v0.3.0 — rebrand: PXEForge → OpenPXE, Gated → Queued Deployment

Full rename to match the openpxe.com brand. The product now reads as a
polished open-source project rather than a personal-tool nickname:
the anvil/forge metaphor is gone, replaced with the rainbow-horizon
brand mark from the marketing site.

## Naming changes

**PXEForge → OpenPXE** everywhere it's user-visible or developer-
facing:
- All 8 crate package names (`pxeforge-*` → `openpxe-*`).
- The bin crate dir + binary (`crates/pxeforge` → `crates/openpxe`,
  `bin = "openpxe"`).
- Env vars: `PXEFORGE_*` → `OPENPXE_*` (no compat shim — pre-beta).
- Tracing targets: `pxeforge::*` → `openpxe::*`.
- Prometheus metrics: `pxeforge_*` → `openpxe_*` (pre-beta; nobody
  has dashboards on these yet).
- Container image: `gitea.milesward.dev/mward4/openpxe:0.3.0`.
- All in-tree paths: `/var/lib/openpxe/{isos,work,smb}`,
  `/usr/share/openpxe/ipxe`, `/etc/openpxe/...`.
- Unraid template renamed `pxeforge.xml` → `openpxe.xml`.
- README, NEXT_PHASE.md, architecture.md, comments, and the WebUI
  brand string.

**Gated Deployment → Queued Deployment** as the user-facing concept:
- `Settings::TimeoutAction::GatedDeployment` →
  `QueuedDeployment` (with `#[serde(alias = "gated_deployment")]`
  so v0.2.0 settings.json files keep deserializing).
- Rust types: `Gate` → `QueueEntry`, `GateQueue` → `DeploymentQueue`,
  `GateInner` → `QueueEntryInner`.
- File: `crates/core/src/gate.rs` → `crates/core/src/queue.rs`.
- HTTP routes: `/api/gate/*` → `/api/queue/*`. The JSON list key
  flipped from `"gates"` to `"entries"` to match.
- iPXE shortcut: `/boot/_gate.ipxe` → `/boot/_queue.ipxe`. The
  top-level menu's item id is now `queue` instead of `gate`.
- WebUI sidebar tab: "Forge Gate" → "Queue".
- Field on `AppState`: `gates` → `queue`.

## Brand assets

The anvil + forging-sparks logos are dropped:
- `logo.svg` is now a 24×24 medallion filled with the
  `rainbow-horizon` gradient from openpxe.com (sliding hue rotation
  via SMIL on the gradient stops, no JS needed).
- `anvil-forge.svg` renamed to `loader.svg` and rebuilt as a 64×64
  louder version of the same disc — used for page-load transitions
  and the imaging-progress widget. Adds a subtle scale pulse and a
  white inner-glow so it has dimensionality on either theme.

## CSS rename

- `.forge-progress` → `.queue-progress`
- `.forge-progress .anvil` → `.queue-progress .mark`
- `@keyframes forge-sheen` → `queue-sheen`
- `.loader .anvil` → `.loader .mark`
- "Heating the forge…" loader text → "Loading…"

The rest of the layout is untouched. Light/dark theme tokens and the
sidebar/topbar structure carry over from v0.2.0 unchanged — the
brief was "keeping the UI similar."

## Validation

- `cargo build --workspace` — clean.
- `cargo clippy --workspace --all-targets` — no warnings.
- `cargo test --workspace` — **66 tests passing**, same as v0.2.0.
- Local smoke run against the rebuilt release binary verifies:
  - `/boot.ipxe` emits `Queued Deployment` + `item queue` + chains
    `/boot/_queue.ipxe`
  - `/api/queue` returns `{count, entries}`
  - `/metrics` emits `openpxe_queue_count` (renamed)
  - `/assets/logo.svg` and `/assets/loader.svg` serve the new
    rainbow brand SVGs
  - `/api/status` reports version `0.3.0`

