "serde"] }
 time = { version = "0.3", features = ["serde", "serde-human-readable", "formatting", "macros"] }
 sha2 = "0.10"
 hex = "0.4"
 bcrypt = "0.15"
 once_cell = "1.19"
 parking_lot = "0.12"
 rust-embed = { version = "8.5", features = ["include-exclude"] }
@@ -85,6 +85,36 @@ x509-parser = "0.18"
 flate2 = "1.1"
 base64 = "0.22"
 # v0.5.5: pure-Rust SSH/SFTP client for reading remote ISO libraries
 # over SFTP without a kernel mount.
 #
 # CRITICAL #1 — crypto backend: `default-features = false` +
 # `features = ["ring"]`. russh's *default* backend is `aws-lc-rs`, which
 # pulls `aws-lc-sys` (C code, fiddly under musl); the `ring` feature
 # instead reuses `ring 0.17` — the exact crate+version already in the
 # binary via rustls + bergshamra — so SFTP adds ZERO new C/crypto deps
 # and the static-musl build stays OpenSSL-free.
 #
 # CRITICAL #2 — pinned to EXACTLY 0.55.0, the newest russh that
 # coexists with bergshamra-crypto (our SAML core). The RustCrypto
 # ecosystem is mid-transition: bergshamra-crypto pins a constellation of
 # release-CANDIDATE crates (`pkcs8 =0.11.0-rc.11` and its matching
 # pkcs5/spki RCs) that are API-incompatible with the STABLE versions of
 # the same crates in the same semver bucket. russh 0.56+ pulls those
 # stable crates (`pkcs5 0.8`), which silently replaces bergshamra's RC
 # copies and breaks compilation. russh ≤0.55 stays on the previous stable
 # generation (`pkcs5 0.7`, `ssh-key 0.6`), which unifies with bergshamra's
 # *stable* deps and leaves the RC bucket untouched — verified to compile.
 # 0.55 still has the merged `russh::keys` API (keys merged at 0.50).
 # IMPORTANT: do NOT bump russh past 0.55 until bergshamra-crypto adopts
 # the stable RustCrypto generation; 0.56+ will not compile in this tree.
 #
 # SCP was deliberately rejected: the protocol is sequential-only (no
 # random access → no HTTP Range, unlike SFTP/NFS) and the mature SCP
 # crates wrap libssh2 (C + OpenSSL), which would break this build.
 russh = { version = "=0.55.0", default-features = false, features = ["ring"] }
 russh-sftp = "2.3"
 openpxe-core = { path = "crates/core" }
 openpxe-dhcp-proxy = { path = "crates/dhcp-proxy" }
 openpxe-tftp = { path = "crates/tftp" }
@@ -1,301 +1,270 @@
-# OpenPXE
+<p align="center">
  <img src="docs/openpxe-logo.svg" alt="OpenPXE" width="104" height="104" />
 </p>
-Container-native PXE boot server. A Rust reimplementation of
+<h1 align="center">OpenPXE</h1>
 [iVentoy (ventoy/PXE)](https://github.com/ventoy/PXE), designed from scratch
 for Docker/OCI and OpenShift. Upload `.iso` files via the web UI; network
 clients PXE-boot them.
-> **Status:** v0.4.1 / pre-beta. Phases 1–5 complete: full PXE stack,
+<p align="center">
-> Queued Deployment queue, NFS-share ISO sources, live tracing log + an
+  <strong>Container-native network boot &amp; OS deployment — built in Rust.</strong>
-> operator terminal, per-MAC host bindings, Prometheus `/metrics`,
+</p>
 > light/dark theme toggle, animated OpenPXE imaging-progress widget,
 > chunked ISO uploads, and per-ISO boot passwords. The test suite and
 > clippy are part of the release checklist. Ready for real-hardware validation.
-## Design non-negotiables
+<p align="center">
  Drag in an ISO. PXE-boot and image an entire fleet from a browser.<br/>
  No iPXE scripting. No <code>dnsmasq</code> + <code>tftpd</code> + Samba glue. No glibc. No garbage collector.
 </p>
-1. **Fully offline / air-gap deployable.** Zero CDN assets. Zero external
+<p align="center">
-   HTTP calls from the server, the browser, or the generated iPXE scripts.
+  <img alt="release"   src="https://img.shields.io/badge/release-v0.5.8-2874d7" />
-   Build the container once, run forever disconnected.
+  <img alt="license"   src="https://img.shields.io/badge/license-MIT%20%7C%20Apache--2.0-59824f" />
-2. **iPXE is a backend implementation detail.** No `.ipxe` upload path, no
+  <img alt="rust"      src="https://img.shields.io/badge/built%20with-Rust-fb8841?logo=rust&logoColor=white" />
-   manual script editing, no iPXE terminology in the UI. Every knob in the
+  <img alt="container" src="https://img.shields.io/badge/container--native-OCI%20%C2%B7%20OpenShift-2496ED?logo=docker&logoColor=white" />
-   web UI maps to a specific script-generation behavior inside the binary.
+  <img alt="binary"    src="https://img.shields.io/badge/static-musl%20%C2%B7%20~18MB-330f1f" />
-3. **The client trust store is off-limits.** No test-signed drivers, no
+</p>
   `bcdedit /set testsigning on`, no certificates injected into WinPE or
   the target OS.
-## What it does
+---
-1. **DHCP proxy** (RFC 4578). Coexists with your existing DHCP server —
+OpenPXE turns bare-metal provisioning into a single container with a web UI. It's a
-   never assigns IPs. Listens on UDP 67 + UDP 4011.
+ground-up Rust reimplementation of [iVentoy (ventoy/PXE)](https://github.com/ventoy/PXE),
-2. **TFTP server** (RFC 1350 + RFC 2347/2348/2349/7440 option negotiation)
+designed for Docker/OCI and OpenShift instead of a Windows desktop — so it drops onto
-   that serves architecture-specific iPXE binaries to firmware PXE ROMs.
+an Unraid box, a Linux server, or a Kubernetes cluster and just runs.
 3. **HTTP server** that serves the web UI, the generated iPXE boot scripts,
   raw ISOs (with Range), and files inside ISOs without prior extraction.
 4. **ISO introspection**: auto-detects the distro family and generates the
   appropriate kernel+initrd or wimboot chain. No manual config.
 5. **Hierarchical PXE menu** mirroring the Phase 2 spec:
   ```
   Default        > Boot from Local HDD
   Installers     > Linux Installers  / Windows Installers
   Tools          > Utilities / OpenPXE Shell / Network Card Info
   Queued Deployment
   ```
 6. **Queued Deployment queue** — the coordinated launch flow. A client that
   selects *Queued Deployment* gets a numbered position and waits. The
   operator picks an ISO in the web UI and fires it to every waiting
   client simultaneously.
 7. **Web UI** (Netbox-style): sidebar nav (Dashboard / Network / Queue /
   Storage / Hosts / Terminal / About), light + dark themes
   (toggle top-right or press `T`), animated OpenPXE progress
   widget when devices are imaging. All assets served from the binary —
   no external requests.
 8. **Per-MAC host bindings.** Pin a MAC to a boot target and the client
   skips the menu, chains straight through.
 9. **Prometheus metrics** at `/metrics` — DHCP replies by arch, TFTP
   transfer counts and bytes, HTTP request counts by route, queue /
   imaging gauges, uptime, build info. Plain text exposition format,
   no external metrics framework dependency.
 8. **Settings API** lets you change the default boot-menu timeout (default
   600s), the timeout action (stay / Local HDD / Queued Deployment), and
   feature toggles like Windows ISO support. The iPXE scripts regenerate
   on every request using current settings.
-### Architectures supported on day one
+Upload `.iso` files (or point at a remote share), and any machine on the network boots
 them — Linux installers, live tools, or stock Windows setup — with **zero iPXE knowledge
 required by the operator.**
-| DHCP option 93 | Architecture    | Binary served           |
+> **Status — v0.5.5, late pre-beta.** The full PXE stack, web UI, remote ISO libraries
-|----------------|-----------------|-------------------------|
+> (SMB/NFS/SFTP), Windows deployment, queued fleet rollout, SAML SSO, and Prometheus
-| `0x0000`       | Legacy x86 BIOS | `undionly.kpxe`         |
+> metrics are implemented and test-covered. The release checklist gates every tag on the
-| `0x0006`       | IA32 UEFI       | `snponly-i386.efi`      |
+> full test suite + `clippy`. Currently in real-hardware validation.
 | `0x0007`/`0x0009` | x86_64 UEFI  | `snponly.efi`           |
 | `0x000B`       | ARM64 UEFI      | `snponly-arm64.efi`     |
-UEFI firmware that sends `HTTPClient` in option 60 is handled too — we
+## Why OpenPXE
 skip TFTP and respond with an HTTP URL.
-## Quick start — MVP container (recommended)
+Standing up network boot the traditional way means hand-wiring `dnsmasq`, a TFTP daemon,
 hand-written iPXE menu scripts, an HTTP server, and Samba — then keeping that fragile
 stack alive, and discovering none of it containerizes cleanly (kernel-mount NFS, raw
 sockets, `CAP_SYS_ADMIN`). iVentoy solved the UX beautifully, but it's a Windows GUI app.
 OpenPXE collapses that whole stack into **one statically-linked binary in one container**:
 - **A web UI does everything.** iPXE is an internal implementation detail — there is no
  script upload, no `.ipxe` editing, no PXE jargon in the interface.
 - **It runs anywhere a container runs.** No kernel modules, no privileged mode — proxy-mode
  DHCP + `NET_BIND_SERVICE` is the entire requirement. Verified on Unraid, plain Docker,
  and OpenShift's restricted SCC.
 - **It's air-gap native.** Zero CDN assets, zero outbound calls from the server, browser,
  or generated boot scripts. Build the image once, run it forever, disconnected.
 ## Highlights
 #### Boot stack
 - **DHCP proxy** (RFC 4578) that coexists with your existing DHCP — it never hands out IPs.
 - **TFTP** (RFC 1350 + 2347/2348/2349/7440 option negotiation) serving arch-correct iPXE firmware.
 - **HTTP** serving the UI, generated boot scripts, raw ISOs (with byte-range), and files
  *inside* ISOs with no prior extraction.
 - **Graphical iPXE boot menu** built from your uploads, with a PNG background and a clean
  hierarchy — generated fresh on every request from current settings.
 #### ISO management & remote libraries
 - **Drag-and-drop chunked uploads** that don't 502 on multi-GB images.
 - **Automatic introspection** — detects the distro family and generates the right
  kernel+initrd or Windows `wimboot` chain. No manual config.
 - **Remote ISO libraries, streamed on demand** (no local cache) over **SMB, NFS, or SFTP** —
  see the table below.
 #### Fleet deployment
 - **Queued Deployment** — clients join a queue and wait; the operator fires one image at
  every waiting machine simultaneously.
 - **Per-MAC host bindings** — pin a MAC straight to a target (with optional auto hostname,
  auto IP, and an unattended answer file); it skips the menu and chains through.
 - **Unattended installs** — upload Kickstart / Preseed / Autoinstall / Windows answer files;
  they're templated per-host (hostname / IP / MAC) and served only to booting clients.
 - **Windows deployment** from a stock Microsoft ISO — **every binary the client runs stays
  Microsoft-signed** (details below).
 #### Operations & access
 - **SAML 2.0 single sign-on** (pure-Rust SP, no OpenSSL/xmlsec) alongside local accounts.
 - **Custom branding** — light / dark / PXE-client logos and favicon.
 - **Notifications** — Slack / Teams / Discord webhooks and SMTP email on boot events.
 - **Prometheus `/metrics`**, a built-in operator **terminal**, live tracing log, and
  `/healthz` · `/readyz` probes.
 - **Layered config** — defaults → TOML file → `OPENPXE_*` env, in that order.
 ## Built in Rust
 Rust isn't a checkbox here — it's why OpenPXE deploys the way it does:
 - **One static binary, ~18 MB.** Compiled to `x86_64-unknown-linux-musl` — no glibc, no
  interpreter, no sidecar runtime. The runtime image is "binary + a few CLI tools."
 - **No garbage collector, async throughout.** A Tokio runtime drives DHCP, TFTP, HTTP, and
  many concurrent multi-GB ISO streams on a tiny, predictable memory footprint — it idles
  near-zero and never GC-pauses mid-transfer.
 - **Memory-safe by construction.** `unsafe` is **denied workspace-wide**; the only
  exceptions are two small, individually-audited FFI calls (`statvfs` for disk usage and a
  Samba `SIGHUP`).
 - **OpenSSL-free, pure-Rust crypto.** TLS via `rustls`/`ring`; the SAML Service Provider
  does XML-DSig verification with RustCrypto — no `xmlsec`, no `libxml2`, no C crypto to
  CVE-patch. Even the SMB/NFS/SFTP clients avoid C libraries.
 - **Sub-minute, reproducible container builds.** Cross-compiled with `cargo-zigbuild`
  (zig as the linker) — a full image builds in well under a minute on a warm cache, with
  no QEMU emulation.
 ## Quick start
 ### Run the container
 ```bash
-# 1. Pull bundled iPXE binaries (~2 MB, one-time).
+# Build the self-contained image (iPXE binaries are fetched + built inside the Dockerfile).
-./scripts/fetch-ipxe.sh
+docker build -f deploy/docker/Dockerfile -t openpxe:0.5.5 .
-# 2. Build the container image (~3 min first time).
+# Run it on the box plugged into your PXE network. Host networking is required in
-docker buildx build -f deploy/docker/Dockerfile -t openpxe:0.4.1 --load .
+# proxy mode so the container sees DHCPDISCOVER broadcasts; set PUBLIC_IP to this
-
+# host's LAN address so advertised boot URLs are reachable.
-# 3. Run it on the box plugged into your PXE network. Set PUBLIC_IP to
+docker run -d --name openpxe --network host \
 #    this host's LAN address so advertised iPXE URLs are reachable.
 docker run -d --name openpxe \
  --network host \
  -e OPENPXE_PUBLIC_IP=10.0.0.5 \
  -e OPENPXE_DHCP_MODE=proxy \
  -v $PWD/data/isos:/var/lib/openpxe/isos \
  -v $PWD/data/work:/var/lib/openpxe/work \
-  openpxe:0.4.1
+  openpxe:0.5.5
-# 4. Open the UI and drop an ISO in.
+# Open the UI and drop an ISO in.
 open http://10.0.0.5
 ```
-Host networking is required in proxy mode so the container sees DHCPDISCOVER
+> On macOS/Windows, Docker runs inside a Linux VM, so "host network" means the VM — use
-broadcasts from the PXE VLAN. On macOS/Windows hosts Docker runs in a Linux
+> the `openpxe-dev` service in `docker-compose.yml` for API-only testing on a laptop:
-VM, so "host" means the VM — use `openpxe-dev` in `docker-compose.yml` for
+> `OPENPXE_PUBLIC_IP=127.0.0.1 docker compose up openpxe-dev`.
 API-only testing on a laptop.
-### Quick start — docker compose
+### Build from source
 ```bash
-# MVP / API testing on a laptop (no DHCP, high ports):
+./scripts/fetch-ipxe.sh          # populate assets/ipxe/ (embedded at compile time)
-OPENPXE_PUBLIC_IP=127.0.0.1 docker compose up openpxe-dev
+cargo run --release              # needs root or CAP_NET_BIND_SERVICE for :80/:69
 # Real PXE deployment on a Linux host (host network, DHCP proxy on):
 OPENPXE_PUBLIC_IP=10.0.0.5  docker compose up openpxe
 ```
-### Multi-arch build + push
+### Pre-seed ISOs from a directory
 For deploying to x86_64 servers, build both arches in one manifest:
 ```bash
 # One-time: bootstrap a multi-arch builder.
 docker buildx create --name openpxe-multi --driver docker-container --use
 # Build + push both linux/amd64 and linux/arm64 under one tag.
 docker buildx build --builder openpxe-multi \
  --platform linux/amd64,linux/arm64 \
  -t ghcr.io/YOUR-ORG/openpxe:0.4.1 \
  --push \
  -f deploy/docker/Dockerfile .
 ```
 On an Apple Silicon host, the amd64 stage runs under QEMU emulation (~10-15 min for a cold cache). On a Linux x86_64 host, both arches build natively at normal speed. CI runners on GitHub Actions with `docker/build-push-action@v5` handle this cleanly.
 ### Build from source (no container)
 ```bash
 ./scripts/fetch-ipxe.sh
 cargo run --release            # needs NET_BIND_SERVICE or root for :80/:69
 ```
 ### Container health probes
 | Endpoint    | Purpose                                                       |
 |-------------|---------------------------------------------------------------|
 | `/healthz`  | Liveness — HTTP stack alive. Always 200.                      |
 | `/readyz`   | Readiness — 200 only if iPXE binaries bundled + ISO dir OK.   |
 | `/api/status` | Full JSON status: versions, assets, counts, live settings, SMB state. |
 ### Pre-seeding ISOs from a directory
 For CI, pre-baked homelab deployments, or a fresh PVC, the binary has a
 `seed` subcommand that imports every `*.iso` from a host path through the
 same pipeline the web UI uses (introspection + boot-entry generation):
 ```bash
 docker run --rm \
  -v /my/iso-library:/seed:ro \
  -v openpxe-data:/var/lib/openpxe/isos \
  -e OPENPXE_PUBLIC_IP=10.0.0.5 \
-  openpxe:0.4.1 seed --from /seed
+  openpxe:0.5.5 seed --from /seed          # add --dry-run to preview
 # Dry run first to see what would be imported:
 docker run --rm -v /my/iso-library:/seed:ro openpxe:0.4.1 seed --from /seed --dry-run
 ```
-### Environment overrides
+## Remote ISO libraries
-| Var                    | Default                     | Meaning                                |
+Point OpenPXE at a NAS and boot ISOs straight off it — **read on demand, no local copy**,
-|------------------------|-----------------------------|----------------------------------------|
+so a 50-ISO library costs zero disk on the OpenPXE host. All three clients are userspace
-| `OPENPXE_HTTP_PORT`   | `80`                        | Web UI + boot script HTTP port         |
+(no kernel mounts, no `CAP_SYS_ADMIN`); pick whichever your storage speaks.
 | `OPENPXE_TFTP_PORT`   | `69`                        | TFTP port                              |
 | `OPENPXE_DHCP_PORT`   | `67`                        | DHCP server-side port                  |
 | `OPENPXE_DHCP_MODE`   | `proxy`                     | `proxy` or `disabled`                  |
 | `OPENPXE_PUBLIC_IP`   | auto-detect                 | Advertised IP for clients. Startup **fails** if unset and auto-detect returns loopback. |
 | `OPENPXE_ISO_DIR`     | `/var/lib/openpxe/isos`    | Where uploaded ISOs live               |
 | `OPENPXE_WORK_DIR`    | `/var/lib/openpxe/work`    | Scratch + runtime settings             |
 | `OPENPXE_LOG`         | `info,openpxe=debug`       | `tracing` filter                       |
-## What the boot menu looks like on a real client
+| Protocol | Implementation | Auth | HTTP Range¹ |
 |----------|----------------|------|-------------|
 | **NFS** (v3) | Pure-Rust in-process client | Client-IP (server export list) | ✅ |
 | **SFTP** (SSH) | Pure-Rust in-process client (`russh`) | Password **or** SSH key · host-key TOFU | ✅ |
 | **SMB** / CIFS | Userspace `smbclient` | Guest or username/password | — |
 ¹ Range support lets clients seek into a multi-GB ISO without downloading what comes
 before it — needed for kernel/initrd extraction and `httpdisk`-style boots. NFS and SFTP
 expose explicit offsets; the SMB CLI streams sequentially, so SMB-sourced ISOs serve whole-file.
 ## Supported client architectures
 | DHCP option 93 | Architecture | Firmware served |
 |----------------|--------------|-----------------|
 | `0x0000` | Legacy x86 BIOS | `undionly.kpxe` |
 | `0x0006` | IA32 UEFI | `snponly-i386.efi` |
 | `0x0007` / `0x0009` | x86_64 UEFI | `snponly.efi` |
 | `0x000B` | ARM64 UEFI | `snponly-arm64.efi` |
 UEFI firmware that advertises `HTTPClient` (option 60) skips TFTP entirely and is handed an HTTP URL.
 ## The boot menu, on a real client
 ```
-                        OpenPXE - network boot menu
+                        OpenPXE — network boot menu
 ------------------------- Default -------------------------
 Boot from Local HDD
- ----------------------- Installers -----------------------
+ ----------------------- Installers ------------------------
 Linux Installers   >
 Windows Installers >                (only if enabled in Settings)
 -------------------------- Tools --------------------------
- Tools              >                Utilities / Shell /
+ Tools              >    Utilities / OpenPXE Shell / NIC Info / Reboot
                                     NIC Info / Reboot /
                                     Exit and continue BIOS
 ---------------------- Queued Deployment ------------------
 Queued Deployment   (join queue)
 ```
-Linux/Windows submenus show file sizes iVentoy-style:
+Linux/Windows submenus list images iVentoy-style with sizes:
 ```
-                   OpenPXE - Linux Installers
+                   OpenPXE — Linux Installers
 [  4376 MB]  CentOS-7-x86_64-DVD-1810
 [  2002 MB]  Fedora-Workstation-Live-x86_64-38-1.6
 [  4699 MB]  ubuntu-22.04.2-desktop-amd64
 [  2002 MB]  Fedora-Workstation-Live-x86_64-38-1.6
            < Back to main menu
 ```
-iPXE never appears in the UI — the whole hierarchy above is generated from
+The entire hierarchy is generated from what you upload and toggle — iPXE never surfaces.
-ISOs you upload via drag-and-drop in the web UI plus toggles in Settings.
+
 ## Windows deployment
 Enable **Windows ISO support** in Settings, then upload a **stock, unmodified** Microsoft ISO:
 1. On upload, OpenPXE uses `wimlib-imagex` to inject exactly two plain-text files into the
   WinPE image (`winpeshl.ini` + `startnet.cmd`) — no drivers, no certificates.
 2. The container's Samba `smbd` serves the extracted install tree on `:445`.
 3. The client chainloads `wimboot` → patched WinPE → Windows Setup running off the share.
 **Every executable the client runs is stock Microsoft-signed.** OpenPXE never ships
 drivers, never installs certificates into the client trust store, and never recommends
 `bcdedit /set testsigning on`. The SMB approach is adapted (re-implemented, not copied)
 from [Bootimus](https://github.com/garybowers/bootimus) (Apache-2.0). Port `445` must be
 directly reachable from clients; Windows 10/11 client SKUs are the tested target.
 ## Configuration
 All settings have defaults and layer **defaults → TOML (`--config` / `OPENPXE_CONFIG`) →
 `OPENPXE_*` env**. The common knobs:
 | Var | Default | Meaning |
 |-----|---------|---------|
 | `OPENPXE_PUBLIC_IP` | auto-detect | IP advertised to clients. **Startup fails** if unset and auto-detect yields loopback. |
 | `OPENPXE_DHCP_MODE` | `proxy` | `proxy` or `disabled` |
 | `OPENPXE_HTTP_PORT` | `80` | Web UI + boot-script HTTP port |
 | `OPENPXE_TFTP_PORT` | `69` | TFTP port |
 | `OPENPXE_DHCP_PORT` | `67` | DHCP server-side port |
 | `OPENPXE_ISO_DIR` | `/var/lib/openpxe/isos` | Uploaded ISOs |
 | `OPENPXE_WORK_DIR` | `/var/lib/openpxe/work` | Scratch, settings, share + branding state |
 | `OPENPXE_LOG` | `info,openpxe=info` | `tracing` filter |
 ## OpenShift
 ```bash
 oc apply -f deploy/openshift/
 oc -n openpxe get all
 oc -n openpxe get route openpxe -o jsonpath='{.spec.host}'
 ```
-### Why a custom SCC?
+The bundled `openpxe-scc` grants exactly `hostNetwork` (CNI overlays don't deliver L2
 broadcast into pod netns) and `NET_BIND_SERVICE` (to bind ports <1024) — nothing else.
 No raw sockets, no privileged mode. The Route covers `80/TCP`; PXE clients reach UDP
 67/69/4011 on the node's host IP directly.
-The default `restricted-v2` blocks `hostNetwork` and all capabilities. PXE
+## Health & observability
 cannot work without host network (CNI overlays don't deliver L2 broadcast
 into pod netns), and we need `NET_BIND_SERVICE` to bind <1024. The custom
 `openpxe-scc` grants exactly those two and nothing else. No raw sockets,
 no privileged mode — proxy-mode DHCP sidesteps the usual requirements.
-### What's on host ports
+| Endpoint | Purpose |
-
+|----------|---------|
-| Port     | Proto | Purpose                         |
+| `/healthz` | Liveness — always 200 if the HTTP stack is up. |
-|----------|-------|---------------------------------|
+| `/readyz` | Readiness — 200 only once iPXE firmware is bundled and the ISO dir is reachable. |
-| 67       | UDP   | DHCP server (proxy replies)     |
+| `/api/status` | Full JSON: version, assets, counts, live settings, share + SMB state. |
-| 69       | UDP   | TFTP                            |
+| `/metrics` | Prometheus text format — DHCP replies by arch, TFTP/HTTP counts, queue gauges, uptime. |
 | 4011     | UDP   | PXE Boot Server discovery       |
 | 80       | TCP   | Web UI + HTTP boot assets       |
 The OpenShift Route only covers 80/TCP. Clients on the PXE network talk to
 the node's host IP directly for UDP.
 ## Windows support
 Enabled by toggling **Windows ISO support** under Settings. The flow:
 1. Upload a stock Microsoft Windows install ISO (vanilla, no pre-processing).
 2. On upload, OpenPXE extracts the ISO and uses `wimlib-imagex` to rewrite
   image index 2 (WinPE) of `sources/boot.wim`. It injects exactly two
   plain-text files:
   - `Windows/System32/winpeshl.ini` — tells WinPE to run `startnet.cmd`.
   - `Windows/System32/startnet.cmd` — runs `wpeinit`, waits for the SMB
     host to be reachable, `net use Z: \\<server>\<share> /user:guest`,
     then `Z:\setup.exe`.
 3. The container's Samba `smbd` serves the extracted install tree on :445.
 4. The client gets chainloaded into wimboot → patched WinPE → Windows Setup
   running off the SMB share. **Every binary the client executes is stock
   Microsoft-signed.**
 ### What we never do
 - Ship drivers — signed, test-signed, or otherwise — that load on the client.
 - Install certificates into the target's trust store or WinPE boot policy.
 - Recommend `bcdedit /set testsigning on` or any equivalent signing-policy
  weakening.
 ### Credit & limitations
 The SMB-based approach is adapted from [Bootimus](https://github.com/garybowers/bootimus)
 (Apache-2.0). Re-implemented in Rust; no code was copied verbatim. Known
 operational constraints inherited from the design:
 - **Port 445 must be directly reachable from PXE clients.** `net use`
  ignores alternate ports. In OpenShift this means `hostPort: 445` on the
  deployment; on a host that already runs SMB it will collide.
 - Windows 10/11 client SKUs are the tested target. Server SKUs untested.
 - Hardware with NICs/storage controllers missing from WinPE's bundled
  drivers will need a driver-pack injection step (not yet implemented).
 ## Queued Deployment
 The coordinated launch flow, end to end:
 1. A client boots and picks **Queued Deployment** in the PXE menu (or falls
   through on timeout with the default `timeout_action`).
 2. The client joins the queue, gets a numbered queue position, and enters a
   long-poll loop (25s per request, auto-renewed).
 3. In the web UI's **Queued Deployment** tab, the operator sees each waiting
   client with its MAC, IP, arch, and position.
 4. The operator selects an image and clicks **Launch for all waiting**.
   The server broadcasts the assignment to every queued client via a
   `tokio::sync::Notify`; each client's next poll returns the boot script
   for the chosen image.
 5. Every client chains the same image at effectively the same moment. The
   queue stays visible until the operator releases entries, which keeps a
   useful audit trail during hardware testing.
 No user-facing iPXE anywhere in this flow. The client only ever runs
 scripts we generate; the operator only interacts with the web UI.
 ## Architecture
-See [`docs/architecture.md`](docs/architecture.md) for the protocol stack,
+Workspace of focused crates — `core`, `dhcp-proxy`, `tftp`, `http-api`, `iso-store`,
-crate layout, and the full decision log.
+`ipxe-assets`, `webui`, and the `openpxe` binary. See
 [`docs/architecture.md`](docs/architecture.md) for the protocol stack, crate layout, and
 the full decision log.
-## Licence
+## License
-MIT OR Apache-2.0.
+Dual-licensed under **MIT OR Apache-2.0** — use whichever fits your project.
@@ -13,6 +13,7 @@ workspace = true
 serde.workspace = true
 serde_json.workspace = true
 toml.workspace = true
 figment.workspace = true
 thiserror.workspace = true
 anyhow.workspace = true
 tracing.workspace = true
@@ -38,6 +39,9 @@ base64.workspace = true
 [dev-dependencies]
 tempfile = "3.12"
 # v0.5.4: figment's `Jail` (hermetic env/file sandbox) for the config
 # loader tests lives behind the `test` feature.
 figment = { workspace = true, features = ["test"] }
 # v0.5.1: generate a throwaway self-signed signing cert/key so SAML
 # verification tests can produce genuinely signed SAMLResponses.
 rcgen = "0.13"
@@ -1,11 +1,23 @@
 //! Operator-controlled branding overrides.
 //!
-//! The browser tab's logo (`/assets/logo.svg`) defaults to the bundled
+//! v0.5.2 splits the single brand mark into **three independent slots**,
-//! rainbow-horizon mark. Operators who deploy OpenPXE behind their own
+//! FleetDM-style:
-//! branding can upload a replacement that lives at
+//!
-//! `<work_dir>/branding/logo.<ext>` and is served in preference to the
+//! * `light` — shown in the WebUI top-left and on the form-login page
-//! bundled SVG when present. Borrowed-from-FleetDM: tenant chrome, same
+//!   when the active theme is light.
-//! product.
+//! * `dark` — same surfaces, when the active theme is dark.
 //! * `client` — the raster painted above the iPXE boot menu entries
 //!   (`/branding/pxe-logo`), i.e. what a PXE client sees on the screen.
 //!
 //! Each slot lives at `<work_dir>/branding/logo-<slot>.<ext>` and is
 //! served in preference to the bundled rainbow-horizon mark when present.
 //! Borrowed-from-FleetDM: tenant chrome, same product.
 //!
 //! Legacy continuity: a pre-v0.5.2 single `logo.<ext>` (recorded under
 //! the old `logo_filename`/`logo_mime` keys) is migrated on first load
 //! into both the `dark` and `client` slots — that preserves the previous
 //! behaviour (one mark fed both the dark WebUI and the PXE screen) until
 //! the operator uploads dedicated variants.
 //!
 //! Storage policy mirrors `HostBindings` / `BootLog`: in-memory cache is
 //! authoritative for the current process, disk is the source of truth on
@@ -35,27 +47,104 @@ pub const ALLOWED_LOGO_MIMES: &[&str] = &[
 /// puts a clear bound on memory + serialization cost.
 pub const MAX_LOGO_BYTES: usize = 2 * 1024 * 1024;
 /// Which branded surface a logo upload targets.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum LogoSlot {
    /// WebUI + form-login page, light theme.
    Light,
    /// WebUI + form-login page, dark theme.
    Dark,
    /// iPXE boot-menu background seen by PXE clients.
    Client,
 }
 impl LogoSlot {
    #[must_use]
    pub fn as_str(self) -> &'static str {
        match self {
            LogoSlot::Light => "light",
            LogoSlot::Dark => "dark",
            LogoSlot::Client => "client",
        }
    }
    /// Parse a slot name from the URL path segment. Case-insensitive.
    #[must_use]
    pub fn parse(s: &str) -> Option<Self> {
        match s.trim().to_ascii_lowercase().as_str() {
            "light" => Some(LogoSlot::Light),
            "dark" => Some(LogoSlot::Dark),
            "client" => Some(LogoSlot::Client),
            _ => None,
        }
    }
 }
 /// One brand-mark slot: a filename (relative to the branding dir) plus
 /// the MIME we cached at upload time so the HTTP layer can set the
 /// Content-Type without re-sniffing.
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 struct Slot {
    #[serde(default, skip_serializing_if = "Option::is_none")]
    filename: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    mime: Option<String>,
 }
 impl Slot {
    fn clear_file(&mut self, dir: &Path) {
        if let Some(name) = self.filename.take() {
            let _ = std::fs::remove_file(dir.join(name));
        }
        self.mime = None;
    }
 }
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 struct Inner {
-    /// File name (relative to the branding dir) for the active logo, if
+    #[serde(default)]
-    /// any. Always under `<work_dir>/branding/`; never an absolute path
+    light: Slot,
-    /// from the operator.
+    #[serde(default)]
-    logo_filename: Option<String>,
+    dark: Slot,
-    /// MIME of the active logo, mirroring `logo_filename`. Cached here
+    #[serde(default)]
-    /// so the HTTP layer can set Content-Type without re-sniffing.
+    client: Slot,
-    logo_mime: Option<String>,
+    /// Monotonic counter bumped on every set/clear (any slot). Surfaces
-    /// Monotonic counter bumped on every set/clear. Surfaces as a
+    /// as a cache-bust token (`/assets/logo.svg?r=<rev>`) so the browser
-    /// cache-bust token (`/assets/logo.svg?r=<rev>`) so the browser
+    /// fetches the new bytes the moment the operator swaps a logo — the
-    /// fetches the new bytes the moment the operator swaps the logo —
+    /// app version alone can't do this since it doesn't change on upload.
-    /// the app version alone can't do this since it doesn't change on
+    /// Persisted so the token stays stable across restarts and keeps
-    /// upload. Persisted so the token stays stable across restarts and
+    /// climbing across multiple swaps.
    /// keeps climbing across multiple swaps.
    #[serde(default)]
    rev: u64,
    // ── Legacy (pre-v0.5.2) single-logo keys ──────────────────────────
    // Read on load for one-way migration into `dark` + `client`, then
    // dropped from the persisted form (skip_serializing_if).
    #[serde(default, skip_serializing_if = "Option::is_none")]
    logo_filename: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    logo_mime: Option<String>,
 }
 impl Inner {
    fn slot(&self, slot: LogoSlot) -> &Slot {
        match slot {
            LogoSlot::Light => &self.light,
            LogoSlot::Dark => &self.dark,
            LogoSlot::Client => &self.client,
        }
    }
    fn slot_mut(&mut self, slot: LogoSlot) -> &mut Slot {
        match slot {
            LogoSlot::Light => &mut self.light,
            LogoSlot::Dark => &mut self.dark,
            LogoSlot::Client => &mut self.client,
        }
    }
 }
 /// In-memory + on-disk override registry. Cheap to clone; locks are
-/// brief. The `branding.json` cache lives alongside the active asset
+/// brief. The `branding.json` cache lives alongside the active assets
 /// inside `<work_dir>/branding/`.
 #[derive(Debug, Clone)]
 pub struct BrandingStore {
@@ -67,7 +156,8 @@ pub struct BrandingStore {
 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.
+    /// cache should never block PXE for the network. Migrates a legacy
    /// single-logo file into the dark + client slots.
    #[must_use]
    pub fn load_or_default(work_dir: &Path) -> Self {
        let dir = work_dir.join("branding");
@@ -75,25 +165,7 @@ impl BrandingStore {
        let mut inner = Inner::default();
        if let Ok(text) = std::fs::read_to_string(&path) {
            match serde_json::from_str::<Inner>(&text) {
-                Ok(parsed) => {
+                Ok(parsed) => inner = 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",
@@ -102,102 +174,242 @@ impl BrandingStore {
                }
            }
        }
-        Self {
+        let store = Self {
            dir: Arc::new(dir),
            inner: Arc::new(RwLock::new(inner)),
        };
        store.migrate_legacy();
        store.prune_missing();
        store
    }
    /// One-way migration: a pre-v0.5.2 `logo.<ext>` becomes the dark +
    /// client slots (the old single mark fed both the dark WebUI and the
    /// PXE screen). Best-effort; failures leave the legacy file in place
    /// rather than blocking startup.
    fn migrate_legacy(&self) {
        let (legacy_name, legacy_mime) = {
            let g = self.inner.read();
            (g.logo_filename.clone(), g.logo_mime.clone())
        };
        let Some(name) = legacy_name else { return };
        let src = self.dir.join(&name);
        if !src.is_file() {
            // Legacy pointer is stale — just drop it.
            let mut g = self.inner.write();
            g.logo_filename = None;
            g.logo_mime = None;
            drop(g);
            self.persist();
            return;
        }
-    }
+        let mime = legacy_mime.unwrap_or_else(|| "image/svg+xml".to_string());
-
+        let ext = ext_for_mime(&mime).unwrap_or("bin");
-    /// Absolute path to the active logo, if one is set and present on
+        if let Ok(bytes) = std::fs::read(&src) {
-    /// disk. `None` means the HTTP layer should serve the bundled SVG.
+            // Seed dark + client only when those slots are still empty so
-    #[must_use]
+            // a re-run (or a manual edit) never clobbers operator intent.
-    pub fn logo_path(&self) -> Option<PathBuf> {
+            let needs_dark = self.inner.read().dark.filename.is_none();
-        let g = self.inner.read();
+            let needs_client = self.inner.read().client.filename.is_none();
-        g.logo_filename.as_deref().map(|n| self.dir.join(n))
+            if needs_dark {
-    }
+                let _ = self.write_slot(LogoSlot::Dark, &mime, ext, &bytes);
-
+            }
-    /// MIME of the active logo, if any. The HTTP layer pairs this with
+            if needs_client {
-    /// the bytes returned by [`Self::logo_path`].
+                let _ = self.write_slot(LogoSlot::Client, &mime, ext, &bytes);
    #[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 _ = std::fs::remove_file(&src);
        {
            let mut g = self.inner.write();
-            g.logo_filename = Some(filename.clone());
+            g.logo_filename = None;
-            g.logo_mime = Some(mime.to_string());
+            g.logo_mime = None;
            g.rev = g.rev.wrapping_add(1);
        }
        self.persist();
        tracing::info!(
            target: "openpxe::branding",
-            file = %filename, mime = %mime, size = bytes.len(),
+            "migrated legacy single logo into dark + client slots"
        );
    }
    /// Drop in-memory slot pointers whose backing file vanished from disk
    /// so the HTTP layer falls back to the bundled mark instead of 500ing.
    fn prune_missing(&self) {
        let mut changed = false;
        {
            let mut g = self.inner.write();
            for slot in [LogoSlot::Light, LogoSlot::Dark, LogoSlot::Client] {
                let present = g
                    .slot(slot)
                    .filename
                    .as_deref()
                    .is_some_and(|n| self.dir.join(n).is_file());
                if !present && g.slot(slot).filename.is_some() {
                    g.slot_mut(slot).filename = None;
                    g.slot_mut(slot).mime = None;
                    changed = true;
                }
            }
        }
        if changed {
            self.persist();
        }
    }
    /// Absolute path to the logo for `slot`, if set and present on disk.
    #[must_use]
    pub fn slot_path(&self, slot: LogoSlot) -> Option<PathBuf> {
        let g = self.inner.read();
        g.slot(slot).filename.as_deref().map(|n| self.dir.join(n))
    }
    /// MIME of the logo for `slot`, if any.
    #[must_use]
    pub fn slot_mime(&self, slot: LogoSlot) -> Option<String> {
        self.inner.read().slot(slot).mime.clone()
    }
    /// Resolve the WebUI logo for a theme, with fallback: light falls
    /// back to dark and vice-versa, so a single uploaded variant still
    /// shows on both themes. Returns `(path, mime)` or `None` (→ bundled).
    #[must_use]
    pub fn web_logo(&self, theme_is_light: bool) -> Option<(PathBuf, String)> {
        let (primary, secondary) = if theme_is_light {
            (LogoSlot::Light, LogoSlot::Dark)
        } else {
            (LogoSlot::Dark, LogoSlot::Light)
        };
        let g = self.inner.read();
        let chosen = if g.slot(primary).filename.is_some() {
            primary
        } else {
            secondary
        };
        let s = g.slot(chosen);
        s.filename.as_deref().map(|n| {
            (
                self.dir.join(n),
                s.mime
                    .clone()
                    .unwrap_or_else(|| "image/svg+xml".to_string()),
            )
        })
    }
    /// Resolve the PXE client logo (no theme fallback — the PXE screen
    /// has a single mark). Returns `(path, mime)` or `None` (→ default
    /// composed background).
    #[must_use]
    pub fn client_logo(&self) -> Option<(PathBuf, String)> {
        let g = self.inner.read();
        let s = &g.client;
        s.filename.as_deref().map(|n| {
            (
                self.dir.join(n),
                s.mime
                    .clone()
                    .unwrap_or_else(|| "application/octet-stream".to_string()),
            )
        })
    }
    /// Replace the logo for `slot`. Returns the chosen on-disk filename so
    /// the caller can echo it back in the API response.
    pub fn set_logo(
        &self,
        slot: LogoSlot,
        mime: &str,
        ext: &str,
        bytes: &[u8],
    ) -> std::io::Result<String> {
        let filename = self.write_slot(slot, mime, ext, bytes)?;
        self.persist();
        tracing::info!(
            target: "openpxe::branding",
            slot = slot.as_str(), file = %filename, mime = %mime, size = bytes.len(),
            "custom logo installed"
        );
        Ok(filename)
    }
-    /// Drop the override and return to the bundled SVG.
+    /// Write the bytes for a slot and update the in-memory pointer + rev,
-    pub fn clear_logo(&self) -> std::io::Result<()> {
+    /// without persisting (the caller decides when to flush). Cleans up
-        let removed = {
+    /// any sibling `logo-<slot>.*` so there's exactly one file per slot.
    fn write_slot(
        &self,
        slot: LogoSlot,
        mime: &str,
        ext: &str,
        bytes: &[u8],
    ) -> std::io::Result<String> {
        std::fs::create_dir_all(self.dir.as_path())?;
        let safe_ext = sanitize_ext(ext);
        let stem = format!("logo-{}", slot.as_str());
        let filename = format!("{stem}.{safe_ext}");
        let final_path = self.dir.join(&filename);
        // Atomic write: tmp -> rename.
        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-<slot>.<otherext>`.
        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(&format!("{stem}.")) && name != filename {
                    let _ = std::fs::remove_file(&p);
                }
            }
        }
        let mut g = self.inner.write();
        let s = g.slot_mut(slot);
        s.filename = Some(filename.clone());
        s.mime = Some(mime.to_string());
        g.rev = g.rev.wrapping_add(1);
        Ok(filename)
    }
    /// Drop the override for `slot` and return to the bundled / default.
    pub fn clear_logo(&self, slot: LogoSlot) -> std::io::Result<()> {
        {
            let mut g = self.inner.write();
-            let removed = g.logo_filename.take();
+            let dir = self.dir.as_path();
-            g.logo_mime = None;
+            g.slot_mut(slot).clear_file(dir);
            g.rev = g.rev.wrapping_add(1);
            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();
        tracing::info!(target: "openpxe::branding", slot = slot.as_str(), "custom logo cleared");
        Ok(())
    }
-    /// Convenience: true if a custom logo is configured. Surfaces on
+    /// True if a custom logo is configured for `slot`.
    /// `/api/status` so the WebUI can show "Custom logo: yes" without
    /// fetching the asset itself.
    #[must_use]
-    pub fn has_logo(&self) -> bool {
+    pub fn has_logo(&self, slot: LogoSlot) -> bool {
-        self.inner.read().logo_filename.is_some()
+        self.inner.read().slot(slot).filename.is_some()
    }
-    /// Cache-bust token for the logo asset URL. Changes on every
+    /// True if either WebUI theme slot has a custom logo — drives the
    /// FleetDM-style full-width brand block (and the `has-custom-logo`
    /// class) on the sidebar + login page.
    #[must_use]
    pub fn has_any_web_logo(&self) -> bool {
        let g = self.inner.read();
        g.light.filename.is_some() || g.dark.filename.is_some()
    }
    /// Presence triple `(light, dark, client)` for the `/api/me` and
    /// `/api/status` bootstrap payloads.
    #[must_use]
    pub fn presence(&self) -> (bool, bool, bool) {
        let g = self.inner.read();
        (
            g.light.filename.is_some(),
            g.dark.filename.is_some(),
            g.client.filename.is_some(),
        )
    }
    /// Cache-bust token for the logo asset URLs. Changes on every
    /// set/clear so `/assets/logo.svg?r=<rev>` resolves to a fresh URL
-    /// whenever the operator swaps the brand mark. Stable otherwise.
+    /// whenever the operator swaps a brand mark. Stable otherwise.
    #[must_use]
    pub fn logo_rev(&self) -> u64 {
        self.inner.read().rev
@@ -267,47 +479,87 @@ mod tests {
    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.has_logo(LogoSlot::Light));
-        assert!(b.logo_path().is_none());
+        assert!(!b.has_logo(LogoSlot::Dark));
-        assert!(b.logo_mime().is_none());
+        assert!(!b.has_logo(LogoSlot::Client));
        assert!(b.web_logo(false).is_none());
        assert!(b.client_logo().is_none());
        assert!(!b.has_any_web_logo());
    }
    #[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();
+        let name = b
-        assert_eq!(name, "logo.png");
+            .set_logo(LogoSlot::Dark, "image/png", "png", b"\x89PNG\r\n\x1a\nfake")
-        assert!(b.has_logo());
+            .unwrap();
-        assert_eq!(b.logo_mime().as_deref(), Some("image/png"));
+        assert_eq!(name, "logo-dark.png");
-        let p = b.logo_path().unwrap();
+        assert!(b.has_logo(LogoSlot::Dark));
        assert_eq!(b.slot_mime(LogoSlot::Dark).as_deref(), Some("image/png"));
        let (p, _) = b.web_logo(false).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!(b2.has_logo(LogoSlot::Dark));
-        assert_eq!(b2.logo_mime().as_deref(), Some("image/png"));
+        assert_eq!(b2.slot_mime(LogoSlot::Dark).as_deref(), Some("image/png"));
        // Clear; the file goes away and has_logo flips off.
-        b2.clear_logo().unwrap();
+        b2.clear_logo(LogoSlot::Dark).unwrap();
-        assert!(!b2.has_logo());
+        assert!(!b2.has_logo(LogoSlot::Dark));
        assert!(!p.exists());
    }
    #[test]
-    fn replacing_logo_removes_old_extension_sibling() {
+    fn web_logo_falls_back_across_themes() {
        // 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();
+        // Only dark uploaded — light theme falls back to it.