## Migration notes for operators on v0.2.0

- Container image path changed: pull
  `gitea.milesward.dev/mward4/openpxe:0.3.0` (not `pxeforge:`).
- Bind mounts: `/var/lib/openpxe/{isos,work,smb}` (not `pxeforge`).
  Move the host path or update the template.
- Env vars: replace `PXEFORGE_*` with `OPENPXE_*`. The Unraid
  template at `deploy/unraid/openpxe.xml` is already updated.
- `settings.json` carries over transparently — the
  `gated_deployment` value is accepted as an alias.
- HTTP API: any external scripts that hit `/api/gate/*` need to
  switch to `/api/queue/*`. The JSON envelope key is `entries`
  instead of `gates`.

crates/dhcp-proxy/src/reply.rs

@@ -9,7 +9,7 @@
 //!     pass, or the HTTP URL of the boot script once iPXE has chained.
 
 use dhcproto::v4::{DhcpOption, Message, MessageType, Opcode, OptionCode};
-use pxeforge_core::{ClientArch, FirmwareClass};
+use openpxe_core::{ClientArch, FirmwareClass};
 use std::net::Ipv4Addr;
 
 /// Where the reply directs the client next.

crates/dhcp-proxy/src/server.rs

@@ -4,7 +4,7 @@
 use crate::reply::{build_reply, decide, BootDirective, ReplyContext};
 use dhcproto::v4::{DhcpOption, Message, OptionCode};
 use dhcproto::{Decodable, Decoder, Encodable, Encoder};
-use pxeforge_core::{
+use openpxe_core::{
     ClientArch, ClientEvent, ClientRegistry, FirmwareClass,
 };
 use socket2::{Domain, Protocol, Socket, Type};
@@ -19,7 +19,7 @@ pub struct DhcpProxyServer {
     our_ip: Ipv4Addr,
     public_base_url: String,
     clients: Arc<ClientRegistry>,
-    metrics: pxeforge_core::Metrics,
+    metrics: openpxe_core::Metrics,
 }
 
 impl DhcpProxyServer {
@@ -30,7 +30,7 @@ impl DhcpProxyServer {
         our_ip: Ipv4Addr,
         public_base_url: String,
         clients: Arc<ClientRegistry>,
-        metrics: pxeforge_core::Metrics,
+        metrics: openpxe_core::Metrics,
     ) -> Self {
         Self {
             bind,
@@ -47,7 +47,7 @@ impl DhcpProxyServer {
         let dhcp_sock = bind_udp(self.bind, self.dhcp_port, true)?;
         let pxe_sock = bind_udp(self.bind, self.pxe_port, false)?;
         tracing::info!(
-            target: "pxeforge::dhcp",
+            target: "openpxe::dhcp",
             "DHCP proxy listening on {}:{} and :{}",
             self.bind, self.dhcp_port, self.pxe_port
         );
@@ -67,12 +67,12 @@ impl DhcpProxyServer {
             let (n, from) = match sock.recv_from(&mut buf).await {
                 Ok(v) => v,
                 Err(e) => {
-                    tracing::warn!(target: "pxeforge::dhcp", port=label, "recv error: {e}");
+                    tracing::warn!(target: "openpxe::dhcp", port=label, "recv error: {e}");
                     continue;
                 }
             };
             if let Err(e) = self.handle_datagram(&sock, &buf[..n], from, label).await {
-                tracing::warn!(target: "pxeforge::dhcp", port=label, "handle error: {e}");
+                tracing::warn!(target: "openpxe::dhcp", port=label, "handle error: {e}");
             }
         }
     }
@@ -128,7 +128,7 @@ impl DhcpProxyServer {
         if matches!(directive, BootDirective::Ignore) {
             self.metrics.record_dhcp_decline();
             tracing::debug!(
-                target: "pxeforge::dhcp",
+                target: "openpxe::dhcp",
                 mac=%mac, arch=?arch, "ignoring — no bootfile for arch"
             );
             return Ok(());
@@ -142,7 +142,7 @@ impl DhcpProxyServer {
         let dest = reply_destination(&request, from);
         sock.send_to(&out, dest).await?;
         tracing::info!(
-            target: "pxeforge::dhcp",
+            target: "openpxe::dhcp",
             mac=%mac, arch=arch.as_str(), class=?class, dest=%dest, directive=?directive,
             "PXE reply sent"
         );