-        b.set_logo("image/svg+xml", "svg", br#"<svg xmlns="http://www.w3.org/2000/svg"/>"#).unwrap();
+        b.set_logo(LogoSlot::Dark, "image/png", "png", b"dark")
            .unwrap();
        let (p_light, _) = b.web_logo(true).expect("light falls back to dark");
        assert!(p_light.ends_with("logo-dark.png"));
        // Upload a distinct light — now light theme uses its own.
        b.set_logo(LogoSlot::Light, "image/png", "png", b"light")
            .unwrap();
        let (p_light2, _) = b.web_logo(true).unwrap();
        assert!(p_light2.ends_with("logo-light.png"));
        // Client is independent and still unset.
        assert!(b.client_logo().is_none());
    }
    #[test]
    fn replacing_slot_removes_old_extension_sibling() {
        let dir = tempdir().unwrap();
        let b = BrandingStore::load_or_default(dir.path());
        b.set_logo(
            LogoSlot::Client,
            "image/png",
            "png",
            b"\x89PNG\r\n\x1a\nfake",
        )
        .unwrap();
        b.set_logo(
            LogoSlot::Client,
            "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!(
-        assert!(!entries.iter().any(|n| n == "logo.png"), "stale PNG left over: {entries:?}");
+            entries.iter().any(|n| n == "logo-client.svg"),
            "got {entries:?}"
        );
        assert!(
            !entries.iter().any(|n| n == "logo-client.png"),
            "stale PNG left over: {entries:?}"
        );
    }
    #[test]
@@ -315,54 +567,92 @@ mod tests {
        let dir = tempdir().unwrap();
        let b = BrandingStore::load_or_default(dir.path());
        assert_eq!(b.logo_rev(), 0);
-        b.set_logo("image/png", "png", b"\x89PNG\r\n\x1a\nfake").unwrap();
+        b.set_logo(LogoSlot::Light, "image/png", "png", b"a")
            .unwrap();
        assert_eq!(b.logo_rev(), 1);
-        b.set_logo("image/png", "png", b"\x89PNG\r\n\x1a\nfake2").unwrap();
+        b.set_logo(LogoSlot::Dark, "image/png", "png", b"b")
            .unwrap();
        assert_eq!(b.logo_rev(), 2);
-        b.clear_logo().unwrap();
+        b.clear_logo(LogoSlot::Light).unwrap();
        assert_eq!(b.logo_rev(), 3);
        // Survives a restart.
        drop(b);
        let b2 = BrandingStore::load_or_default(dir.path());
        assert_eq!(b2.logo_rev(), 3);
    }
    #[test]
    fn legacy_single_logo_migrates_to_dark_and_client() {
        // A pre-v0.5.2 branding.json + logo.png migrates on load.
        let dir = tempdir().unwrap();
        let brand_dir = dir.path().join("branding");
        std::fs::create_dir_all(&brand_dir).unwrap();
        std::fs::write(brand_dir.join("logo.png"), b"\x89PNG\r\n\x1a\nlegacy").unwrap();
        // Hand-write the old shape (logo_filename/logo_mime, no slots).
        std::fs::write(
            brand_dir.join("branding.json"),
            br#"{"logo_filename":"logo.png","logo_mime":"image/png","rev":4}"#,
        )
        .unwrap();
        let b = BrandingStore::load_or_default(dir.path());
        assert!(b.has_logo(LogoSlot::Dark), "dark seeded from legacy");
        assert!(b.has_logo(LogoSlot::Client), "client seeded from legacy");
        assert!(!b.has_logo(LogoSlot::Light), "light stays empty");
        // The old logo.png is gone; per-slot files exist.
        assert!(!brand_dir.join("logo.png").exists());
        assert!(brand_dir.join("logo-dark.png").is_file());
        assert!(brand_dir.join("logo-client.png").is_file());
        // rev carried over from the legacy file and advanced as the two
        // slots were seeded (each write bumps it), so it never regresses.
        let migrated_rev = b.logo_rev();
        assert!(
            migrated_rev >= 4,
            "rev should not regress below legacy: {migrated_rev}"
        );
        // And the migration is sticky across a restart (no re-migrate, no
        // further rev churn).
        drop(b);
        let b2 = BrandingStore::load_or_default(dir.path());
        assert!(b2.has_logo(LogoSlot::Dark));
        assert!(b2.has_logo(LogoSlot::Client));
        assert!(!b2.has_logo(LogoSlot::Light));
        assert_eq!(b2.logo_rev(), migrated_rev, "restart must not re-migrate");
    }
    #[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.
+        // branding.json claims a dark slot whose file doesn't exist.
        let inner = Inner {
            logo_filename: Some("logo.png".into()),
            logo_mime: Some("image/png".into()),
            rev: 0,
        };
        std::fs::write(
            brand_dir.join("branding.json"),
-            serde_json::to_vec_pretty(&inner).unwrap(),
+            br#"{"dark":{"filename":"logo-dark.png","mime":"image/png"},"rev":1}"#,
        )
        .unwrap();
        let b = BrandingStore::load_or_default(dir.path());
-        assert!(!b.has_logo(), "should fall back when referenced file is missing");
+        assert!(
            !b.has_logo(LogoSlot::Dark),
            "should fall back when referenced file is missing"
        );
    }
    #[test]
    fn slot_parse_round_trips() {
        assert_eq!(LogoSlot::parse("light"), Some(LogoSlot::Light));
        assert_eq!(LogoSlot::parse("DARK"), Some(LogoSlot::Dark));
        assert_eq!(LogoSlot::parse(" client "), Some(LogoSlot::Client));
        assert_eq!(LogoSlot::parse("nope"), None);
        assert_eq!(LogoSlot::Light.as_str(), "light");
    }
    #[test]
@@ -1,3 +1,5 @@
 use figment::providers::{Env, Format, Serialized, Toml};
 use figment::Figment;
 use serde::{Deserialize, Serialize};
 use std::net::{IpAddr, Ipv4Addr};
 use std::path::{Path, PathBuf};
@@ -56,6 +58,9 @@ pub enum DhcpMode {
    /// Disabled — rely on an external DHCP server that has been manually
    /// configured with `next-server` / `filename`. OpenPXE only serves TFTP
    /// + HTTP in this mode. Useful for home routers that can be pre-set.
    // `off`/`none` are accepted as aliases for backward-compat with the old
    // hand-rolled `apply_env`, which mapped them to Disabled.
    #[serde(alias = "off", alias = "none")]
    Disabled,
 }
@@ -74,6 +79,11 @@ pub struct Paths {
    /// Only used when `settings.windows_enabled = true`. Defaults to
    /// `/var/lib/openpxe/smb` in the container image.
    pub smb_dir: PathBuf,
    /// v0.5.2: directory holding uploaded unattended-install answer files
    /// (Kickstart / Preseed / Autoinstall / Windows answer files). Kept
    /// separate from `iso_dir` so answer files never appear in the ISO
    /// listing or the PXE menu. Defaults to `/var/lib/openpxe/unattended`.
    pub unattended_dir: PathBuf,
 }
 impl Default for ServerConfig {
@@ -109,6 +119,7 @@ impl Default for Paths {
            ipxe_dir: PathBuf::from("/usr/share/openpxe/ipxe"),
            wimboot_path: None,
            smb_dir: PathBuf::from("/var/lib/openpxe/smb"),
            unattended_dir: PathBuf::from("/var/lib/openpxe/unattended"),
        }
    }
 }
@@ -123,48 +134,162 @@ impl Config {
        toml::from_str(&text).map_err(|e| crate::Error::Config(e.to_string()))
    }
-    /// Apply environment variable overrides. Env var names follow the pattern
+    /// Load configuration with layered precedence (v0.5.4, via `figment`):
-    /// `OPENPXE_<SECTION>_<FIELD>`, uppercase. Unknown vars are ignored.
+    /// built-in [`Default`] → optional TOML file → `OPENPXE_*` environment
-    /// Call this after loading the TOML file so env takes precedence.
+    /// (highest). Replaces the old `from_toml_file` + `apply_env` two-step
-    pub fn apply_env(&mut self) {
+    /// and now covers **every** field automatically (the previous hand-rolled
-        if let Ok(v) = std::env::var("OPENPXE_HTTP_PORT") {
+    /// mapping silently skipped `unattended_dir`, the bind addresses, etc.).
-            if let Ok(p) = v.parse() {
+    ///
-                self.server.http_port = p;
+    /// The env layer preserves the historical flat names
    /// (`OPENPXE_HTTP_PORT`, `OPENPXE_ISO_DIR`, …) so existing deployments
    /// (the Unraid template, `entrypoint.sh`) keep working unchanged, and
    /// additionally accepts the explicit nested form
    /// `OPENPXE_<SECTION>__<FIELD>` (double underscore).
    pub fn load(path: Option<&Path>) -> crate::Result<Self> {
        let mut fig = Figment::from(Serialized::defaults(Config::default()));
        if let Some(p) = path {
            if p.exists() {
                fig = fig.merge(Toml::file(p));
            }
        }
-        if let Ok(v) = std::env::var("OPENPXE_TFTP_PORT") {
+        fig = fig.merge(env_provider());
-            if let Ok(p) = v.parse() {
+        fig.extract()
-                self.server.tftp_port = p;
+            .map_err(|e| crate::Error::Config(e.to_string()))
-            }
+    }
-        }
+}
-        if let Ok(v) = std::env::var("OPENPXE_DHCP_PORT") {
+
-            if let Ok(p) = v.parse() {
+/// The `OPENPXE_*` environment provider. Maps the historical flat variable
-                self.network.dhcp_port = p;
+/// names onto the nested [`Config`] fields, and also accepts the explicit
-            }
+/// `OPENPXE_SECTION__FIELD` nested form. Keys that match nothing (e.g.
-        }
+/// `OPENPXE_CONFIG`, `OPENPXE_UID` from the entrypoint) become stray
-        if let Ok(v) = std::env::var("OPENPXE_PUBLIC_IP") {
+/// top-level keys that `Config` ignores on extract.
-            if let Ok(ip) = v.parse() {
+fn env_provider() -> Env {
-                self.server.public_ip = Some(ip);
+    Env::prefixed("OPENPXE_")
-            }
+        .map(|key| {
-        }
+            // Lowercase so the match is robust regardless of how the OS
-        if let Ok(v) = std::env::var("OPENPXE_DHCP_MODE") {
+            // reports the var's case.
-            self.network.dhcp_mode = match v.to_ascii_lowercase().as_str() {
+            let k = key.as_str().to_ascii_lowercase();
-                "proxy" => DhcpMode::Proxy,
+            let mapped = match k.as_str() {
-                "disabled" | "off" | "none" => DhcpMode::Disabled,
+                "http_port" => "server.http_port",
-                _ => self.network.dhcp_mode,
+                "http_bind" => "server.http_bind",
                "tftp_port" => "server.tftp_port",
                "tftp_bind" => "server.tftp_bind",
                "public_ip" => "server.public_ip",
                "dhcp_port" => "network.dhcp_port",
                "dhcp_bind" => "network.dhcp_bind",
                "dhcp_mode" => "network.dhcp_mode",
                "pxe_port" => "network.pxe_port",
                "iso_dir" => "paths.iso_dir",
                "work_dir" => "paths.work_dir",
                "ipxe_dir" => "paths.ipxe_dir",
                "smb_dir" => "paths.smb_dir",
                "wimboot_path" => "paths.wimboot_path",
                "unattended_dir" => "paths.unattended_dir",
                // Unknown: support the explicit nested form
                // (OPENPXE_SERVER__HTTP_PORT). `replace` is a no-op for the
                // already-handled flat names above.
                other => return other.replace("__", ".").into(),
            };
-        }
+            mapped.into()
-        if let Ok(v) = std::env::var("OPENPXE_ISO_DIR") {
+        })
-            self.paths.iso_dir = PathBuf::from(v);
+        .split(".")
-        }
+}
-        if let Ok(v) = std::env::var("OPENPXE_WORK_DIR") {
+
-            self.paths.work_dir = PathBuf::from(v);
+#[cfg(test)]
-        }
+mod tests {
-        if let Ok(v) = std::env::var("OPENPXE_IPXE_DIR") {
+    // figment's `Jail::expect_with` closure returns `Result<(), figment::Error>`
-            self.paths.ipxe_dir = PathBuf::from(v);
+    // and `figment::Error` is large; that's the library's API, not ours.
-        }
+    #![allow(clippy::result_large_err)]
-        if let Ok(v) = std::env::var("OPENPXE_SMB_DIR") {
+    use super::*;
-            self.paths.smb_dir = PathBuf::from(v);
+
-        }
+    #[test]
    fn defaults_load_when_no_file_or_env() {
        figment::Jail::expect_with(|_jail| {
            let c = Config::load(None).expect("load defaults");
            assert_eq!(c.server.http_port, 80);
            assert_eq!(c.network.dhcp_mode, DhcpMode::Proxy);
            assert_eq!(c.paths.iso_dir, PathBuf::from("/var/lib/openpxe/isos"));
            Ok(())
        });
    }
    #[test]
    fn legacy_flat_env_vars_still_apply() {
        figment::Jail::expect_with(|jail| {
            jail.set_env("OPENPXE_HTTP_PORT", "8123");
            jail.set_env("OPENPXE_TFTP_PORT", "6900");
            jail.set_env("OPENPXE_DHCP_PORT", "6767");
            jail.set_env("OPENPXE_PXE_PORT", "4444");
            jail.set_env("OPENPXE_PUBLIC_IP", "10.20.30.40");
            jail.set_env("OPENPXE_DHCP_MODE", "disabled");
            jail.set_env("OPENPXE_ISO_DIR", "/data/isos");
            jail.set_env("OPENPXE_WORK_DIR", "/data/work");
            jail.set_env("OPENPXE_IPXE_DIR", "/data/ipxe");
            jail.set_env("OPENPXE_SMB_DIR", "/data/smb");
            // v0.5.4: a field the old apply_env never covered.
            jail.set_env("OPENPXE_UNATTENDED_DIR", "/data/unattended");
            let c = Config::load(None).expect("load with env");
            assert_eq!(c.server.http_port, 8123);
            assert_eq!(c.server.tftp_port, 6900);
            assert_eq!(c.network.dhcp_port, 6767);
            assert_eq!(c.network.pxe_port, 4444);
            assert_eq!(c.server.public_ip, Some("10.20.30.40".parse().unwrap()));
            assert_eq!(c.network.dhcp_mode, DhcpMode::Disabled);
            assert_eq!(c.paths.iso_dir, PathBuf::from("/data/isos"));
            assert_eq!(c.paths.work_dir, PathBuf::from("/data/work"));
            assert_eq!(c.paths.ipxe_dir, PathBuf::from("/data/ipxe"));
            assert_eq!(c.paths.smb_dir, PathBuf::from("/data/smb"));
            assert_eq!(c.paths.unattended_dir, PathBuf::from("/data/unattended"));
            Ok(())
        });
    }
    #[test]
    fn dhcp_mode_off_alias_maps_to_disabled() {
        figment::Jail::expect_with(|jail| {
            jail.set_env("OPENPXE_DHCP_MODE", "off");
            let c = Config::load(None).unwrap();
            assert_eq!(c.network.dhcp_mode, DhcpMode::Disabled);
            Ok(())
        });
    }
    #[test]
    fn nested_double_underscore_form_also_works() {
        figment::Jail::expect_with(|jail| {
            jail.set_env("OPENPXE_SERVER__HTTP_PORT", "9001");
            let c = Config::load(None).unwrap();
            assert_eq!(c.server.http_port, 9001);
            Ok(())
        });
    }
    #[test]
    fn env_overrides_toml_file() {
        figment::Jail::expect_with(|jail| {
            jail.create_file(
                "openpxe.toml",
                "[server]\nhttp_port = 8080\n[paths]\niso_dir = \"/from/toml\"\n",
            )?;
            jail.set_env("OPENPXE_HTTP_PORT", "8443");
            let c = Config::load(Some(Path::new("openpxe.toml"))).unwrap();
            // env wins over TOML…
            assert_eq!(c.server.http_port, 8443);
            // …but TOML-only values still apply.
            assert_eq!(c.paths.iso_dir, PathBuf::from("/from/toml"));
            Ok(())
        });
    }
    #[test]
    fn unrelated_openpxe_env_vars_are_ignored() {
        figment::Jail::expect_with(|jail| {
            // entrypoint.sh sets these; they must not break config load.
            jail.set_env("OPENPXE_UID", "10001");
            jail.set_env("OPENPXE_CONFIG", "/etc/openpxe.toml");
            let c = Config::load(None).expect("stray vars ignored");
            assert_eq!(c.server.http_port, 80);
            Ok(())
        });
    }
 }
@@ -0,0 +1,65 @@
 //! Small, dependency-free encoding helpers shared across crates.
 //!
 //! v0.5.4: `pct_encode` and `xml_escape` were duplicated in the SAML
 //! modules and the HTTP layer; they live here now. They're deliberately
 //! hand-rolled rather than pulling in `percent-encoding` / `url`: the
 //! unreserved set below is exactly the RFC 3986 set that iPXE's
 //! `:uristring` modifier and the SAML HTTP-Redirect binding both expect,
 //! and a general-purpose URL crate escapes a different set.
 use std::fmt::Write as _;
 /// Percent-encode `s` per RFC 3986: the unreserved set
 /// (`A-Z` `a-z` `0-9` `-` `_` `.` `~`) passes through unchanged; every
 /// other byte becomes `%XX` (uppercase hex).
 #[must_use]
 pub fn pct_encode(s: &str) -> String {
    let mut out = String::with_capacity(s.len());
    for b in s.bytes() {
        match b {
            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'_' | b'.' | b'~' => {
                out.push(b as char);
            }
            _ => {
                let _ = write!(out, "%{b:02X}");
            }
        }
    }
    out
 }
 /// Escape the five XML predefined entities so `s` is safe inside element
 /// text or a double-quoted attribute value.
 #[must_use]
 pub fn xml_escape(s: &str) -> String {
    let mut out = String::with_capacity(s.len());
    for c in s.chars() {
        match c {
            '&' => out.push_str("&amp;"),
            '<' => out.push_str("&lt;"),
            '>' => out.push_str("&gt;"),
            '"' => out.push_str("&quot;"),
            '\'' => out.push_str("&apos;"),
            _ => out.push(c),
        }
    }
    out
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn pct_encode_unreserved_passthrough_else_hex() {
        assert_eq!(pct_encode("node-7.lab_1~"), "node-7.lab_1~");
        assert_eq!(pct_encode("aa:bb cc/?&="), "aa%3Abb%20cc%2F%3F%26%3D");
        assert_eq!(pct_encode(""), "");
    }
    #[test]
    fn xml_escape_all_five_entities() {
        assert_eq!(xml_escape("a&b<c>\"d'e"), "a&amp;b&lt;c&gt;&quot;d&apos;e");
        assert_eq!(xml_escape("plain text"), "plain text");
    }
 }
@@ -21,6 +21,8 @@ use std::path::PathBuf;
 use std::sync::Arc;
 use time::OffsetDateTime;
 use crate::profile::DeployProfile;
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct HostBinding {
    /// Lowercase, colon-separated MAC (e.g. `aa:bb:cc:dd:ee:ff`). The
@@ -35,6 +37,11 @@ pub struct HostBinding {
    /// `"rack-3 spine"`). Empty if unset.
    #[serde(default)]
    pub label: String,
    /// v0.5.2: optional unattended-install hints (auto hostname / IP /
    /// answer-file id). Flattened into the binding JSON so pre-v0.5.2
    /// `hosts.json` files (which lack these keys) still deserialize.
    #[serde(default, flatten)]
    pub profile: DeployProfile,
    #[serde(with = "time::serde::rfc3339")]
    pub created_at: OffsetDateTime,
    #[serde(with = "time::serde::rfc3339")]
@@ -94,20 +101,31 @@ impl HostBindings {
    }
    /// Insert or update. Returns the resulting binding (with timestamps).
-    pub fn upsert(&self, mac: &str, target: &str, label: &str) -> HostBinding {
+    /// The `profile` carries optional unattended-install hints (v0.5.2);
    /// pass `DeployProfile::default()` for a plain pin.
    pub fn upsert(
        &self,
        mac: &str,
        target: &str,
        label: &str,
        profile: DeployProfile,
    ) -> HostBinding {
        let key = normalize_mac(mac);
        let now = OffsetDateTime::now_utc();
        let profile = profile.normalized();
        let binding = {
            let mut g = self.inner.write();
            let entry = g.by_mac.entry(key.clone()).or_insert_with(|| HostBinding {
                mac: key.clone(),
                target: target.to_string(),
                label: label.to_string(),
                profile: profile.clone(),
                created_at: now,
                updated_at: now,
            });
            entry.target = target.to_string();
            entry.label = label.to_string();
            entry.profile = profile.clone();
            entry.updated_at = now;
            entry.clone()
        };
@@ -179,6 +197,10 @@ mod tests {
    use super::*;
    use tempfile::tempdir;
    fn np() -> DeployProfile {
        DeployProfile::default()
    }
    #[test]
    fn normalize_handles_case_and_dashes() {
        assert_eq!(normalize_mac("AA:BB:CC:DD:EE:FF"), "aa:bb:cc:dd:ee:ff");
@@ -191,7 +213,12 @@ mod tests {
        let dir = tempdir().unwrap();
        let h = HostBindings::load_or_default(dir.path());
        assert!(h.is_empty());
-        h.upsert("AA:BB:CC:00:00:01", "ubuntu-24-04-linux", "rack-3 spine");
+        h.upsert(
            "AA:BB:CC:00:00:01",
            "ubuntu-24-04-linux",
            "rack-3 spine",
            np(),
        );
        let found = h.lookup("aa-bb-cc-00-00-01").expect("lookup");
        assert_eq!(found.target, "ubuntu-24-04-linux");
        assert_eq!(found.label, "rack-3 spine");
@@ -202,8 +229,8 @@ mod tests {
    fn upsert_replaces_existing_target() {
        let dir = tempdir().unwrap();
        let h = HostBindings::load_or_default(dir.path());
-        h.upsert("aa:bb:cc:00:00:01", "old-target", "label1");
+        h.upsert("aa:bb:cc:00:00:01", "old-target", "label1", np());
-        h.upsert("aa:bb:cc:00:00:01", "new-target", "label2");
+        h.upsert("aa:bb:cc:00:00:01", "new-target", "label2", np());
        assert_eq!(h.len(), 1);
        let b = h.lookup("aa:bb:cc:00:00:01").unwrap();
        assert_eq!(b.target, "new-target");
@@ -214,7 +241,7 @@ mod tests {
    fn remove_works_and_reports_outcome() {
        let dir = tempdir().unwrap();
        let h = HostBindings::load_or_default(dir.path());
-        h.upsert("aa:bb:cc:00:00:01", "x", "");
+        h.upsert("aa:bb:cc:00:00:01", "x", "", np());
        assert!(h.remove("AA:BB:CC:00:00:01"));
        assert!(!h.remove("aa:bb:cc:00:00:01")); // already gone
        assert!(h.is_empty());
@@ -224,11 +251,44 @@ mod tests {
    fn round_trip_persists_to_disk() {
        let dir = tempdir().unwrap();
        let h = HostBindings::load_or_default(dir.path());
-        h.upsert("aa:bb:cc:00:00:01", "ubuntu-linux", "rack-3");
+        h.upsert("aa:bb:cc:00:00:01", "ubuntu-linux", "rack-3", np());
-        h.upsert("aa:bb:cc:00:00:02", "_local", "tom-laptop");
+        h.upsert("aa:bb:cc:00:00:02", "_local", "tom-laptop", np());
        drop(h);
        let h2 = HostBindings::load_or_default(dir.path());
        assert_eq!(h2.len(), 2);
        assert_eq!(h2.lookup("aa:bb:cc:00:00:02").unwrap().target, "_local");
    }
    #[test]
    fn profile_round_trips_to_disk() {
        let dir = tempdir().unwrap();
        let h = HostBindings::load_or_default(dir.path());
        let prof = DeployProfile {
            auto_hostname: Some("node-7".into()),
            auto_ip: Some("10.0.0.7".into()),
            unattended_file: Some("ubuntu-ks".into()),
        };
        h.upsert("aa:bb:cc:00:00:09", "ubuntu-linux", "lab", prof);
        drop(h);
        let h2 = HostBindings::load_or_default(dir.path());
        let b = h2.lookup("aa:bb:cc:00:00:09").unwrap();
        assert_eq!(b.profile.auto_hostname.as_deref(), Some("node-7"));
        assert_eq!(b.profile.auto_ip.as_deref(), Some("10.0.0.7"));
        assert_eq!(b.profile.unattended_file.as_deref(), Some("ubuntu-ks"));
    }
    #[test]
    fn legacy_hosts_json_without_profile_still_loads() {
        // A pre-v0.5.2 hosts.json has no profile keys at all.
        let dir = tempdir().unwrap();
        std::fs::write(
            dir.path().join("hosts.json"),
            br#"[{"mac":"aa:bb:cc:00:00:01","target":"_local","label":"old","created_at":"2024-01-01T00:00:00Z","updated_at":"2024-01-01T00:00:00Z"}]"#,
        )
        .unwrap();
        let h = HostBindings::load_or_default(dir.path());
        let b = h.lookup("aa:bb:cc:00:00:01").unwrap();
        assert_eq!(b.target, "_local");
        assert!(b.profile.is_empty());
    }
 }
@@ -8,11 +8,13 @@ pub mod boot_log;
 pub mod branding;
 pub mod client;
 pub mod config;
 pub mod encoding;
 pub mod error;
 pub mod host_bindings;
 pub mod log_bus;
 pub mod metrics;
 pub mod notify;
 pub mod profile;
 pub mod queue;
 pub mod saml;
 pub mod settings;
@@ -22,7 +24,7 @@ pub mod wol;
 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 branding::{ext_for_mime, BrandingStore, LogoSlot, ALLOWED_LOGO_MIMES, MAX_LOGO_BYTES};
 pub use client::{ClientEvent, ClientRegistry, ClientSnapshot};
 pub use config::{Config, DhcpMode, NetworkConfig, Paths, ServerConfig};
 pub use error::{Error, Result};
@@ -30,7 +32,8 @@ pub use host_bindings::{normalize_mac, HostBinding, HostBindings};
 pub use log_bus::{LogBus, LogBusLayer, LogLine};
 pub use metrics::{HttpRoute, Metrics};
 pub use notify::{NotifyConfig, NotifyKind, NotifyStore};
 pub use profile::DeployProfile;
 pub use queue::{DeploymentQueue, QueueEntry};
 pub use saml::{IdpMetadata, SamlError, SpParams, VerifiedPrincipal, VerifiedResponse};
 pub use settings::{Settings, SettingsStore, TimeoutAction};
-pub use sso::{SsoConfig, SsoStore};
+pub use sso::{SsoConfig, SsoLoginInfo, SsoStore};
@@ -0,0 +1,122 @@
 //! Per-host deployment profile.
 //!
 //! v0.5.2: a small, optional bundle of "what should this machine do when
 //! it images" attached to either a pinned host binding ([`crate::HostBinding`])
 //! or a queued device ([`crate::QueueEntry`]). All three fields are
 //! optional and independent:
 //!
 //! * `auto_hostname` — substituted into the served unattended answer file
 //!   (`{{HOSTNAME}}`) so the installer sets the machine name.
 //! * `auto_ip` — substituted as `{{IP}}`. OpenPXE is a DHCP **proxy** and
 //!   does not hand out leases, so this is applied by the installer as a
 //!   static-network directive inside the answer file, not by DHCP.
 //! * `unattended_file` — the id of an uploaded file in the unattended
 //!   store (Kickstart / Preseed / Autoinstall / Windows answer file). When
 //!   set, the boot chain injects the appropriate kernel argument so the
 //!   install runs unattended.
 use serde::{Deserialize, Serialize};
 /// Optional deployment hints carried on a host pin or a queue entry.
 ///
 /// The fields are flattened into `HostBinding` / `QueueEntry` on the wire
 /// (so existing JSON stays compatible via `#[serde(default)]`); this type
 /// is the in-code bundle the boot chain consumes.
 #[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
 pub struct DeployProfile {
    /// Hostname to set on the imaged machine (`{{HOSTNAME}}`). Empty/None
    /// leaves the installer default.
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub auto_hostname: Option<String>,
    /// Static IPv4/IPv6 the installer should configure (`{{IP}}`). Stored
    /// as a free-form string — validated lightly at the HTTP layer.
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub auto_ip: Option<String>,
    /// Id of an uploaded file in the unattended store. Empty/None means
    /// "no unattended install — boot interactively".
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub unattended_file: Option<String>,
 }
 /// Cap on the stored hostname / IP strings — generous for any real value
 /// but bounds what an operator can stuff into the JSON.
 pub const MAX_PROFILE_FIELD_LEN: usize = 255;
 impl DeployProfile {
    /// True when nothing is set — lets call sites skip work entirely.
    #[must_use]
    pub fn is_empty(&self) -> bool {
        self.auto_hostname.is_none() && self.auto_ip.is_none() && self.unattended_file.is_none()
    }
    /// True when an unattended file is selected (drives boot-chain injection).
    #[must_use]
    pub fn has_unattended(&self) -> bool {
        self.unattended_file
            .as_deref()
            .is_some_and(|s| !s.trim().is_empty())
    }
    /// Normalise: trim every field and collapse empty strings to `None`
    /// so persisted JSON never carries `""` for an unset value.
    #[must_use]
    pub fn normalized(mut self) -> Self {
        fn clean(v: Option<String>) -> Option<String> {
            v.map(|s| s.trim().to_string())
                .filter(|s| !s.is_empty())
                .map(|s| s.chars().take(MAX_PROFILE_FIELD_LEN).collect())
        }
        self.auto_hostname = clean(self.auto_hostname);
        self.auto_ip = clean(self.auto_ip);
        self.unattended_file = clean(self.unattended_file);
        self
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn empty_profile_is_empty() {
        assert!(DeployProfile::default().is_empty());
        assert!(!DeployProfile::default().has_unattended());
    }
    #[test]
    fn normalize_trims_and_nulls_empty() {
        let p = DeployProfile {
            auto_hostname: Some("  node-7  ".into()),
            auto_ip: Some("   ".into()),
            unattended_file: Some(String::new()),
        }
        .normalized();
        assert_eq!(p.auto_hostname.as_deref(), Some("node-7"));
        assert_eq!(p.auto_ip, None);
        assert_eq!(p.unattended_file, None);
        assert!(!p.is_empty());
    }
    #[test]
    fn has_unattended_detects_real_id() {
        let p = DeployProfile {
            unattended_file: Some("ubuntu-ks".into()),
            ..Default::default()
        };
        assert!(p.has_unattended());
    }
    #[test]
    fn long_field_is_capped() {
        let long = "a".repeat(1000);
        let p = DeployProfile {
            auto_hostname: Some(long),
            ..Default::default()
        }
        .normalized();
        assert_eq!(
            p.auto_hostname.as_deref().map(str::len),
            Some(MAX_PROFILE_FIELD_LEN)
        );
    }
 }
@@ -21,6 +21,7 @@ use time::OffsetDateTime;
 use tokio::sync::Notify;
 use uuid::Uuid;
 use crate::profile::DeployProfile;
 use crate::ClientArch;
 /// Per-client queue state visible to the WebUI.
@@ -37,6 +38,11 @@ pub struct QueueEntry {
    #[serde(with = "time::serde::rfc3339")]
    pub last_poll_at: OffsetDateTime,
    pub assigned_target: Option<String>,
    /// v0.5.2: optional per-device deployment profile set via the queue
    /// "Profile" button (auto hostname / IP / unattended file). Flattened
    /// so the JSON stays flat alongside the other queue fields.
    #[serde(default, flatten)]
    pub profile: DeployProfile,
 }
 #[derive(Debug)]
@@ -49,6 +55,7 @@ struct QueueEntryInner {
    joined_at: OffsetDateTime,
    last_poll_at: OffsetDateTime,
    assigned_target: Option<String>,
    profile: DeployProfile,
    /// Broadcast primitive that wakes the long-poll as soon as an
    /// assignment lands — no polling on our side, no sleep-loops.
    notify: Arc<Notify>,
@@ -65,6 +72,7 @@ impl QueueEntryInner {
            joined_at: self.joined_at,
            last_poll_at: self.last_poll_at,
            assigned_target: self.assigned_target.clone(),
            profile: self.profile.clone(),
        }
    }
 }
@@ -110,6 +118,7 @@ impl DeploymentQueue {
            joined_at: now,
            last_poll_at: now,
            assigned_target: None,
            profile: DeployProfile::default(),
            notify: Arc::new(Notify::new()),
        };
        let snap = inner.snapshot();
@@ -133,6 +142,29 @@ impl DeploymentQueue {
        Some(g.snapshot())
    }
    /// Operator sets (or clears) the deployment profile for a queued
    /// device via the WebUI "Profile" button. Returns the updated
    /// snapshot, or `None` if the entry has since been released.
    pub fn set_profile(&self, entry_id: &str, profile: DeployProfile) -> Option<QueueEntry> {
        let mut guard = self.inner.write();
        let g = guard.get_mut(entry_id)?;
        g.profile = profile.normalized();
        Some(g.snapshot())
    }
    /// Look up the deployment profile for a queued MAC, if any. Used by
    /// the boot chain to inject an unattended file / template the
    /// hostname + IP when an assigned device chains to its target.
    #[must_use]
    pub fn profile_for_mac(&self, mac: &str) -> Option<DeployProfile> {
        let guard = self.inner.read();
        guard
            .values()
            .find(|g| g.mac == mac)
            .map(|g| g.profile.clone())
            .filter(|p| !p.is_empty())
    }
    /// Operator assigns an ISO entry (boot_entry id) to one or more clients.
    /// Returns the number of queue entries that were updated. Entries not in the
    /// queue are silently skipped.
@@ -5,7 +5,6 @@
 //! appended as the `SAMLRequest` query parameter. AuthnRequests are sent
 //! unsigned in this release (the IdP must not require client signatures).
 use std::fmt::Write as _;
 use std::io::Write as _;
 use base64::Engine;
@@ -15,6 +14,7 @@ use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
 use super::{SamlError, SpParams};
 use crate::encoding::{pct_encode, xml_escape};
 const NS_PROTOCOL: &str = "urn:oasis:names:tc:SAML:2.0:protocol";
 const NS_ASSERTION: &str = "urn:oasis:names:tc:SAML:2.0:assertion";
@@ -79,37 +79,8 @@ fn deflate_base64(xml: &str) -> Result<String, SamlError> {
    Ok(base64::engine::general_purpose::STANDARD.encode(compressed))
 }
-/// Percent-encode a query-string component (RFC 3986 unreserved set passes
+// `pct_encode` + `xml_escape` now live in `openpxe_core::encoding` (v0.5.4)
-/// through; everything else is `%XX`).
+// — imported above.
 fn pct_encode(s: &str) -> String {
    let mut out = String::with_capacity(s.len() * 3);
    for b in s.bytes() {
        match b {
            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'_' | b'.' | b'~' => {
                out.push(b as char);
            }
            _ => {
                let _ = write!(out, "%{b:02X}");
            }
        }
    }
    out
 }
 fn xml_escape(s: &str) -> String {
    let mut out = String::with_capacity(s.len());
    for c in s.chars() {
        match c {
            '&' => out.push_str("&amp;"),
            '<' => out.push_str("&lt;"),
            '>' => out.push_str("&gt;"),
            '"' => out.push_str("&quot;"),
            '\'' => out.push_str("&apos;"),
            _ => out.push(c),
        }
    }
    out
 }
 #[cfg(test)]
 mod tests {
@@ -7,6 +7,7 @@
 use base64::Engine;
 use super::{SamlError, SpParams};
 use crate::encoding::xml_escape;
 /// SAML 2.0 binding URIs.
 pub const BINDING_REDIRECT: &str = "urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect";
@@ -148,21 +149,7 @@ fn node_text(n: &roxmltree::Node<'_, '_>) -> String {
        .collect()
 }
-/// Minimal XML attribute/text escaping for the values we interpolate.
+// `xml_escape` now lives in `openpxe_core::encoding` (v0.5.4) — imported above.
 fn xml_escape(s: &str) -> String {
    let mut out = String::with_capacity(s.len());
    for c in s.chars() {
        match c {
            '&' => out.push_str("&amp;"),
            '<' => out.push_str("&lt;"),
            '>' => out.push_str("&gt;"),
            '"' => out.push_str("&quot;"),
            '\'' => out.push_str("&apos;"),
            _ => out.push(c),
        }
    }
    out
 }
 #[cfg(test)]
 mod tests {
@@ -73,6 +73,23 @@ impl SsoConfig {
    }
 }
 /// The minimal, non-sensitive slice of the SSO config that the **pre-auth**
 /// login screen needs to render the "Sign in with …" button. Carries only
 /// the display affordances — never the metadata XML/URL or entity ID, which
 /// stay behind the auth-gated `/api/sso`. Served as part of the public
 /// `/api/me` so the button renders reliably whether or not anyone is signed
 /// in (v0.5.9: fixes the button vanishing because `/api/sso` 401s pre-auth).
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct SsoLoginInfo {
    /// True only when SSO is *usable* (enabled AND a metadata source is
    /// present) — i.e. clicking the button will actually reach an IdP.
    pub enabled: bool,
    /// Button label, e.g. "STC AD". Empty falls back to "SSO" in the UI.
    pub idp_name: String,
    /// Optional IdP logo rendered on the button. Empty = no image.
    pub idp_logo_url: String,
 }
 /// In-memory + on-disk SSO settings registry.
 #[derive(Debug, Clone)]
 pub struct SsoStore {
@@ -111,6 +128,19 @@ impl SsoStore {
        self.inner.read().clone()
    }
    /// Public, non-sensitive descriptor for the login screen. Safe to
    /// expose pre-auth — it's exactly what the "Sign in with …" button
    /// keys off, with no metadata/entity-ID leakage. v0.5.9.
    #[must_use]
    pub fn login_info(&self) -> SsoLoginInfo {
        let cfg = self.inner.read();
        SsoLoginInfo {
            enabled: cfg.is_usable(),
            idp_name: cfg.idp_name.clone(),
            idp_logo_url: cfg.idp_logo_url.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,
@@ -33,8 +33,6 @@ thiserror.workspace = true
 anyhow.workspace = true
 bytes.workspace = true
 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
@@ -61,3 +59,9 @@ image = { version = "0.25", default-features = false, features = ["png"] }
 # replay, and IdP-initiated-gating flows exercise real signatures.
 rcgen = "0.13"
 bergshamra = { workspace = true }
 # v0.5.4: snapshot the generated iPXE menu so any unintended drift (a
 # dropped line, reordered item) is caught and reviewed, not silently shipped.
 insta = "1.40"
 # v0.5.4: stand up a mock HTTP server to exercise the SAML metadata-URL
 # fetch path (previously untested because it did a real network GET).
 wiremock = "0.6"
@@ -317,8 +317,14 @@ pub async fn api_me(State(state): State<AppState>, headers: axum::http::HeaderMa
    // screens can render the FleetDM-style full-width custom logo (and
    // cache-bust it) without an extra round trip. `/api/me` is public,
    // and the logo asset is public, so this leaks nothing sensitive.
-    let has_custom_logo = state.branding.has_logo();
+    let has_custom_logo = state.branding.has_any_web_logo();
    let logo_rev = state.branding.logo_rev();
    // v0.5.9: ship the non-sensitive SSO descriptor with every /api/me so
    // the pre-auth login screen can render the "Sign in with …" button
    // reliably. Previously the button keyed off the auth-gated /api/sso,
    // which 401s when logged out — the button only survived on a stale
    // in-memory config and vanished on any fresh login-page load.
    let sso = state.sso.login_info();
    if !state.admin.is_configured() {
        return (
            StatusCode::OK,
@@ -327,6 +333,7 @@ pub async fn api_me(State(state): State<AppState>, headers: axum::http::HeaderMa
                "authenticated": false,
                "has_custom_logo": has_custom_logo,
                "logo_rev": logo_rev,
                "sso": sso,
            })),
        )
            .into_response();
@@ -343,6 +350,7 @@ pub async fn api_me(State(state): State<AppState>, headers: axum::http::HeaderMa
                "session_user": u,
                "has_custom_logo": has_custom_logo,
                "logo_rev": logo_rev,
                "sso": sso,
            })),
        )
            .into_response(),
@@ -353,6 +361,7 @@ pub async fn api_me(State(state): State<AppState>, headers: axum::http::HeaderMa
                "authenticated": false,
                "has_custom_logo": has_custom_logo,
                "logo_rev": logo_rev,
                "sso": sso,
            })),
        )
            .into_response(),
@@ -0,0 +1,92 @@
 //! Uniform HTTP error mapping for the API layer (v0.5.4).
 //!
 //! Before this, ~40 handlers in `app.rs` hand-wrote
 //! `match … { Err(e) => (StatusCode::…, format!("{e}")).into_response() }`,
 //! and the `openpxe_core::Error` → status mapping drifted between them
 //! (e.g. `Invalid` → 400 in most places, 404 in one). [`AppError`] wraps
 //! `openpxe_core::Error` so a handler can return `Result<T, AppError>` and
 //! `?` its way out, getting one consistent status + body. The body stays
 //! plain-text (matching the previous `(StatusCode, String)` responses) so
 //! existing clients and tests see no shape change; 5xx detail is logged
 //! and returned verbatim exactly as before.
 //!
 //! Handlers with *intentional* domain-specific statuses (e.g. a duplicate
 //! share → 409, a still-open chunked upload → 409) keep their explicit
 //! returns — `AppError` is for the common case, not a straitjacket.
 use axum::http::StatusCode;
 use axum::response::{IntoResponse, Response};
 use openpxe_core::Error as CoreError;
 /// Newtype over [`openpxe_core::Error`] with a uniform [`IntoResponse`].
 #[derive(Debug)]
 pub struct AppError(pub CoreError);
 impl From<CoreError> for AppError {
    fn from(e: CoreError) -> Self {
        AppError(e)
    }
 }
 impl From<std::io::Error> for AppError {
    fn from(e: std::io::Error) -> Self {
        AppError(CoreError::Io(e))
    }
 }
 impl AppError {
    /// The HTTP status this error maps to. Public so handlers (and tests)
    /// can reason about the mapping in one place.
    #[must_use]
    pub fn status(&self) -> StatusCode {
        match self.0 {
            CoreError::NotFound(_) => StatusCode::NOT_FOUND,
            CoreError::Invalid(_) => StatusCode::BAD_REQUEST,
            CoreError::Config(_) | CoreError::Io(_) | CoreError::Other(_) => {
                StatusCode::INTERNAL_SERVER_ERROR
            }
        }
    }
 }
 impl IntoResponse for AppError {
    fn into_response(self) -> Response {
        let status = self.status();
        // Match the prior hand-written responses: the 4xx arms returned the
        // bare inner message (not the `Display` prefix), so a UI showing
        // `await r.text()` reads "metadata too long", not "invalid input:
        // metadata too long". 5xx keeps the full `Display` string.
        let body = match &self.0 {
            CoreError::Invalid(m) | CoreError::NotFound(m) => m.clone(),
            other => other.to_string(),
        };
        if status.is_server_error() {
            // Log the full detail server-side; the body still carries it
            // (unchanged from the prior `format!("{e}")` behaviour), but the
            // log line is what an operator greps for.
            tracing::error!(target: "openpxe::http", error = %self.0, "request failed");
        }
        (status, body).into_response()
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn status_mapping_is_consistent() {
        assert_eq!(
            AppError(CoreError::NotFound("x".into())).status(),
            StatusCode::NOT_FOUND
        );
        assert_eq!(
            AppError(CoreError::Invalid("x".into())).status(),
            StatusCode::BAD_REQUEST
        );
        assert_eq!(
            AppError(CoreError::Config("x".into())).status(),
            StatusCode::INTERNAL_SERVER_ERROR
        );
    }
 }
@@ -61,16 +61,24 @@ pub fn render_menu(isos: &[IsoMeta], settings: &Settings, base_url: &str) -> Str
    // returns a full-screen 1024×768 PNG now — the operator's logo on a
    // dark field, or a default OpenPXE mark when none is uploaded. The
    // `--top 290` reserves the top band (where the logo paints) so the
-    // menu text lands below it. On an iPXE build *with* `IMAGE_PNG` +
+    // menu text lands below it.
-    // `CONSOLE_FRAMEBUFFER` (our x86_64 UEFI binaries, built from source
+    //
-    // — see deploy/docker/Dockerfile) this paints the background and
+    // v0.5.7: gate the whole command behind `iseq ${platform} efi`.
-    // overlays the menu. On a build *without* PNG support (the fetched
+    // `console --picture` needs IMAGE_PNG + CONSOLE_FRAMEBUFFER, which
-    // BIOS/i386/arm64 binaries) the whole `console --picture …` command
+    // only our from-source UEFI binaries carry (x86_64/arm64 UEFI — see
-    // fails and the `|| console` resets to a clean full-screen text
+    // deploy/docker/Dockerfile). The fetched BIOS `undionly.kpxe` has
-    // menu. Either way there's no ASCII placeholder anymore.
+    // neither, and on legacy BIOS the `--picture` attempt misbehaves
    // *before* the trailing `|| console` fallback can recover (it tries
    // to set a framebuffer mode the BIOS console can't honour). Guarding
    // on platform means BIOS clients never issue the command at all —
    // they drop straight to the plain text menu — while UEFI clients
    // still get the graphical background. A PNG-less UEFI build (e.g. the
    // upstream i386-efi baseline) still falls back gracefully through the
    // same `|| console`. No operator toggle needed; mixed BIOS+UEFI
    // fleets each get the right treatment automatically.
    let _ = writeln!(
        s,
-        "console --picture {base}/branding/pxe-logo --top 290 || console"
+        "iseq ${{platform}} efi && console --picture {base}/branding/pxe-logo --top 290 || console"
    );
    // Map iPXE's ${{buildarch}} + ${{platform}} into the human form the
    // user asked for (e.g. "x86 BIOS", "x86_64 UEFI", "arm64 UEFI").
@@ -101,12 +109,13 @@ pub fn render_menu(isos: &[IsoMeta], settings: &Settings, base_url: &str) -> Str
    } else {
        let _ = writeln!(s, "item --gap -- (no Linux ISOs uploaded)");
    }
-    if settings.windows_enabled && has_family(isos, is_windows_family) {
+    // v0.5.8: Windows just works — no Settings toggle. Show the Windows
    // installers submenu whenever a Windows ISO is present; entries boot
    // via HTTP sanboot of the raw ISO, so no SMB/extraction is required.
    if has_family(isos, is_windows_family) {
        let _ = writeln!(s, "item windows          Windows Installers  >");
    } else if settings.windows_enabled {
        let _ = writeln!(s, "item --gap -- (no Windows ISOs uploaded)");
    } else {
-        let _ = writeln!(s, "item --gap -- (Windows support disabled in Settings)");
+        let _ = writeln!(s, "item --gap -- (no Windows ISOs uploaded)");
    }
    let _ = writeln!(
        s,
@@ -460,8 +469,21 @@ pub fn render_queue_entry(base_url: &str) -> String {
 }
 /// Per-entry boot script (same as Phase 1, with extra_kernel_args appended).
 ///
 /// `unattended_args` (v0.5.2) carries the per-host unattended-install
 /// kernel arguments (`inst.ks=…`, `auto=true … url=…`, or
 /// `autoinstall ds=nocloud-net;s=…`) when the requesting MAC has a
 /// deployment profile with an answer file selected. It's appended to the
 /// Linux kernel command line after the operator's global extra args, and
 /// ignored for Windows (wimboot) / sanboot entries which don't take a
 /// kernel cmdline.
 #[must_use]
-pub fn render_entry(entry: &BootEntry, settings: &Settings, base_url: &str) -> String {
+pub fn render_entry(
    entry: &BootEntry,
    settings: &Settings,
    base_url: &str,
    unattended_args: Option<&str>,
 ) -> String {
    let mut s = String::new();
    let base = base_url.trim_end_matches('/');
    let _ = writeln!(s, "#!ipxe");
@@ -477,6 +499,12 @@ pub fn render_entry(entry: &BootEntry, settings: &Settings, base_url: &str) -> S
                cmdline.push(' ');
                cmdline.push_str(settings.extra_kernel_args.trim());
            }
            if let Some(extra) = unattended_args {
                if !extra.trim().is_empty() {
                    cmdline.push(' ');
                    cmdline.push_str(extra.trim());
                }
            }
            let _ = writeln!(s, "kernel {base}/{kernel_url} {cmdline}");
            for u in initrd_urls {
                let _ = writeln!(s, "initrd {base}/{u}");
@@ -674,6 +702,22 @@ mod password_tests {
        assert!(s.contains("arm64 UEFI"), "{s}");
    }
    // v0.5.4: a full snapshot of the rendered top menu. The fragment
    // `assert!`s above check specific invariants; this catches *any* other
    // drift (a reordered item, a dropped line, changed spacing) so it's
    // reviewed deliberately. The OpenPXE version is filtered out so the
    // snapshot doesn't churn on every release bump.
    #[test]
    fn render_menu_snapshot() {
        // Normalize the compile-time version so the snapshot doesn't churn
        // on every release bump (no insta `filters` feature needed).
        let rendered = render_menu(&[], &Settings::default(), "http://10.0.0.5").replace(
            concat!("OpenPXE v", env!("CARGO_PKG_VERSION")),
            "OpenPXE vX.Y.Z",
        );
        insta::assert_snapshot!(rendered);
    }
    #[test]
    fn generated_scripts_do_not_emit_bare_or_trailing_fallbacks() {
        let settings = Settings::default();
@@ -15,6 +15,7 @@
 pub mod app;
 pub mod auth;
 pub mod error;
 pub mod ipxe_script;
 pub mod iso_fs;
 pub mod log_stream;
@@ -336,3 +336,35 @@ fn redirect_with_session(location: &str, session: &str) -> Response {
            IntoResponse::into_response,
        )
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    use wiremock::matchers::method;
    use wiremock::{Mock, MockServer, ResponseTemplate};
    // v0.5.4: exercise the SAML metadata-URL fetch against a mock server —
    // previously this path did a real network GET and had no coverage.
    #[tokio::test]
    async fn fetch_metadata_returns_body_on_200() {
        let server = MockServer::start().await;
        let xml = "<EntityDescriptor>idp</EntityDescriptor>";
        Mock::given(method("GET"))
            .respond_with(ResponseTemplate::new(200).set_body_string(xml))
            .mount(&server)
            .await;
        let got = fetch_metadata(&server.uri()).await.expect("fetch ok");
        assert_eq!(got, xml);
    }
    #[tokio::test]
    async fn fetch_metadata_errors_on_non_2xx() {
        let server = MockServer::start().await;
        Mock::given(method("GET"))
            .respond_with(ResponseTemplate::new(503))
            .mount(&server)
            .await;
        let err = fetch_metadata(&server.uri()).await.unwrap_err();
        assert!(matches!(err, SamlError::Metadata(_)), "got {err:?}");
    }
 }
@@ -0,0 +1,36 @@
 ---
 source: crates/http-api/src/ipxe_script.rs
 expression: rendered
 ---
 #!ipxe
 # OpenPXE top-level menu - auto-generated, do not edit
 set base-url http://10.0.0.5
 set esc:hex 1b
 set cls ${esc:string}[2J
 iseq ${platform} efi && console --picture http://10.0.0.5/branding/pxe-logo --top 290 || console
 set arch-label ${buildarch} ${platform}
 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
 :menu
 menu OpenPXE - network boot menu
 item --gap
 item --gap -- ------------------------- Default -------------------------
 item local            Boot from Local HDD
 item --gap -- ----------------------- Installers -----------------------
 item --gap -- (no Linux ISOs uploaded)
 item --gap -- (no Windows ISOs uploaded)
 item --gap -- -------------------------- Tools --------------------------
 item tools            Tools  >
 item --gap -- ---------------------- Queued Deployment ---------------------
 item queue            Queued Deployment  (join queue)
 item --gap
 item --key x exit     Exit iPXE
 item --gap
 item --gap --                 OpenPXE vX.Y.Z  -  ${arch-label}
 choose --default queue --timeout 600000 target || goto menu
 iseq ${target} local   && chain http://10.0.0.5/boot/_local.ipxe        || goto menu
 iseq ${target} linux   && chain http://10.0.0.5/boot/_linux_menu.ipxe   || goto menu
 iseq ${target} windows && chain http://10.0.0.5/boot/_windows_menu.ipxe || goto menu
 iseq ${target} tools   && chain http://10.0.0.5/boot/_tools_menu.ipxe   || goto menu
 iseq ${target} queue   && chain http://10.0.0.5/boot/_queue.ipxe         || goto menu
 iseq ${target} exit    && exit                                 || goto menu
 goto menu
@@ -5,7 +5,9 @@ use openpxe_core::{
    AdminStore, BootLog, BrandingStore, ClientRegistry, DeploymentQueue, HostBindings, LogBus,
    Metrics, NotifyStore, SettingsStore, SsoStore,
 };
-use openpxe_iso_store::{IsoStore, NfsShareManager, SmbManager, SmbShareManager};
+use openpxe_iso_store::{
    IsoStore, NfsShareManager, SftpShareManager, SmbManager, SmbShareManager, UnattendedStore,
 };
 use std::sync::Arc;
 use time::OffsetDateTime;
@@ -67,6 +69,18 @@ pub struct AppState {
    /// In-process (no subprocess); supports HTTP Range requests on
    /// NFS-sourced ISOs because NFSv3 READ3 takes an explicit offset.
    pub nfs_shares: NfsShareManager,
    /// v0.5.5: SFTP-over-SSH share manager — pure-Rust userspace
    /// consumer via `russh` + `russh-sftp` (ring backend, no OpenSSL).
    /// Ships alongside SMB/NFS as the third remote-library protocol.
    /// In-process (no subprocess, no kernel mount); supports HTTP Range
    /// requests because SFTP opens a seekable file handle. Authenticates
    /// the server's SSH host key on a trust-on-first-use basis.
    pub sftp_shares: SftpShareManager,
    /// v0.5.2: uploaded unattended-install answer files (Kickstart /
    /// Preseed / Autoinstall / Windows answer files). Served on demand to
    /// booting clients with per-host hostname/IP/MAC templating; lives in
    /// its own directory, never the ISO listing or PXE menu.
    pub unattended: UnattendedStore,
    /// Browser chunked upload state. Multipart uploads still go straight
    /// through `IsoStore`, but the UI uses sessions so large ISO transfers
    /// can show deterministic progress and leave visible partial files.
@@ -96,6 +96,8 @@ async fn dispatch(state: &AppState, argv: &[String]) -> Result<String, String> {
        "share" | "smb-share" => smb_share_command(state, tail).await,
        "smb" => smb_command(state, tail).await,
        "nfs" => nfs_share_command(state, tail).await,
        // v0.5.5: SFTP-over-SSH remote shares (in-process russh client).
        "sftp" => sftp_share_command(state, tail).await,
        "log" => log_command(state, tail),
        "whoami" => Ok("operator".to_string()),
        "echo" => Ok(tail.join(" ")),
@@ -118,17 +120,21 @@ fn status_text(s: &AppState) -> String {
    // v0.4.67: NFSv3 sources too.
    let nfs_shares = s.nfs_shares.list();
    let nfs_reachable = nfs_shares.iter().filter(|m| m.reachable).count();
    // v0.5.5: SFTP-over-SSH sources too.
    let sftp_shares = s.sftp_shares.list();
    let sftp_reachable = sftp_shares.iter().filter(|m| m.reachable).count();
    format!(
        "OpenPXE {ver}\n\
         base url:     {base}\n\
         interface:    {nic}\n\
         uptime:       {up}\n\
-         isos:         {n_isos}  (local: {n_local}, smb: {n_smb}, nfs: {n_nfs})\n\
+         isos:         {n_isos}  (local: {n_local}, smb: {n_smb}, nfs: {n_nfs}, sftp: {n_sftp})\n\
         clients:      {n_clients}\n\
         queue:        {n_entries}\n\
         smb server:   {smb}\n\
         smb shares:   {n_smb_total} configured ({n_smb_active} reachable)\n\
-         nfs shares:   {n_nfs_total} configured ({n_nfs_active} reachable)\n",
+         nfs shares:   {n_nfs_total} configured ({n_nfs_active} reachable)\n\
         sftp shares:  {n_sftp_total} configured ({n_sftp_active} reachable)\n",
        ver = env!("CARGO_PKG_VERSION"),
        base = s.public_base_url,
        nic = if s.nic_name.is_empty() {
@@ -150,6 +156,10 @@ fn status_text(s: &AppState) -> String {
            .iter()
            .filter(|i| matches!(i.source, openpxe_iso_store::IsoSource::Nfs { .. }))
            .count(),
        n_sftp = isos
            .iter()
            .filter(|i| matches!(i.source, openpxe_iso_store::IsoSource::Sftp { .. }))
            .count(),
        n_clients = clients.len(),
        n_entries = queue_entries.len(),
        smb = smb.map_or_else(|| "(disabled)".into(), |s| format!("{s:?}")),
@@ -157,6 +167,8 @@ fn status_text(s: &AppState) -> String {
        n_smb_active = smb_reachable,
        n_nfs_total = nfs_shares.len(),
        n_nfs_active = nfs_reachable,
        n_sftp_total = sftp_shares.len(),
        n_sftp_active = sftp_reachable,
    )
 }
@@ -177,6 +189,8 @@ fn isos_text(s: &AppState) -> String {
            openpxe_iso_store::IsoSource::Smb { share_id, .. } => format!("smb:{share_id}"),
            // v0.4.67: NFSv3 via in-process nfs3_client.
            openpxe_iso_store::IsoSource::Nfs { share_id, .. } => format!("nfs:{share_id}"),
            // v0.5.5: SFTP-over-SSH via in-process russh.
            openpxe_iso_store::IsoSource::Sftp { share_id, .. } => format!("sftp:{share_id}"),
        };
        let _ = writeln!(
            out,
@@ -321,11 +335,9 @@ async fn smb_share_command(s: &AppState, args: &[String]) -> Result<String, Stri
        }
        Some("add") => {
            // share add //server/share [guest|user:password]
-            let target = args
+            let target = args.get(1).ok_or_else(|| {
-                .get(1)
+                "usage: share add //server/share [guest|user:password]".to_string()
-                .ok_or_else(|| {
+            })?;
                    "usage: share add //server/share [guest|user:password]".to_string()
                })?;
            // Accept either `//server/share` (UNC-style) or
            // `server:share` (shorter to type).
            let stripped = target.trim_start_matches('/').trim_start_matches('\\');
@@ -401,11 +413,7 @@ async fn nfs_share_command(s: &AppState, args: &[String]) -> Result<String, Stri
                return Ok("(no NFS shares configured)".into());
            }
            let mut out = String::new();
-            let _ = writeln!(
+            let _ = writeln!(out, "{:<24} {:<7} {:<6} TARGET", "ID", "STATUS", "ISOS");
                out,
                "{:<24} {:<7} {:<6} TARGET",
                "ID", "STATUS", "ISOS"
            );
            for m in shares {
                let status = if m.reachable { "ok" } else { "down" };
                let _ = writeln!(
@@ -476,6 +484,104 @@ async fn nfs_share_command(s: &AppState, args: &[String]) -> Result<String, Stri
    }
 }
 // ── sftp (v0.5.5) ────────────────────────────────────────────────────────
 //
 // Parallel to nfs_share_command. The terminal `add` only supports
 // password auth — pasting a multiline PEM private key through the
 // terminal is impractical, so key-based shares are added via the WebUI.
 async fn sftp_share_command(s: &AppState, args: &[String]) -> Result<String, String> {
    match args.first().map(String::as_str) {
        None | Some("list") => {
            let shares = s.sftp_shares.list();
            if shares.is_empty() {
                return Ok("(no SFTP shares configured)".into());
            }
            let mut out = String::new();
            let _ = writeln!(out, "{:<24} {:<7} {:<6} TARGET", "ID", "STATUS", "ISOS");
            for m in shares {
                let status = if m.reachable { "ok" } else { "down" };
                let _ = writeln!(
                    out,
                    "{:<24} {:<7} {:<6} {}@{}:{}",
                    truncate(&m.id, 24),
                    status,
                    m.iso_count,
                    m.username,
                    m.server,
                    m.export,
                );
                if let Some(e) = m.last_error {
                    let _ = writeln!(out, "    error: {e}");
                }
                if let Some(h) = m.last_hint {
                    let _ = writeln!(out, "    hint:  {h}");
                }
            }
            Ok(out)
        }
        Some("add") => {
            // sftp add <user>@<server>:<export> <password> [port]
            let target = args.get(1).ok_or_else(|| {
                "usage: sftp add <user>@<server>:<export> <password> [port] \
                 (key auth: use the WebUI)"
                    .to_string()
            })?;
            let password = args
                .get(2)
                .ok_or_else(|| "a password is required (key auth: use the WebUI)".to_string())?;
            let (user, rest) = target
                .split_once('@')
                .ok_or_else(|| "target must be 'user@server:/export'".to_string())?;
            let (server, export) = rest
                .split_once(':')
                .ok_or_else(|| "target must be 'user@server:/export'".to_string())?;
            let port = args.get(3).and_then(|s| s.parse::<u16>().ok());
            let req = openpxe_iso_store::SftpAddRequest {
                server: server.to_string(),
                export: export.to_string(),
                username: Some(user.to_string()),
                port,
                password: Some(password.clone()),
                private_key: None,
                passphrase: None,
            };
            match s.sftp_shares.add(req).await {
                Ok(m) => Ok(format!("added {} ({} isos)", m.id, m.iso_count)),
                Err(e) => {
                    let mut out = format!("add failed: {}", e.error);
                    if let Some(h) = e.hint {
                        out.push_str("\nhint: ");
                        out.push_str(&h);
                    }
                    Err(out)
                }
            }
        }
        Some("remove") => {
            let id = args
                .get(1)
                .ok_or_else(|| "usage: sftp remove <id>".to_string())?;
            match s.sftp_shares.remove(id).await {
                Ok(()) => Ok(format!("removed {id}")),
                Err(e) => Err(format!("remove failed: {e}")),
            }
        }
        Some("scan") => {
            let id = args
                .get(1)
                .ok_or_else(|| "usage: sftp scan <id>".to_string())?;
            match s.sftp_shares.rescan(id).await {
                Ok(n) => Ok(format!("re-scanned {id}: {n} isos")),
                Err(e) => Err(format!("scan failed: {e}")),
            }
        }
        Some(other) => Err(format!(
            "unknown sftp subcommand: {other}\ntry: sftp [list|add|remove|scan]"
        )),
    }
 }
 // ── smb ────────────────────────────────────────────────────────────────
 #[allow(clippy::unused_async)]
@@ -622,6 +728,11 @@ OpenPXE terminal — available commands:
  nfs remove <id>                   forget an NFS share
  nfs scan <id>                     re-list an NFS share for new ISOs
  sftp list                         list configured SFTP-over-SSH shares
  sftp add <user>@<srv>:<export> <pass> [port]   add an SFTP share (key auth: WebUI)
  sftp remove <id>                  forget an SFTP share
  sftp scan <id>                    re-list an SFTP share for new ISOs
  smb status                        outbound Samba state (Windows install media)
  smb start | stop | reload         control the outbound smbd
@@ -9,6 +9,7 @@
 use bytes::Bytes;
 use openpxe_core::{Error, Result};
 use openpxe_iso_store::{IsoMeta, IsoStore, UploadHandle};
 use parking_lot::RwLock;
 use serde::Serialize;
 use std::collections::HashMap;
 use std::sync::Arc;
@@ -19,7 +20,11 @@ const DEFAULT_CHUNK_SIZE: u64 = 8 * 1024 * 1024;
 #[derive(Clone, Default)]
 pub struct UploadSessions {
-    inner: Arc<Mutex<HashMap<String, Arc<Mutex<UploadSession>>>>>,
+    // v0.5.4: the registry is a sync `parking_lot::RwLock` — it's only ever
    // briefly read/inserted/removed to look up a session, never held across
    // an `.await`. The per-session lock below stays a `tokio::sync::Mutex`
    // because `write_chunk` / `finish` are awaited while it's held.
    inner: Arc<RwLock<HashMap<String, Arc<Mutex<UploadSession>>>>>,
 }
 struct UploadSession {
@@ -67,8 +72,7 @@ impl UploadSessions {
        };
        self.inner
-            .lock()
+            .write()
            .await
            .insert(upload_id.clone(), Arc::new(Mutex::new(session)));
        Ok(UploadStarted {
@@ -88,7 +92,7 @@ impl UploadSessions {
        chunk: Bytes,
        complete: bool,
    ) -> Result<UploadAppend> {
-        let Some(session_lock) = self.inner.lock().await.get(upload_id).cloned() else {
+        let Some(session_lock) = self.inner.read().get(upload_id).cloned() else {
            return Err(Error::Invalid(format!("no such upload '{upload_id}'")));
        };
@@ -119,7 +123,7 @@ impl UploadSessions {
        if let Err(e) = handle.write_chunk(&chunk).await {
            let handle = session.handle.take();
            drop(session);
-            self.inner.lock().await.remove(upload_id);
+            self.inner.write().remove(upload_id);
            if let Some(handle) = handle {
                let _ = handle.abort().await;
            }
@@ -156,11 +160,11 @@ impl UploadSessions {
        let meta = match handle.finish(store).await {
            Ok(meta) => meta,
            Err(e) => {
-                self.inner.lock().await.remove(upload_id);
+                self.inner.write().remove(upload_id);
                return Err(e);
            }
        };
-        self.inner.lock().await.remove(upload_id);
+        self.inner.write().remove(upload_id);
        Ok(UploadAppend::Complete {
            offset: new_offset,
            iso: Box::new(meta),
@@ -168,7 +172,7 @@ impl UploadSessions {
    }
    pub async fn abort(&self, upload_id: &str) -> Result<()> {
-        let Some(session_lock) = self.inner.lock().await.remove(upload_id) else {
+        let Some(session_lock) = self.inner.write().remove(upload_id) else {
            return Err(Error::Invalid(format!("no such upload '{upload_id}'")));
        };
        let mut session = session_lock.lock().await;
@@ -14,7 +14,7 @@ use axum::body::Body;
 use axum::http::{header, Request, StatusCode};
 use openpxe_core::{ClientRegistry, DeploymentQueue, HostBindings, LogBus, Metrics, SettingsStore};
 use openpxe_http_api::{build_router, AppState};
-use openpxe_iso_store::{IsoStore, NfsShareManager, SmbShareManager};
+use openpxe_iso_store::{IsoStore, NfsShareManager, SftpShareManager, SmbShareManager};
 use tempfile::tempdir;
 use tower::ServiceExt;
@@ -96,6 +96,9 @@ async fn build_state() -> (AppState, tempfile::TempDir) {
    let settings = SettingsStore::load_or_default(dir.path());
    let smb_shares = SmbShareManager::new(dir.path(), iso_store.clone());
    let nfs_shares = NfsShareManager::new(dir.path(), iso_store.clone());
    let sftp_shares = SftpShareManager::new(dir.path(), iso_store.clone());
    let unattended = openpxe_iso_store::UnattendedStore::new(dir.path().join("unattended"));
    unattended.ensure_dir().await.unwrap();
    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());
@@ -122,6 +125,8 @@ async fn build_state() -> (AppState, tempfile::TempDir) {
        smb: None,
        smb_shares,
        nfs_shares,
        sftp_shares,
        unattended,
        uploads: openpxe_http_api::uploads::UploadSessions::default(),
        log_bus,
        started_at: time::OffsetDateTime::now_utc(),
@@ -688,7 +693,7 @@ async fn log_recent_returns_buffered_lines() {
 }
 #[tokio::test]
-async fn windows_iso_renders_clean_wimboot_script_with_no_trust_store_writes() {
+async fn windows_iso_renders_clean_sanboot_script_with_no_trust_store_writes() {
    // Synthesize an ISO with a Windows volume label + the sources/boot.wim
    // sentinel so introspection labels it WindowsPe with has_boot_wim.
    let mut buf = vec![0u8; 32 * 2048];
@@ -758,38 +763,35 @@ async fn windows_iso_renders_clean_wimboot_script_with_no_trust_store_writes() {
        "introspection should detect sources/boot.wim sentinel"
    );
-    // The boot entry should be a wimboot kind with the canonical 5-file
+    // v0.5.8: Windows boots via iPXE HTTP sanboot of the raw ISO — no SMB,
-    // chain documented in the LinusTechTips iPXE-Windows guide.
+    // no extraction, no in-ISO file serving, no operator toggle. The boot
    // entry is a `san_boot_iso` kind pointing at the raw image.
    let entry = &meta["boot_entries"][0];
-    assert_eq!(entry["kind"]["kind"], "wimboot");
+    assert_eq!(entry["kind"]["kind"], "san_boot_iso");
-    let files = entry["kind"]["files"].as_array().unwrap();
+    let iso_url = entry["kind"]["iso_url"].as_str().unwrap();
-    let names: Vec<&str> = files.iter().map(|f| f[0].as_str().unwrap()).collect();
+    assert!(
-    assert!(names.contains(&"bootmgr"));
+        std::path::Path::new(iso_url)
-    assert!(names.contains(&"bootmgr.efi"));
+            .extension()
-    assert!(names.contains(&"bcd"));
+            .is_some_and(|e| e.eq_ignore_ascii_case("iso")),
-    assert!(names.contains(&"boot.sdi"));
+        "sanboot should target the raw ISO, got: {iso_url}"
-    assert!(names.contains(&"boot.wim"));
+    );
    // Render the entry script and verify:
-    //   1. It uses wimboot
+    //   1. It uses `sanboot` against the raw ISO over HTTP
-    //   2. All 5 files are referenced via `initrd --name`
+    //   2. NO trust-store / driver / testsigning operations slip in
    //   3. NO trust-store / driver / testsigning operations slip in
    let entry_id = entry["id"].as_str().unwrap();
    let url = format!("/boot/{entry_id}.ipxe");
    let (s, body) = get(&app, &url).await;
    assert_eq!(s, StatusCode::OK);
    let script = String::from_utf8(body).unwrap();
    assert!(script.contains("kernel "), "missing kernel line:\n{script}");
    assert!(
-        script.contains("ipxe/wimboot"),
+        script.contains("sanboot"),
-        "missing wimboot loader:\n{script}"
+        "missing sanboot line:\n{script}"
    );
    assert!(
        script.contains(&format!("/{iso_url}")),
        "sanboot should reference the raw ISO url:\n{script}"
    );
    for tag in ["bootmgr", "bootmgr.efi", "bcd", "boot.sdi", "boot.wim"] {
        assert!(
            script.contains(&format!("initrd --name {tag}")),
            "missing `initrd --name {tag}` line:\n{script}"
        );
    }
    // Hard guarantees we never want to see in any client-facing script.
    let lower = script.to_lowercase();
    for forbidden in [
@@ -1488,7 +1490,8 @@ async fn api_docs_lists_known_endpoints() {
        "/api/isos",
        "/api/isos/:id/category",
        "/api/storage/disk",
-        "/api/branding/logo",
+        "/api/branding/logo/:slot",
        "/api/unattended",
        "/api/boot-log",
        "/metrics",
    ] {
@@ -1509,7 +1512,7 @@ async fn branding_clear_when_no_logo_is_no_content() {
        .oneshot(
            Request::builder()
                .method("DELETE")
-                .uri("/api/branding/logo")
+                .uri("/api/branding/logo/dark")
                .body(Body::empty())
                .unwrap(),
        )
@@ -1532,6 +1535,60 @@ async fn status_exposes_custom_logo_flag() {
    );
 }
 /// v0.5.4 guard: the typed `StatusResponse` must keep every key the WebUI
 /// (`crates/webui/src/app.js`) reads off `/api/status`. If a refactor drops
 /// or renames one, the dashboard silently breaks — this catches it.
 #[tokio::test]
 async fn status_contract_has_all_ui_keys() {
    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();
    for key in [
        "version",
        "public_base_url",
        "iso_count",
        "client_count",
        "queue_count",
        "imaging_count",
        "waiting_count",
        "ipxe_assets",
        "settings",
        "smb_share_count",
        "smb_share_reachable",
        "nfs_share_count",
        "nfs_share_reachable",
        "host_bindings",
        "custom_logo",
        "branding",
        "unattended_count",
        "uptime_secs",
        "started_at",
        "nic_name",
        "subnet_mask",
        "gateway",
    ] {
        assert!(
            v.get(key).is_some(),
            "/api/status missing UI key '{key}': {v}"
        );
    }
    // Nested branding presence the Settings tab reads.
    for key in ["light", "dark", "client", "rev"] {
        assert!(
            v["branding"].get(key).is_some(),
            "/api/status branding missing '{key}': {v}"
        );
    }
    // started_at must remain an RFC3339 string (the UI does fmtUptime on
    // uptime_secs but renders started_at as text), not a serialized struct.
    assert!(
        v["started_at"].is_string(),
        "started_at should serialize as a string: {v}"
    );
 }
 async fn put_json(router: &axum::Router, path: &str, body: &str) -> (StatusCode, Vec<u8>) {
    let res = router
        .clone()
@@ -1950,6 +2007,7 @@ async fn pxe_background_falls_back_to_default_for_svg_upload() {
    state
        .branding
        .set_logo(
            openpxe_core::LogoSlot::Client,
            "image/svg+xml",
            "svg",
            br#"<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 8 8"/>"#,
@@ -1985,7 +2043,10 @@ async fn pxe_logo_composes_to_1024x768_png() {
    // 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();
+    state
        .branding
        .set_logo(openpxe_core::LogoSlot::Client, "image/png", "png", &png)
        .unwrap();
    let app = build_router(state);
    let res = app
        .clone()
@@ -2025,7 +2086,10 @@ async fn pxe_logo_endpoint_is_public_after_admin_setup() {
    // auth allowlist gates `/api/*` only.
    let (state, _dir) = build_state().await;
    let png = tiny_png();
-    state.branding.set_logo("image/png", "png", &png).unwrap();
+    state
        .branding
        .set_logo(openpxe_core::LogoSlot::Client, "image/png", "png", &png)
        .unwrap();
    let app = build_router(state);
    // Configure an admin so the middleware kicks in.
    let (s, _, _) = post_collect(
@@ -2040,6 +2104,201 @@ async fn pxe_logo_endpoint_is_public_after_admin_setup() {
    assert_eq!(s, StatusCode::OK);
 }
 // ─── v0.5.2: unattended files + deployment profiles ─────────────────────────
 async fn post_multipart(
    router: &axum::Router,
    path: &str,
    ct: &str,
    body: Vec<u8>,
 ) -> (StatusCode, Vec<u8>) {
    let res = router
        .clone()
        .oneshot(
            Request::builder()
                .method("POST")
                .uri(path)
                .header("content-type", ct)
                .body(Body::from(body))
                .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 unattended_upload_list_serve_and_template() {
    let (state, _dir) = build_state().await;
    let app = build_router(state);
    let ks = b"install\nnetwork --hostname={{HOSTNAME}} --ip={{IP}}\n%packages\n@core\n%end\n";
    let (ct, body) = multipart_iso_body("rocky.ks", ks);
    let (s, b) = post_multipart(&app, "/api/unattended", &ct, body).await;
    assert_eq!(s, StatusCode::CREATED, "{}", String::from_utf8_lossy(&b));
    let m: serde_json::Value = serde_json::from_slice(&b).unwrap();
    assert_eq!(m["kind"], "kickstart");
    let id = m["id"].as_str().unwrap().to_string();
    let (s, b) = get(&app, "/api/unattended").await;
    assert_eq!(s, StatusCode::OK);
    let v: serde_json::Value = serde_json::from_slice(&b).unwrap();
    assert_eq!(v["files"].as_array().unwrap().len(), 1);
    // Public serve substitutes the query tokens.
    let (s, b) = get(
        &app,
        &format!("/unattended/{id}?hostname=node7&ip=10.0.0.7"),
    )
    .await;
    assert_eq!(s, StatusCode::OK);
    let text = String::from_utf8_lossy(&b);
    assert!(text.contains("--hostname=node7"), "got: {text}");
    assert!(text.contains("--ip=10.0.0.7"), "got: {text}");
    assert!(!text.contains("{{"), "tokens left unrendered: {text}");
    // Delete.
    let res = app
        .clone()
        .oneshot(
            Request::builder()
                .method("DELETE")
                .uri(format!("/api/unattended/{id}"))
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();
    assert_eq!(res.status(), StatusCode::NO_CONTENT);
    let (_, b) = get(&app, "/api/unattended").await;
    let v: serde_json::Value = serde_json::from_slice(&b).unwrap();
    assert_eq!(v["files"].as_array().unwrap().len(), 0);
 }
 #[tokio::test]
 async fn unattended_upload_rejects_bad_type() {
    let (state, _dir) = build_state().await;
    let app = build_router(state);
    let (ct, body) = multipart_iso_body("evil.sh", b"#!/bin/sh\n");
    let (s, _) = post_multipart(&app, "/api/unattended", &ct, body).await;
    assert_eq!(s, StatusCode::BAD_REQUEST);
 }
 #[tokio::test]
 async fn host_pin_with_unattended_injects_kickstart_arg() {
    let (state, _dir) = build_state().await;
    let app = build_router(state.clone());
    // Upload a Linux ISO → synthesises the `fake-alpine-linux` LinuxKernel entry.
    let (ct, body) = multipart_iso_body("fake-alpine.iso", &fake_alpine_iso());
    let (s, _) = post_multipart(&app, "/api/isos", &ct, body).await;
    assert_eq!(s, StatusCode::CREATED);
    // Upload a kickstart.
    let (ct, body) = multipart_iso_body("ks.ks", b"install\n%packages\n@core\n%end\n");
    let (s, b) = post_multipart(&app, "/api/unattended", &ct, body).await;
    assert_eq!(s, StatusCode::CREATED);
    let ks_id = serde_json::from_slice::<serde_json::Value>(&b).unwrap()["id"]
        .as_str()
        .unwrap()
        .to_string();
    // Pin a MAC to the Linux entry with the unattended profile.
    let mac = "aa:bb:cc:dd:ee:01";
    let pin = format!(
        r#"{{"mac":"{mac}","target":"fake-alpine-linux","label":"lab","auto_hostname":"node7","auto_ip":"10.0.0.7","unattended_file":"{ks_id}"}}"#
    );
    let (s, b) = post_json(&app, "/api/hosts", &pin).await;
    assert_eq!(s, StatusCode::CREATED, "{}", String::from_utf8_lossy(&b));
    // Boot the entry as that MAC; the kernel line should carry inst.ks=.
    let (s, b) = get(&app, &format!("/boot/fake-alpine-linux.ipxe?mac={mac}")).await;
    assert_eq!(s, StatusCode::OK);
    let script = String::from_utf8_lossy(&b);
    assert!(
        script.contains("inst.ks="),
        "no kickstart arg injected:\n{script}"
    );
    assert!(
        script.contains("hostname=node7"),
        "hostname not passed:\n{script}"
    );
 }
 #[tokio::test]
 async fn host_pin_rejects_unknown_unattended_file() {
    let (state, _dir) = build_state().await;
    let app = build_router(state.clone());
    let (ct, body) = multipart_iso_body("fake-alpine.iso", &fake_alpine_iso());
    let (s, _) = post_multipart(&app, "/api/isos", &ct, body).await;
    assert_eq!(s, StatusCode::CREATED);
    let pin = r#"{"mac":"aa:bb:cc:dd:ee:02","target":"fake-alpine-linux","unattended_file":"does-not-exist"}"#;
    let (s, _) = post_json(&app, "/api/hosts", pin).await;
    assert_eq!(s, StatusCode::BAD_REQUEST);
 }
 #[tokio::test]
 async fn host_pin_rejects_bad_auto_ip() {
    let (state, _dir) = build_state().await;
    let app = build_router(state.clone());
    let (ct, body) = multipart_iso_body("fake-alpine.iso", &fake_alpine_iso());
    let (s, _) = post_multipart(&app, "/api/isos", &ct, body).await;
    assert_eq!(s, StatusCode::CREATED);
    let pin = r#"{"mac":"aa:bb:cc:dd:ee:03","target":"fake-alpine-linux","auto_ip":"not-an-ip"}"#;
    let (s, _) = post_json(&app, "/api/hosts", pin).await;
    assert_eq!(s, StatusCode::BAD_REQUEST);
 }
 #[tokio::test]
 async fn per_theme_logo_and_favicon_serve() {
    let (state, _dir) = build_state().await;
    // Light slot only; dark falls back to it, favicon stays bundled.
    let png = tiny_png();
    state
        .branding
        .set_logo(openpxe_core::LogoSlot::Light, "image/png", "png", &png)
        .unwrap();
    let app = build_router(state);
    // Light theme → the uploaded PNG.
    let (s, b) = get(&app, "/assets/logo.svg?theme=light").await;
    assert_eq!(s, StatusCode::OK);
    assert!(b.starts_with(b"\x89PNG"), "light slot should serve the PNG");
    // Dark theme → falls back to the light PNG (only slot set).
    let (s, b) = get(&app, "/assets/logo.svg?theme=dark").await;
    assert_eq!(s, StatusCode::OK);
    assert!(
        b.starts_with(b"\x89PNG"),
        "dark should fall back to light PNG"
    );
    // Favicon is always the bundled SVG, never the custom raster.
    let (s, b) = get(&app, "/assets/favicon.svg").await;
    assert_eq!(s, StatusCode::OK);
    let txt = String::from_utf8_lossy(&b);
    assert!(txt.contains("<svg"), "favicon must be the bundled SVG mark");
 }
 #[tokio::test]
 async fn branding_slot_rejects_unknown_and_client_svg() {
    let (state, _dir) = build_state().await;
    let app = build_router(state);
    // Unknown slot name → 400.
    let (ct, body) = multipart_iso_body("logo.png", &tiny_png());
    let (s, _) = post_multipart(&app, "/api/branding/logo/sideways", &ct, body).await;
    assert_eq!(s, StatusCode::BAD_REQUEST);
    // SVG into the client (PXE) slot → 400 (raster-only).
    let svg = br#"<svg xmlns="http://www.w3.org/2000/svg"/>"#;
    let boundary = "----OpenPxeTestBoundary1234";
    let mut b = Vec::new();
    b.extend_from_slice(format!("--{boundary}\r\n").as_bytes());
    b.extend_from_slice(b"Content-Disposition: form-data; name=\"file\"; filename=\"l.svg\"\r\n");
    b.extend_from_slice(b"Content-Type: image/svg+xml\r\n\r\n");
    b.extend_from_slice(svg);
    b.extend_from_slice(format!("\r\n--{boundary}--\r\n").as_bytes());
    let ct = format!("multipart/form-data; boundary={boundary}");
    let (s, _) = post_multipart(&app, "/api/branding/logo/client", &ct, b).await;
    assert_eq!(s, StatusCode::BAD_REQUEST);
 }
 // ─── v0.5.1: SAML SSO flow ──────────────────────────────────────────────────
 //
 // The core crate exhaustively tests signature verification + semantic
@@ -2145,8 +2404,16 @@ fn urlencode(s: &str) -> String {
            }
            _ => {
                out.push('%');
-                out.push(char::from_digit((b >> 4) as u32, 16).unwrap().to_ascii_uppercase());
+                out.push(
-                out.push(char::from_digit((b & 0xf) as u32, 16).unwrap().to_ascii_uppercase());
+                    char::from_digit((b >> 4) as u32, 16)
                        .unwrap()
                        .to_ascii_uppercase(),
                );
                out.push(
                    char::from_digit((b & 0xf) as u32, 16)
                        .unwrap()
                        .to_ascii_uppercase(),
                );
            }
        }
    }
@@ -39,6 +39,10 @@ image = { version = "0.25", default-features = false, features = ["png", "jpeg",
 # kernel mount. See crates/iso-store/src/nfs_share.rs for usage.
 nfs3_client = { workspace = true }
 nfs3_types = { workspace = true }
 # v0.5.5: pure-Rust SSH/SFTP client (ring backend) for the SFTP remote
 # share path. See crates/iso-store/src/sftp_share.rs for usage.
 russh = { workspace = true }
 russh-sftp = { workspace = true }
 # Needed for the Stream trait that wraps the mpsc receiver feeding
 # NFS read-loop bytes into axum's Body::from_stream.
 futures = { workspace = true }
@@ -25,9 +25,11 @@ pub enum BootKind {
        wimboot_url: String,
        files: Vec<(String, String)>,
    },
-    /// Last-resort: SAN-boot the ISO as an emulated CD. Only works for small
+    /// SAN-boot the raw ISO as an emulated CD (iPXE `sanboot`). The emulated
-    /// ISOs (<~1 GiB) and older distros. Kept for completeness, not the
+    /// CD is backed by on-demand HTTP range reads, so ISO size is *not* a
-    /// default.
+    /// constraint — this is the primary path for Windows (v0.5.8) and for any
    /// El Torito-bootable image we don't special-case: ESXi/VMvisor
    /// installers, BSDs, firmware/diagnostic tools, custom spins (v0.6.0).
    SanBootIso { iso_url: String },
 }
@@ -13,7 +13,7 @@ use serde::{Deserialize, Serialize};
 use std::io::{Read, Seek, SeekFrom};
 use std::path::Path;
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
 #[serde(rename_all = "snake_case")]
 pub enum DistroFamily {
    DebianUbuntu,
@@ -22,10 +22,22 @@ pub enum DistroFamily {
    Arch,
    Alpine,
    WindowsPe,
    #[default]
    Unknown,
 }
-#[derive(Debug, Clone, Serialize, Deserialize)]
+/// Bumped whenever the introspection logic changes in a way that should
 /// re-classify already-uploaded ISOs. On startup the store re-runs
 /// `introspect` on any *local* ISO whose persisted report predates this
 /// revision (see `IsoStore::load_from_disk`), so an upgrade fixes stale
 /// metadata — e.g. a Windows 11 ISO tagged `Unknown` by an older binary —
 /// without the operator having to delete and re-upload it.
 ///
 /// rev 1 (v0.5.9): added El Torito boot-catalog detection + broadened
 /// Windows (UDF/UTF-16) detection becomes retroactive.
 pub const INTROSPECT_REV: u32 = 1;
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct IntrospectionReport {
    pub family: DistroFamily,
    pub volume_label: Option<String>,
@@ -35,17 +47,28 @@ pub struct IntrospectionReport {
    pub initrd_paths: Vec<String>,
    /// True if `sources/boot.wim` present — Windows install media.
    pub has_boot_wim: bool,
    /// True if the ISO carries an El Torito boot catalog — i.e. it is
    /// bootable by BIOS/UEFI firmware and therefore by iPXE `sanboot`
    /// (emulated CD). This is the authoritative "can this boot at all?"
    /// signal for ISOs we can't classify as Linux or Windows (BSDs, ESXi,
    /// firmware tools, custom spins). A *data* ISO (e.g. a VMware vCenter
    /// appliance bundle) has no boot catalog and reports `false`. v0.5.9.
    #[serde(default)]
    pub el_torito: bool,
    /// Revision of the introspection logic that produced this report. Old
    /// `meta.json` files without the field deserialize as 0, which is
    /// below [`INTROSPECT_REV`], triggering a one-time re-introspect on
    /// the next startup. v0.5.9.
    #[serde(default)]
    pub introspect_rev: u32,
 }
 /// Probe an ISO file on disk. Never fails — on unrecoverable IO error we log
 /// and return an `Unknown` family so the uploader still sees a record.
 pub fn introspect(path: &Path) -> IntrospectionReport {
    let mut report = IntrospectionReport {
-        family: DistroFamily::Unknown,
+        introspect_rev: INTROSPECT_REV,
-        volume_label: None,
+        ..Default::default()
        kernel_path: None,
        initrd_paths: Vec::new(),
        has_boot_wim: false,
    };
    let Ok(mut f) = std::fs::File::open(path) else {
@@ -68,6 +91,11 @@ pub fn introspect(path: &Path) -> IntrospectionReport {
        }
    }
    // Does the ISO have an El Torito boot catalog? This is what decides
    // whether an ISO we *can't* otherwise classify is bootable at all —
    // a bootable ISO sanboots; a data/appliance ISO (no catalog) can't.
    report.el_torito = detect_el_torito(&mut f);
    // Cheap content scan: read the first ~64 MiB, look for signature filenames.
    // This is enough to identify `sources/boot.wim` (Windows) and common
    // kernel/initrd paths for the major Linux distros.
@@ -85,12 +113,37 @@ pub fn introspect(path: &Path) -> IntrospectionReport {
        read_total += n;
    }
    // `sources/boot.wim` is the definitive Windows-install-media marker
    // when the ISO exposes ASCII (ISO9660/Joliet) names. `contains_ascii`
    // is case-insensitive, so one form covers BOOT.WIM / boot.wim and the
    // backslash variant.
    if contains_ascii(&haystack, b"sources/boot.wim")
-        || contains_ascii(&haystack, b"SOURCES/BOOT.WIM")
+        || contains_ascii(&haystack, b"sources\\boot.wim")
        || contains_ascii(&haystack, b"SOURCES\\BOOT.WIM")
    {
        report.has_boot_wim = true;
-        if report.family == DistroFamily::Unknown {
+        report.family = DistroFamily::WindowsPe;
    }
    // v0.5.8: broaden Windows detection. Modern Windows 10/11 ISOs are
    // UDF — filenames are stored as UTF-16 (so the ASCII scan above misses
    // them) and the volume label is a cryptic Microsoft string (so
    // `family_from_label` misses it too). Booting is via HTTP sanboot of
    // the raw ISO (no boot.wim extraction), so we only need the *family*.
    // Catch the common cases: well-known Windows markers in either ASCII
    // or UTF-16LE within the first 16 MiB, plus a filename hint.
    if report.family == DistroFamily::Unknown {
        let head = &haystack[..haystack.len().min(16 * 1024 * 1024)];
        let ascii_markers: [&[u8]; 4] = [
            b"bootmgr",
            b"sources/install.wim",
            b"sources/install.esd",
            b"efi/microsoft",
        ];
        let utf16_markers = ["bootmgr", "boot.wim", "install.wim", "microsoft"];
        let looks_windows = ascii_markers.iter().any(|m| contains_ascii(head, m))
            || utf16_markers.iter().any(|m| contains_utf16le_ci(head, m))
            || filename_looks_windows(path);
        if looks_windows {
            report.family = DistroFamily::WindowsPe;
        }
    }
@@ -158,6 +211,83 @@ fn contains_ascii(haystack: &[u8], needle: &[u8]) -> bool {
        .any(|w| w.eq_ignore_ascii_case(needle))
 }
 /// Case-insensitive search for an ASCII string encoded as UTF-16LE — the
 /// way UDF (and thus modern Windows ISOs) store filenames. Each character
 /// is two bytes: the ASCII low byte (compared case-insensitively) followed
 /// by a 0 high byte. v0.5.8.
 fn contains_utf16le_ci(haystack: &[u8], ascii: &str) -> bool {
    let n = ascii.len();
    if n == 0 || haystack.len() < n * 2 {
        return false;
    }
    let lower: Vec<u8> = ascii.bytes().map(|b| b.to_ascii_lowercase()).collect();
    haystack.windows(n * 2).any(|w| {
        lower
            .iter()
            .enumerate()
            .all(|(i, &c)| w[i * 2 + 1] == 0 && w[i * 2].to_ascii_lowercase() == c)
    })
 }
 /// Filename heuristic: a stock Windows ISO almost always carries an obvious
 /// token in its name (e.g. `..._windows_11_...`, `Win10`, `winserver`).
 /// Used only as a last-resort family hint when the content scan and volume
 /// label are inconclusive. v0.5.8.
 fn filename_looks_windows(path: &Path) -> bool {
    let name = path
        .file_name()
        .and_then(|s| s.to_str())
        .unwrap_or("")
        .to_ascii_lowercase();
    const TOKENS: [&str; 6] = [
        "windows",
        "winpe",
        "win10",
        "win11",
        "winserver",
        "win-server",
    ];
    TOKENS.iter().any(|t| name.contains(t))
 }
 /// The boot-system identifier string in an El Torito Boot Record Volume
 /// Descriptor (offset 7, NUL-padded to 32 bytes).
 const EL_TORITO_ID: &[u8] = b"EL TORITO SPECIFICATION";
 /// Detect an El Torito boot catalog — the marker that an ISO is bootable
 /// by BIOS/UEFI firmware (and thus by iPXE `sanboot`).
 ///
 /// The ISO9660 Volume Descriptor Set starts at LBA 16 (offset 0x8000) and
 /// runs one 2048-byte descriptor per sector until a Set Terminator
 /// (type 0xFF). A Boot Record descriptor (type 0x00) whose 32-byte boot
 /// system identifier reads "EL TORITO SPECIFICATION" means the image
 /// declares an El Torito boot catalog. We only confirm its presence — we
 /// don't parse the catalog (sanboot/the firmware does that). The walk is
 /// capped so a malformed/huge image can't spin us. v0.5.9.
 fn detect_el_torito(f: &mut std::fs::File) -> bool {
    let mut vd = [0u8; 2048];
    for lba in 16u64..32 {
        if f.seek(SeekFrom::Start(lba * 2048)).is_err() || f.read_exact(&mut vd).is_err() {
            return false;
        }
        // Every descriptor in the set carries the "CD001" magic; once it's
        // missing we've walked off the end of a valid set.
        if &vd[1..6] != b"CD001" {
            return false;
        }
        match vd[0] {
            // Boot Record descriptor carrying the El Torito signature.
            0x00 if vd[7..7 + EL_TORITO_ID.len()] == *EL_TORITO_ID => return true,
            // Volume Descriptor Set Terminator — nothing bootable found.
            0xFF => return false,
            // Any other descriptor (incl. a non-El-Torito boot record) —
            // keep walking the set.
            _ => {}
        }
    }
    false
 }
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -179,4 +309,72 @@ mod tests {
        assert_eq!(family_from_label("ARCH_202604"), DistroFamily::Arch);
        assert_eq!(family_from_label("weird-custom"), DistroFamily::Unknown);
    }
    #[test]
    fn utf16le_marker_matches_case_insensitively() {
        // "boot.wim" encoded UTF-16LE, mixed case — UDF stores Windows
        // filenames this way, which the ASCII scan can't see.
        let s = "BOOT.WIM";
        let utf16: Vec<u8> = s.bytes().flat_map(|b| [b, 0]).collect();
        let mut hay = vec![0u8; 8];
        hay.extend_from_slice(&utf16);
        hay.extend_from_slice(&[1, 2, 3]);
        assert!(contains_utf16le_ci(&hay, "boot.wim"));
        assert!(contains_utf16le_ci(&hay, "Boot.Wim"));
        assert!(!contains_utf16le_ci(&hay, "install.wim"));
        // An ASCII (not UTF-16) occurrence must NOT match the UTF-16 scan.
        assert!(!contains_utf16le_ci(b"boot.wim plain ascii", "boot.wim"));
    }
    #[test]
    fn el_torito_boot_catalog_detected() {
        let dir = tempfile::tempdir().unwrap();
        // Helper: stamp a 2048-byte descriptor at `lba` with type + magic.
        let stamp = |img: &mut [u8], lba: usize, ty: u8| {
            let off = lba * 2048;
            img[off] = ty;
            img[off + 1..off + 6].copy_from_slice(b"CD001");
        };
        // Bootable image: PVD @16, El Torito Boot Record @17, terminator @18.
        let mut boot = vec![0u8; 2048 * 19];
        stamp(&mut boot, 16, 0x01);
        stamp(&mut boot, 17, 0x00);
        boot[17 * 2048 + 7..17 * 2048 + 7 + EL_TORITO_ID.len()].copy_from_slice(EL_TORITO_ID);
        stamp(&mut boot, 18, 0xFF);
        let bp = dir.path().join("boot.iso");
        std::fs::write(&bp, &boot).unwrap();
        let mut f = std::fs::File::open(&bp).unwrap();
        assert!(
            detect_el_torito(&mut f),
            "El Torito boot record should match"
        );
        // Data/appliance image: PVD @16, terminator @17, no boot record.
        let mut data = vec![0u8; 2048 * 18];
        stamp(&mut data, 16, 0x01);
        stamp(&mut data, 17, 0xFF);
        let dp = dir.path().join("data.iso");
        std::fs::write(&dp, &data).unwrap();
        let mut f2 = std::fs::File::open(&dp).unwrap();
        assert!(!detect_el_torito(&mut f2), "data ISO has no boot catalog");
    }
    #[test]
    fn filename_hint_catches_windows_isos() {
        use std::path::Path;
        assert!(filename_looks_windows(Path::new(
            "en-us_windows_11_iot_enterprise_ltsc_2024_x64_dvd.iso"
        )));
        assert!(filename_looks_windows(Path::new(
            "Win10_22H2_English_x64.iso"
        )));
        assert!(filename_looks_windows(Path::new("winserver2022.iso")));
        assert!(!filename_looks_windows(Path::new(
            "ubuntu-24.04-desktop.iso"
        )));
        assert!(!filename_looks_windows(Path::new(
            "Rocky-9.4-x86_64-dvd.iso"
        )));
    }
 }
@@ -20,9 +20,11 @@ pub mod entry;
 pub mod introspect;
 pub mod nfs_share;
 pub mod pxe_logo;
 pub mod sftp_share;
 pub mod smb;
 pub mod smb_share;
 pub mod store;
 pub mod unattended;
 pub mod windows;
 pub use entry::{BootEntry, BootKind, KernelArgs};
@@ -39,8 +41,18 @@ pub use smb_share::{SmbAddRequest, SmbShare, SmbShareError, SmbShareManager, Smb
 // "works in any container" property as SMB, plus support for HTTP
 // Range requests because NFSv3 READ3 takes an explicit offset.
 pub use nfs_share::{NfsAddRequest, NfsShare, NfsShareError, NfsShareManager, NfsStream};
 // v0.5.5: SFTP-over-SSH remote shares via the pure-Rust `russh` +
 // `russh-sftp` crates (ring backend — no OpenSSL, no new C deps). Like
 // NFS, supports HTTP Range requests because SFTP opens a seekable file
 // handle. See crates/iso-store/src/sftp_share.rs.
 pub use sftp_share::{
    SftpAddRequest, SftpAuthKind, SftpShare, SftpShareError, SftpShareManager, SftpStream,
 };
 pub use store::{
-    generate_boot_entries_for, slugify_str, IsoCategory, IsoMeta, IsoSource, IsoStore,
+    generate_boot_entries_for, slugify_str, IsoCategory, IsoMeta, IsoSource, IsoStore, UploadHandle,
-    UploadHandle,
+};
 pub use unattended::{
    classify as classify_unattended, render_template, UnattendedKind, UnattendedMeta,
    UnattendedStore, MAX_UNATTENDED_BYTES,
 };
 pub use windows::{WimPatcher, WinPatchState};
@@ -57,7 +57,7 @@
 //! UI to ask for. (If a future server needs Kerberos or non-default
 //! uid mapping we can add those, but for ISO read access nobody does.)
-use crate::introspect::{DistroFamily, IntrospectionReport};
+use crate::introspect::IntrospectionReport;
 use crate::store::{generate_boot_entries_for, slugify_str, IsoSource, IsoStore};
 use bytes::Bytes;
 use nfs3_client::tokio::TokioConnector;
@@ -399,13 +399,7 @@ impl NfsShareManager {
            // Same approach as SMB: no real introspection over the
            // network in v0.4.67. The boot-entry generator falls back
            // to filename-based sanboot detection.
-            let report = IntrospectionReport {
+            let report = IntrospectionReport::default();
                family: DistroFamily::Unknown,
                volume_label: None,
                kernel_path: None,
                initrd_paths: Vec::new(),
                has_boot_wim: false,
            };
            let boot_entries = generate_boot_entries_for(&iso_id, &entry.filename, &report);
            let source = IsoSource::Nfs {
                share_id: share.id.clone(),
@@ -56,7 +56,7 @@
 //! streaming. A follow-up release can add libsmbclient-based seek if
 //! a real workload needs it.
-use crate::introspect::{DistroFamily, IntrospectionReport};
+use crate::introspect::IntrospectionReport;
 use crate::store::{generate_boot_entries_for, slugify_str, IsoSource, IsoStore};
 use openpxe_core::{Error, Result};
 use parking_lot::Mutex;
@@ -470,13 +470,7 @@ impl SmbShareManager {
            // and the operator gets *something* bootable. A follow-up
            // release can do a bounded `smbclient get` of the first
            // 64 KiB for real detection.
-            let report = IntrospectionReport {
+            let report = IntrospectionReport::default();
                family: DistroFamily::Unknown,
                volume_label: None,
                kernel_path: None,
                initrd_paths: Vec::new(),
                has_boot_wim: false,
            };
            let boot_entries = generate_boot_entries_for(&iso_id, &entry.filename, &report);
            let source = IsoSource::Smb {
                share_id: share.id.clone(),
@@ -24,6 +24,10 @@ use tokio::io::AsyncWriteExt;
 /// `nfs3_client` crate (in-process, no subprocess). Same "works in
 /// any container" property as SMB, plus Range requests work because
 /// NFSv3 READ3 takes an explicit offset.
 /// `Sftp` (v0.5.5) — remote SFTP-over-SSH share, streamed via the
 /// pure-Rust `russh` + `russh-sftp` crates (in-process). Like NFS it
 /// supports HTTP Range requests because SFTP opens a seekable file
 /// handle (`SSH_FXP_READ` at offset).
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 #[serde(tag = "kind", rename_all = "snake_case")]
 pub enum IsoSource {
@@ -42,6 +46,13 @@ pub enum IsoSource {
        /// Filename at the export root.
        relative_path: String,
    },
    /// v0.5.5: SFTP-over-SSH via the in-process `russh` + `russh-sftp`
    /// crates.
    Sftp {
        share_id: String,
        /// Filename at the export root.
        relative_path: String,
    },
 }
 /// Where the ISO lands in the PXE menu hierarchy.
@@ -212,7 +223,8 @@ impl IsoStore {
                continue;
            }
            if let Ok(text) = tokio::fs::read_to_string(&p).await {
-                if let Ok(meta) = serde_json::from_str::<IsoMeta>(&text) {
+                if let Ok(mut meta) = serde_json::from_str::<IsoMeta>(&text) {
                    self.reintrospect_if_stale(&mut meta).await;
                    self.insert(meta);
                }
            }
@@ -220,6 +232,46 @@ impl IsoStore {
        Ok(())
    }
    /// v0.5.9: re-run introspection on a *local* ISO whose persisted report
    /// predates the current logic. ISOs uploaded by an older binary carry a
    /// stale family/boot profile — most visibly a Windows 11 ISO tagged
    /// `Unknown` before the UDF/El-Torito detection landed, which then shows
    /// as "won't boot" forever. Re-probing on startup fixes them in place,
    /// no delete-and-re-upload. Bounded: only `Local` sources (we have the
    /// bytes locally) below [`introspect::INTROSPECT_REV`], so it runs at
    /// most once per ISO per upgrade. The probe reads up to ~64 MiB, so we
    /// push it onto the blocking pool to keep the async runtime responsive.
    async fn reintrospect_if_stale(&self, meta: &mut IsoMeta) {
        if !matches!(meta.source, IsoSource::Local)
            || meta.introspection.introspect_rev >= crate::introspect::INTROSPECT_REV
        {
            return;
        }
        let path = self.iso_path(&meta.id);
        if !path.exists() {
            return;
        }
        let Ok(fresh) = tokio::task::spawn_blocking(move || introspect(&path)).await else {
            tracing::warn!(target: "openpxe::iso", id = %meta.id, "re-introspect task failed");
            return;
        };
        let before = meta.introspection.family;
        meta.introspection = fresh;
        meta.boot_entries = generate_boot_entries(&meta.id, &meta.filename, &meta.introspection);
        if let Err(e) = self.persist_meta(meta).await {
            tracing::warn!(target: "openpxe::iso", id = %meta.id, "re-introspect persist: {e}");
            return;
        }
        tracing::info!(
            target: "openpxe::iso",
            id = %meta.id,
            from = ?before,
            to = ?meta.introspection.family,
            el_torito = meta.introspection.el_torito,
            "re-introspected stale ISO metadata"
        );
    }
    fn insert(&self, meta: IsoMeta) {
        self.inner.write().isos.insert(meta.id.clone(), meta);
    }
@@ -299,11 +351,11 @@ impl IsoStore {
                    None
                }
            }
-            // SMB and NFS sources have no local path — they're
+            // SMB, NFS, and SFTP sources have no local path — they're
            // streamed in-process. Callers must inspect the source
            // kind first and dispatch to the appropriate share
            // manager.
-            IsoSource::Smb { .. } | IsoSource::Nfs { .. } => None,
+            IsoSource::Smb { .. } | IsoSource::Nfs { .. } | IsoSource::Sftp { .. } => None,
        }
    }
@@ -363,9 +415,9 @@ impl IsoStore {
    pub fn drop_external_source(&self, share_id: &str) {
        let mut g = self.inner.write();
        g.isos.retain(|_, m| match &m.source {
-            IsoSource::Smb { share_id: sid, .. } | IsoSource::Nfs { share_id: sid, .. } => {
+            IsoSource::Smb { share_id: sid, .. }
-                sid != share_id
+            | IsoSource::Nfs { share_id: sid, .. }
-            }
+            | IsoSource::Sftp { share_id: sid, .. } => sid != share_id,
            IsoSource::Local => true,
        });
    }
@@ -546,22 +598,22 @@ fn generate_boot_entries(id: &str, filename: &str, r: &IntrospectionReport) -> V
        .clone()
        .unwrap_or_else(|| filename.to_string());
    match r.family {
-        DistroFamily::WindowsPe if r.has_boot_wim => {
+        DistroFamily::WindowsPe => {
-            // Standard wimboot chain. Paths are in-ISO; the HTTP layer maps
+            // v0.5.8: boot Windows directly via iPXE HTTP sanboot. iPXE
-            // `iso/<id>/<path>` to on-disk extraction via ISO9660 lookup.
+            // exposes the raw ISO as an emulated CD backed by on-demand
-            let base = format!("iso/{id}");
+            // HTTP range reads, and Windows Setup boots from it. This
            // replaces the old wimboot+SMB chain, which (a) needed an SMB
            // server the host often can't provide (port 445 collisions),
            // (b) served in-ISO files via an ISO9660 lookup that failed on
            // UDF-only Windows 11 ISOs, and (c) required an operator
            // toggle. sanboot needs none of that — just the HTTP port,
            // which works in any environment. The unmodified, stock ISO is
            // served at iso/<id>.iso; nothing is injected into Windows.
            vec![BootEntry {
-                id: format!("{id}-winpe"),
+                id: format!("{id}-windows"),
-                title: format!("{title} (Windows / wimboot)"),
+                title: format!("{title} (Windows)"),
-                kind: BootKind::Wimboot {
+                kind: BootKind::SanBootIso {
-                    wimboot_url: "ipxe/wimboot".to_string(),
+                    iso_url: format!("iso/{id}.iso"),
                    files: vec![
                        ("bootmgr".into(), format!("{base}/bootmgr")),
                        ("bootmgr.efi".into(), format!("{base}/bootmgr.efi")),
                        ("bcd".into(), format!("{base}/boot/bcd")),
                        ("boot.sdi".into(), format!("{base}/boot/boot.sdi")),
                        ("boot.wim".into(), format!("{base}/sources/boot.wim")),
                    ],
                },
            }]
        }
@@ -587,15 +639,33 @@ fn generate_boot_entries(id: &str, filename: &str, r: &IntrospectionReport) -> V
            }]
        }
        _ => {
-            // Last-resort SAN boot. Won't work for large modern ISOs, but
+            // No Windows-install media and no Linux kernel/initrd. Decide
-            // lets the ISO at least appear in the menu.
+            // whether the ISO is bootable at all (v0.6.0):
-            vec![BootEntry {
+            //   * `el_torito` — it carries a boot catalog, so iPXE sanboots
-                id: format!("{id}-sanboot"),
+            //     the raw image as an emulated CD: BSDs, ESXi/VMvisor
-                title: format!("{title} (SAN boot — may fail for >1GiB ISOs)"),
+            //     installers, firmware tools, custom spins. The emulated CD
-                kind: BootKind::SanBootIso {
+            //     is backed by HTTP range reads, so ISO size is a non-issue
-                    iso_url: format!("iso/{id}.iso"),
+            //     (this is the same path Windows uses since v0.5.8) — hence
-                },
+            //     no more "may fail for >1GiB ISOs" disclaimer.
-            }]
+            //   * `introspect_rev == 0` — a remote-share ISO we couldn't
            //     introspect (SMB/NFS/SFTP listings don't seek into the ISO).
            //     Offer sanboot optimistically rather than hide a
            //     likely-bootable installer.
            // Otherwise it's a local image we *did* introspect and found to
            // carry no boot catalog — a data/appliance ISO (e.g. a VMware
            // vCenter Server Appliance bundle). It genuinely cannot boot, so
            // we expose no menu entry; the dashboard flags it instead.
            if r.el_torito || r.introspect_rev == 0 {
                vec![BootEntry {
                    id: format!("{id}-sanboot"),
                    title,
                    kind: BootKind::SanBootIso {
                        iso_url: format!("iso/{id}.iso"),
                    },
                }]
            } else {
                Vec::new()
            }
        }
    }
 }
@@ -659,13 +729,59 @@ mod tests {
        // 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("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}");
    }
    #[test]
    fn boot_entries_respect_el_torito_and_source() {
        use crate::introspect::INTROSPECT_REV;
        // ESXi / VMvisor installer shape: bootable (carries an El Torito
        // catalog) but not classifiable as Windows or Linux. Must yield a
        // single sanboot entry so it's selectable + boots via emulated CD.
        let esxi = IntrospectionReport {
            family: DistroFamily::Unknown,
            volume_label: Some("ESXI-7.0U3".into()),
            el_torito: true,
            introspect_rev: INTROSPECT_REV,
            ..Default::default()
        };
        let e = generate_boot_entries("esxi", "VMware-VMvisor-Installer-7.0U3n.iso", &esxi);
        assert_eq!(e.len(), 1, "ESXi should get exactly one boot entry");
        assert!(matches!(e[0].kind, BootKind::SanBootIso { .. }));
        // Clean title — no stale ">1GiB may fail" disclaimer.
        assert!(!e[0].title.contains("may fail"), "title: {}", e[0].title);
        // VCSA / data-appliance shape: locally introspected (rev set), no
        // boot catalog, not Windows/Linux. Genuinely unbootable → no entry,
        // so it stays out of the iPXE menu (the dashboard flags it instead).
        let vcsa = IntrospectionReport {
            family: DistroFamily::Unknown,
            el_torito: false,
            introspect_rev: INTROSPECT_REV,
            ..Default::default()
        };
        assert!(
            generate_boot_entries("vcsa", "VMware-VCSA-all-8.0.iso", &vcsa).is_empty(),
            "data/appliance ISO must produce no boot entry"
        );
        // Remote-share ISO: never introspected (rev 0, no random access over
        // SMB/NFS/SFTP). Assume bootable and offer sanboot rather than hide a
        // likely-bootable installer.
        let remote = IntrospectionReport::default();
        let r = generate_boot_entries("remote", "unknown-remote.iso", &remote);
        assert_eq!(r.len(), 1, "remote (uninspected) ISO keeps a sanboot entry");
        assert!(matches!(r[0].kind, BootKind::SanBootIso { .. }));
    }
    fn fake_meta(id: &str) -> IsoMeta {
        IsoMeta {
            id: id.into(),
@@ -673,13 +789,7 @@ mod tests {
            size_bytes: 0,
            sha256_hex: None,
            uploaded_at: OffsetDateTime::now_utc(),
-            introspection: IntrospectionReport {
+            introspection: IntrospectionReport::default(),
                family: DistroFamily::Unknown,
                volume_label: None,
                kernel_path: None,
                initrd_paths: vec![],
                has_boot_wim: false,
            },
            boot_entries: vec![],
            source: IsoSource::Local,
            password_hash: None,
@@ -0,0 +1,412 @@
 //! Unattended-install answer-file store (v0.5.2).
 //!
 //! Operators upload the answer file their installer expects — a RHEL/
 //! Fedora **Kickstart**, a Debian **Preseed**, an Ubuntu **Autoinstall**
 //! cloud-init user-data, or a Windows **answer file** (`autounattend.xml`)
 //! — and OpenPXE serves it on demand to the booting machine. Files live
 //! in their own directory (`<unattended_dir>/`), deliberately *not* under
 //! `iso_dir`, so they never appear in the ISO listing or the PXE menu.
 //!
 //! Storage mirrors [`crate::store::IsoStore`]: in-memory map authoritative
 //! for the process, sidecar `*.meta.json` on disk is the source of truth on
 //! restart. The raw answer file sits beside it as `<id>.file`.
 //!
 //! Templating is applied at *serve* time, not store time — see
 //! [`render_template`]. The stored bytes are exactly what the operator
 //! uploaded; per-host hostname/IP/MAC values are substituted into a copy
 //! when the file is fetched for a specific client.
 use crate::store::slugify_str;
 use openpxe_core::{Error, Result};
 use parking_lot::RwLock;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::path::PathBuf;
 use std::sync::Arc;
 use time::OffsetDateTime;
 /// Disk + memory cap for one answer file. Kickstarts/preseeds/cloud-init
 /// configs are a few KB; 1 MiB is a comfortable ceiling that still bounds
 /// abuse.
 pub const MAX_UNATTENDED_BYTES: usize = 1024 * 1024;
 /// Which installer the answer file targets. Drives the kernel-argument
 /// injection in the boot chain.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum UnattendedKind {
    /// RHEL / Fedora / CentOS / AlmaLinux / Rocky — `inst.ks=<url>`.
    Kickstart,
    /// Debian / older Ubuntu — `auto=true priority=critical url=<url>`.
    Preseed,
    /// Ubuntu 20.04+ Subiquity autoinstall — cloud-init NoCloud:
    /// `autoinstall ds=nocloud-net;s=<url>/`.
    Autoinstall,
    /// Windows Setup answer file (`autounattend.xml`). Served, not
    /// auto-injected (Windows reads it from media/USB, not a kernel arg).
    AnswerFile,
    /// Couldn't classify — stored + served, no auto-injection.
    #[default]
    Unknown,
 }
 impl UnattendedKind {
    #[must_use]
    pub fn label(self) -> &'static str {
        match self {
            UnattendedKind::Kickstart => "Kickstart",
            UnattendedKind::Preseed => "Preseed",
            UnattendedKind::Autoinstall => "Autoinstall",
            UnattendedKind::AnswerFile => "Answer file",
            UnattendedKind::Unknown => "Unknown",
        }
    }
 }
 /// Lowercase file extension (no dot), or `None` if there isn't one.
 fn ext_lower(filename: &str) -> Option<String> {
    std::path::Path::new(filename)
        .extension()
        .and_then(|e| e.to_str())
        .map(str::to_ascii_lowercase)
 }
 /// Classify an upload from its filename + a peek at its content. Best
 /// effort: extension first, then a content sniff to disambiguate the
 /// `.cfg` case (both Kickstart and Preseed use it).
 #[must_use]
 pub fn classify(filename: &str, content: &[u8]) -> UnattendedKind {
    let lower_name = filename.to_ascii_lowercase();
    let ext = ext_lower(filename);
    let text = String::from_utf8_lossy(&content[..content.len().min(8192)]);
    let looks_preseed = text.contains("d-i ") || text.contains("preseed/");
    let looks_kickstart = text.contains("%packages")
        || text.contains("\nlang ")
        || text.contains("\nkeyboard ")
        || text.contains("bootloader --")
        || text.starts_with("install");
    let looks_cloud_init = text.contains("autoinstall")
        || text.contains("#cloud-config")
        || text.contains("version: 1");
    match ext.as_deref() {
        Some("ks") => return UnattendedKind::Kickstart,
        Some("seed") => return UnattendedKind::Preseed,
        Some("xml") => return UnattendedKind::AnswerFile,
        Some("yaml" | "yml") => return UnattendedKind::Autoinstall,
        Some("cfg") => {
            return if looks_kickstart && !looks_preseed {
                UnattendedKind::Kickstart
            } else {
                UnattendedKind::Preseed
            };
        }
        _ => {}
    }
    if lower_name == "user-data" {
        return UnattendedKind::Autoinstall;
    }
    // No recognised extension — fall back to content sniffing.
    if looks_cloud_init {
        UnattendedKind::Autoinstall
    } else if looks_kickstart {
        UnattendedKind::Kickstart
    } else if looks_preseed {
        UnattendedKind::Preseed
    } else {
        UnattendedKind::Unknown
    }
 }
 /// True if the filename carries an extension we accept for upload. We
 /// also accept the bare `user-data` name (cloud-init NoCloud convention).
 #[must_use]
 pub fn is_accepted_filename(filename: &str) -> bool {
    if filename.trim().eq_ignore_ascii_case("user-data") {
        return true;
    }
    matches!(
        ext_lower(filename).as_deref(),
        Some("ks" | "cfg" | "seed" | "yaml" | "yml" | "xml")
    )
 }
 /// Sidecar metadata for a stored answer file.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct UnattendedMeta {
    /// URL-safe slug, unique within the store.
    pub id: String,
    /// Original upload filename, shown in the UI.
    pub filename: String,
    pub kind: UnattendedKind,
    pub size_bytes: u64,
    #[serde(with = "time::serde::rfc3339")]
    pub uploaded_at: OffsetDateTime,
 }
 #[derive(Debug, Default)]
 struct Inner {
    files: HashMap<String, UnattendedMeta>,
 }
 /// In-memory + on-disk answer-file registry. Cheap to clone.
 #[derive(Debug, Clone)]
 pub struct UnattendedStore {
    dir: Arc<PathBuf>,
    inner: Arc<RwLock<Inner>>,
 }
 impl UnattendedStore {
    #[must_use]
    pub fn new(dir: PathBuf) -> Self {
        Self {
            dir: Arc::new(dir),
            inner: Arc::new(RwLock::new(Inner::default())),
        }
    }
    pub async fn ensure_dir(&self) -> Result<()> {
        tokio::fs::create_dir_all(self.dir.as_path()).await?;
        Ok(())
    }
    /// Scan the directory on startup, loading every `*.meta.json` sidecar.
    pub async fn load_from_disk(&self) -> Result<()> {
        self.ensure_dir().await?;
        let mut entries = tokio::fs::read_dir(self.dir.as_path()).await?;
        while let Some(e) = entries.next_entry().await? {
            let p = e.path();
            let is_meta = p
                .file_name()
                .and_then(|s| s.to_str())
                .is_some_and(|n| n.ends_with(".meta.json"));
            if !is_meta {
                continue;
            }
            if let Ok(text) = tokio::fs::read_to_string(&p).await {
                if let Ok(meta) = serde_json::from_str::<UnattendedMeta>(&text) {
                    self.inner.write().files.insert(meta.id.clone(), meta);
                }
            }
        }
        Ok(())
    }
    fn data_path(&self, id: &str) -> PathBuf {
        self.dir.join(format!("{id}.file"))
    }
    fn meta_path(&self, id: &str) -> PathBuf {
        self.dir.join(format!("{id}.meta.json"))
    }
    /// Mint a unique slug from the upload filename's stem.
    fn unique_id(&self, filename: &str) -> String {
        let stem = filename.rsplit_once('.').map_or(filename, |(s, _)| s);
        let base = {
            let s = slugify_str(stem);
            if s.is_empty() {
                "unattended".to_string()
            } else {
                s
            }
        };
        let g = self.inner.read();
        if !g.files.contains_key(&base) {
            return base;
        }
        for n in 1.. {
            let candidate = format!("{base}-{n}");
            if !g.files.contains_key(&candidate) {
                return candidate;
            }
        }
        unreachable!("u64 ids exhausted")
    }
    /// Store an uploaded answer file. Validates type + size, classifies,
    /// writes the bytes + a sidecar, and returns the new metadata.
    pub async fn add(&self, filename: &str, bytes: &[u8]) -> Result<UnattendedMeta> {
        if !is_accepted_filename(filename) {
            return Err(Error::Invalid(format!(
                "unsupported answer-file type '{filename}'. Accepted: .ks, .cfg, .seed, .yaml, .yml, .xml, user-data"
            )));
        }
        if bytes.len() > MAX_UNATTENDED_BYTES {
            return Err(Error::Invalid(format!(
                "answer file too large ({} bytes, max {MAX_UNATTENDED_BYTES})",
                bytes.len()
            )));
        }
        self.ensure_dir().await?;
        let kind = classify(filename, bytes);
        let id = self.unique_id(filename);
        let meta = UnattendedMeta {
            id: id.clone(),
            filename: filename.to_string(),
            kind,
            size_bytes: bytes.len() as u64,
            uploaded_at: OffsetDateTime::now_utc(),
        };
        // Atomic data write: tmp -> rename.
        let data = self.data_path(&id);
        let tmp = data.with_extension("file.tmp");
        tokio::fs::write(&tmp, bytes).await?;
        tokio::fs::rename(&tmp, &data).await?;
        let meta_text = serde_json::to_string_pretty(&meta).map_err(|e| Error::Other(e.into()))?;
        tokio::fs::write(self.meta_path(&id), meta_text).await?;
        self.inner.write().files.insert(id.clone(), meta.clone());
        tracing::info!(
            target: "openpxe::unattended",
            id = %id, file = %filename, kind = ?kind, size = bytes.len(),
            "unattended answer file stored"
        );
        Ok(meta)
    }
    #[must_use]
    pub fn list(&self) -> Vec<UnattendedMeta> {
        let g = self.inner.read();
        let mut v: Vec<_> = g.files.values().cloned().collect();
        v.sort_by_key(|m| std::cmp::Reverse(m.uploaded_at));
        v
    }
    #[must_use]
    pub fn get(&self, id: &str) -> Option<UnattendedMeta> {
        self.inner.read().files.get(id).cloned()
    }
    /// Read the raw stored bytes for `id`.
    pub async fn read(&self, id: &str) -> Result<Vec<u8>> {
        if !self.inner.read().files.contains_key(id) {
            return Err(Error::NotFound(format!("no unattended file '{id}'")));
        }
        let bytes = tokio::fs::read(self.data_path(id)).await?;
        Ok(bytes)
    }
    /// Remove a file + its sidecar. Returns true if something was removed.
    pub async fn remove(&self, id: &str) -> bool {
        let existed = self.inner.write().files.remove(id).is_some();
        if existed {
            let _ = tokio::fs::remove_file(self.data_path(id)).await;
            let _ = tokio::fs::remove_file(self.meta_path(id)).await;
        }
        existed
    }
    #[must_use]
    pub fn len(&self) -> usize {
        self.inner.read().files.len()
    }
    #[must_use]
    pub fn is_empty(&self) -> bool {
        self.len() == 0
    }
 }
 /// Substitute the per-host template tokens into an answer file at serve
 /// time. Recognised tokens (case-sensitive, double-brace): `{{HOSTNAME}}`,
 /// `{{IP}}`, `{{MAC}}`. Unset values render as an empty string so a
 /// half-filled profile never leaves a literal `{{IP}}` in the file.
 #[must_use]
 pub fn render_template(
    content: &str,
    mac: Option<&str>,
    hostname: Option<&str>,
    ip: Option<&str>,
 ) -> String {
    content
        .replace("{{HOSTNAME}}", hostname.unwrap_or(""))
        .replace("{{IP}}", ip.unwrap_or(""))
        .replace("{{MAC}}", mac.unwrap_or(""))
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    use tempfile::tempdir;
    #[test]
    fn classify_by_extension() {
        assert_eq!(
            classify(" subiquity.yaml", b""),
            UnattendedKind::Autoinstall
        );
        assert_eq!(classify("ks.ks", b""), UnattendedKind::Kickstart);
        assert_eq!(classify("preseed.seed", b""), UnattendedKind::Preseed);
        assert_eq!(
            classify("autounattend.xml", b"<xml/>"),
            UnattendedKind::AnswerFile
        );
        assert_eq!(classify("user-data", b""), UnattendedKind::Autoinstall);
    }
    #[test]
    fn classify_cfg_by_content() {
        assert_eq!(
            classify("answer.cfg", b"d-i debian-installer/locale string en_US"),
            UnattendedKind::Preseed
        );
        assert_eq!(
            classify("answer.cfg", b"install\n%packages\n@core\n%end\n"),
            UnattendedKind::Kickstart
        );
    }
    #[test]
    fn accepted_filenames() {
        assert!(is_accepted_filename("a.ks"));
        assert!(is_accepted_filename("USER-DATA".to_lowercase().as_str()));
        assert!(is_accepted_filename("autounattend.XML"));
        assert!(!is_accepted_filename("evil.sh"));
        assert!(!is_accepted_filename("image.iso"));
    }
    #[test]
    fn template_substitutes_and_blanks_unset() {
        let body = "ip={{IP}} host={{HOSTNAME}} mac={{MAC}}";
        let out = render_template(body, Some("aa:bb"), Some("node1"), None);
        assert_eq!(out, "ip= host=node1 mac=aa:bb");
    }
    #[tokio::test]
    async fn add_list_read_remove_round_trip() {
        let dir = tempdir().unwrap();
        let s = UnattendedStore::new(dir.path().join("unattended"));
        let meta = s
            .add("rocky.ks", b"install\n%packages\n@core\n%end\n")
            .await
            .unwrap();
        assert_eq!(meta.kind, UnattendedKind::Kickstart);
        assert_eq!(s.len(), 1);
        let got = s.read(&meta.id).await.unwrap();
        assert!(got.starts_with(b"install"));
        // Survives a reload.
        let s2 = UnattendedStore::new(dir.path().join("unattended"));
        s2.load_from_disk().await.unwrap();
        assert!(s2.get(&meta.id).is_some());
        assert!(s2.remove(&meta.id).await);
        assert!(s2.get(&meta.id).is_none());
    }
    #[tokio::test]
    async fn rejects_bad_type_and_oversize() {
        let dir = tempdir().unwrap();
        let s = UnattendedStore::new(dir.path().join("unattended"));
        assert!(s.add("evil.sh", b"#!/bin/sh").await.is_err());
        let big = vec![b'x'; MAX_UNATTENDED_BYTES + 1];
        assert!(s.add("big.ks", &big).await.is_err());
    }
    #[tokio::test]
    async fn ids_are_unique() {
        let dir = tempdir().unwrap();
        let s = UnattendedStore::new(dir.path().join("unattended"));
        let a = s.add("ks.ks", b"install").await.unwrap();
        let b = s.add("ks.ks", b"install").await.unwrap();
        assert_ne!(a.id, b.id);
    }
 }
@@ -9,7 +9,7 @@ use openpxe_core::{
 };
 use openpxe_dhcp_proxy::DhcpProxyServer;
 use openpxe_http_api::{build_router, AppState};
-use openpxe_iso_store::{IsoStore, NfsShareManager, SmbManager, SmbShareManager};
+use openpxe_iso_store::{IsoStore, NfsShareManager, SftpShareManager, SmbManager, SmbShareManager};
 use openpxe_tftp::TftpServer;
 use std::net::{Ipv4Addr, SocketAddr};
 use std::path::PathBuf;
@@ -59,11 +59,10 @@ async fn main() -> anyhow::Result<()> {
    init_tracing(log_bus.clone());
    let cli = Cli::parse();
-    let mut config = match &cli.config {
+    // v0.5.4: layered load via figment — defaults → optional TOML → env.
-        Some(p) if p.exists() => Config::from_toml_file(p)?,
+    // The OPENPXE_* env layer keeps the historical flat names (see
-        _ => Config::default(),
+    // `Config::load`), so existing deployments are unaffected.
-    };
+    let config = Config::load(cli.config.as_deref())?;
    config.apply_env();
    // Dispatch subcommands before bringing up the server.
    if let Some(cmd) = cli.command {
@@ -95,10 +94,25 @@ async fn main() -> anyhow::Result<()> {
            }
        },
    };
-    let public_base_url = format!("http://{our_ip}");
+    // v0.5.6: the advertised base URL must carry the HTTP port. Every
    // client-facing URL (the DHCP-proxy iPXE filename, UEFI HTTP boot,
    // and the menu's kernel/initrd/ISO links) is derived from this one
    // string, so omitting the port silently pointed PXE clients at :80 —
    // breaking every non-80 deployment (e.g. the Unraid template's 4200,
    // chosen to dodge the webGUI). See `build_public_base_url`.
    let public_base_url = build_public_base_url(our_ip, config.server.http_port);
    let iso_store = IsoStore::new(config.paths.iso_dir.clone());
    iso_store.load_from_disk().await?;
    // v0.5.2: unattended answer-file store (Kickstart/Preseed/Autoinstall/
    // Windows answer files). Separate directory from the ISO store.
    let unattended = openpxe_iso_store::UnattendedStore::new(config.paths.unattended_dir.clone());
    if let Err(e) = unattended.load_from_disk().await {
        tracing::warn!(
            target: "openpxe::unattended",
            "could not load unattended files on startup: {e}"
        );
    }
    let clients = ClientRegistry::new();
    let queue = DeploymentQueue::new();
    let settings = SettingsStore::load_or_default(&config.paths.work_dir);
@@ -146,6 +160,19 @@ async fn main() -> anyhow::Result<()> {
        );
    }
    // v0.5.5: SFTP-over-SSH share manager — pure-Rust in-process
    // consumer via `russh` + `russh-sftp` (ring backend, no OpenSSL).
    // The third remote-library protocol alongside SMB/NFS; like NFS it
    // works in any container (no subprocess, no kernel mount) and
    // supports HTTP Range requests because SFTP file handles seek.
    let sftp_shares = SftpShareManager::new(&config.paths.work_dir, iso_store.clone());
    if let Err(e) = sftp_shares.load_and_rescan().await {
        tracing::warn!(
            target: "openpxe::sftp",
            "could not reload SFTP shares on startup: {e}"
        );
    }
    // Sniff network details for the Network tab. None of these are
    // required for PXE to work — they're informational, surfaced in the
    // UI so an operator doesn't have to drop to a shell to find their
@@ -174,6 +201,8 @@ async fn main() -> anyhow::Result<()> {
        smb: Some(smb.clone()),
        smb_shares: smb_shares.clone(),
        nfs_shares: nfs_shares.clone(),
        sftp_shares: sftp_shares.clone(),
        unattended: unattended.clone(),
        uploads: openpxe_http_api::uploads::UploadSessions::default(),
        log_bus: log_bus.clone(),
        started_at: time::OffsetDateTime::now_utc(),
@@ -322,6 +351,20 @@ async fn seed_from_dir(
 /// a loopback address (which would give every PXE client an unreachable
 /// `http://127.0.0.1/...`). Users in multi-homed setups should set
 /// `OPENPXE_PUBLIC_IP` explicitly.
 /// Build the base URL advertised to PXE clients. The port is included
 /// unless it's the HTTP default (80), keeping the common case clean
 /// (`http://10.0.0.5`) while a remapped port (`http://10.0.0.5:4200`)
 /// stays reachable. This is the single source of truth for every
 /// client-facing URL — the DHCP-proxy iPXE filename, UEFI HTTP boot, and
 /// the boot menu's kernel/initrd/ISO links all derive from it.
 fn build_public_base_url(ip: Ipv4Addr, http_port: u16) -> String {
    if http_port == 80 {
        format!("http://{ip}")
    } else {
        format!("http://{ip}:{http_port}")
    }
 }
 fn detect_primary_ipv4() -> Option<Ipv4Addr> {
    // First try: route to the public internet. `UdpSocket::connect` to a
    // well-known external address causes the OS to populate `local_addr`
@@ -455,3 +498,26 @@ fn prefix_to_dotted(prefix: u8) -> String {
        mask & 0xff
    )
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn public_base_url_includes_non_default_port() {
        // The v0.5.6 regression guard: a remapped HTTP port (e.g. the
        // Unraid template's 4200) MUST appear in the advertised URL, or
        // PXE clients fetch :80 — the wrong service — and boot fails.
        let ip: Ipv4Addr = "192.168.1.49".parse().unwrap();
        assert_eq!(build_public_base_url(ip, 4200), "http://192.168.1.49:4200");
        assert_eq!(build_public_base_url(ip, 8080), "http://192.168.1.49:8080");
    }
    #[test]
    fn public_base_url_omits_default_port() {
        // Port 80 stays clean (no `:80`) so the common case reads nicely
        // and matches what every browser/iPXE assumes by default.
        let ip: Ipv4Addr = "10.0.0.5".parse().unwrap();
        assert_eq!(build_public_base_url(ip, 80), "http://10.0.0.5");
    }
 }
@@ -304,6 +304,14 @@ button.ghost { background: transparent; color: var(--fg); border: 1px solid var(
 button.ghost:hover { background: var(--bg-panel-2); color: var(--fg); }
 button.danger { background: transparent; color: var(--err); border: 1px solid color-mix(in srgb, var(--err) 35%, transparent); }
 button.danger:hover { background: color-mix(in srgb, var(--err) 14%, transparent); color: var(--err); }
 /* v0.5.3: unified spacing for a card's primary action button(s). Any
   button that sits as a direct child of a card body (Save, Bind, Add,
   Launch, …) gets the same gap above it so it never butts against the
   form. Inline buttons inside table rows / toolbars / logo slots /
   modal action bars are nested deeper, so the `>` keeps them untouched.
   Adjacent action buttons on one row (e.g. Save + Send test) share the
   margin and stay aligned. */
 .card .body > button { margin-top: 16px; }
 label.field {
  display: grid; gap: 4px; margin-bottom: 14px;
@@ -840,3 +848,67 @@ tr.unbootable td:first-child { border-left: 3px solid var(--warn); }
  border: 1px solid var(--border);
  color: var(--fg-dim);
 }
 /* ── v0.5.2: three-slot branding (light / dark / client) ─────────── */
 .logo-slots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
 }
@media (max-width: 720px) { .logo-slots { grid-template-columns: 1fr; } }
 .logo-slot {
  display: flex; flex-direction: column; gap: 8px;
  padding: 12px;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
 }
 .logo-slot-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
 .logo-slot-head .name { color: var(--fg); font-weight: 600; font-size: 13px; }
 .logo-slot .swatch {
  height: 64px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius);
 }
 .logo-slot .swatch img { max-width: 90%; max-height: 52px; object-fit: contain; }
 .logo-slot-hint { color: var(--fg-dim); font-size: 11.5px; }
 /* ── v0.5.2: login local/SSO separation ─────────────────────────── */
 .auth-card .auth-divider {
  display: flex; align-items: center; text-align: center;
  color: var(--fg-dimmer); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 16px 0 12px;
 }
 .auth-card .auth-divider::before,
 .auth-card .auth-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--border-soft);
 }
 .auth-card .auth-divider span { padding: 0 10px; }
 .auth-card .sso-block .sso-btn { margin-top: 0; }
 .auth-card .sso-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
 }
 .auth-card .sso-btn .sso-logo { width: 16px; height: 16px; object-fit: contain; flex: none; }
 /* ── v0.5.2: modal (queue Profile editor) ───────────────────────── */
 .modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  padding: 24px;
 }
 .modal-box {
  width: 100%; max-width: 520px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 22px;
 }
 .modal-box h2 { margin: 0 0 14px; font-size: 16px; font-weight: 600; color: var(--fg); }
 .modal-actions {
  display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px;
 }
 .modal-actions .submit { width: auto; padding: 8px 18px; }
@@ -13,7 +13,10 @@
       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}}&r={{LOGO_REV}}" />
+  <!-- v0.5.2: favicon is pinned to the bundled OpenPXE mark (its own
       endpoint, decoupled from operator branding) for tab-icon
       continuity regardless of any uploaded light/dark/client logo. -->
  <link rel="icon" type="image/svg+xml" href="/assets/favicon.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. -->
@@ -60,35 +60,41 @@ COPY deploy/ipxe/local/ deploy/ipxe/local/
 RUN mkdir -p assets/ipxe && bash scripts/build-ipxe.sh /src/assets/ipxe
 ########## build openpxe ##########
-FROM rust:${RUST_VERSION}-bookworm AS build
+# v0.5.2: cross-compile the Rust binary NATIVELY — no QEMU.
 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
+# This stage is pinned to $BUILDPLATFORM (the builder's native arch — arm64
-# RUSTFLAGS needed). musl-tools provides the linker.
+# on an Apple-Silicon Mac, amd64 in x86 CI), exactly like `ipxe-build`. The
 # Rust compiler therefore runs at full native speed and emits an
 # x86_64-unknown-linux-musl binary via `cargo-zigbuild`, which uses `zig cc`
 # as the cross-linker (it bundles the musl sysroot for every target, so
 # there's no fiddly cross-gcc toolchain to assemble).
 #
 # Why this replaced the old `FROM rust ... --platform=linux/amd64` build:
 # that ran the *entire* compiler under QEMU x86_64 emulation on the arm64
 # host. It was ~15x slower (a single crate took >20 min) and the emulated
 # gcc/linker intermittently SIGSEGV'd or hung mid-link. Cross-compiling
 # sidesteps emulation entirely — the build is minutes, not half an hour,
 # and is deterministic.
 #
 # The output is still a fully static musl binary with no glibc dependency,
 # so the runtime stage stays free to be any Linux distro.
 FROM --platform=$BUILDPLATFORM rust:${RUST_VERSION}-bookworm AS build
 WORKDIR /src
 # zig (via the `ziglang` pip package — cargo-zigbuild auto-discovers it as
 # `python3 -m ziglang`) supplies the x86_64 musl sysroot + linker.
 # cargo-zigbuild is the thin cargo wrapper that wires zig in as the linker.
 RUN apt-get update \
- && apt-get install -y --no-install-recommends musl-tools \
+ && apt-get install -y --no-install-recommends python3 python3-pip \
 && rm -rf /var/lib/apt/lists/* \
- && rustup target add x86_64-unknown-linux-musl
+ && rustup target add x86_64-unknown-linux-musl \
 && pip3 install --no-cache-dir --break-system-packages ziglang \
 && cargo install --locked cargo-zigbuild
 # 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
 # notice the source swap. A single build is ~1.5 min longer on cold cache
 # but guarantees the binary reflects the sources we copied.
 # Do not copy rust-toolchain.toml into the image. The local workspace pins
 # developer tooling, but inside Docker we intentionally use the Rust version
 # selected by the base image. Copying rust-toolchain.toml with
 # `channel = "stable"` makes rustup download a second full toolchain during
-# `cargo build`, which is slow and can exhaust small Colima/CI disks.
+# the build, which is slow and can exhaust small Colima/CI disks.
 COPY Cargo.toml Cargo.lock ./
 COPY crates/ crates/
 # Baseline binaries (BIOS / i386 / wimboot), then overlay the
@@ -100,13 +106,11 @@ COPY --from=fetch /src/assets/ipxe /src/assets/ipxe
 COPY --from=ipxe-build /src/assets/ipxe/snponly.efi /src/assets/ipxe/snponly.efi
 COPY --from=ipxe-build /src/assets/ipxe/ipxe.efi /src/assets/ipxe/ipxe.efi
-# Cache cargo registry + target across builds. The mtime touch is
+# Cache cargo registry + target across builds. `cargo zigbuild` runs the
-# belt-and-suspenders: cargo occasionally misses mtime-only changes on
+# native rustc (fast) and links for x86_64-musl with zig — no emulation.
 # 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 zigbuild --release --target x86_64-unknown-linux-musl --bin openpxe && \
    cargo build --release --target x86_64-unknown-linux-musl --bin openpxe && \
    cp target/x86_64-unknown-linux-musl/release/openpxe /openpxe && \
    ls -l /openpxe
@@ -0,0 +1,21 @@
 <svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="OpenPXE">
  <title>OpenPXE</title>
  <!-- Static README mark: the "rainbow-horizon" medallion from the web UI,
       with the SMIL animation removed so it renders reliably as an <img>
       on Gitea/GitHub. -->
  <defs>
    <linearGradient id="opxRainbow" x1="0" y1="0" x2="1" y2="0">
      <stop offset="0%"     stop-color="#330f1f"/>
      <stop offset="12.56%" stop-color="#c83228"/>
      <stop offset="25.06%" stop-color="#fb8841"/>
      <stop offset="37.56%" stop-color="#d3dd92"/>
      <stop offset="50.06%" stop-color="#59824f"/>
      <stop offset="62.06%" stop-color="#002414"/>
      <stop offset="74.06%" stop-color="#00143d"/>
      <stop offset="86.06%" stop-color="#2874d7"/>
      <stop offset="100%"   stop-color="#99c2ff"/>
    </linearGradient>
  </defs>
  <circle cx="12" cy="12" r="10.5" fill="url(#opxRainbow)"
          stroke="rgba(0,0,0,0.18)" stroke-width="0.6"/>
 </svg>