feat(release): v2.2.4 — CI fixes (docs-sync, electron fpm, docker)

CI Lint fixes:
- docs/openapi.yaml: bump version 2.2.0 → 2.2.3 (was out of sync with package.json)
- CHANGELOG.md: add '## [Unreleased]' as first section (required by check:docs-sync)

Electron Linux fix:
- electron-release.yml: add 'gem install fpm' step for Linux builds
  fpm is required by electron-builder to package .deb installers;
  ubuntu-latest runners don't have it pre-installed

Docker publish:
- docker-publish.yml: add DOCKER_BUILDKIT_INLINE_CACHE env; prev 502 was
  a transient Docker Hub network error, no code change needed

.github/workflows/docker-publish.yml

@@ -49,6 +49,9 @@ jobs:
             ${{ env.IMAGE_NAME }}:latest
           cache-from: type=gha
           cache-to: type=gha,mode=max
+          no-cache: false
+        env:
+          DOCKER_BUILDKIT_INLINE_CACHE: 1
 
       - name: Inspect image
         run: |

.github/workflows/electron-release.yml

@@ -107,6 +107,10 @@ jobs:
           "
           echo "✓ electron/package.json version set to $VERSION_NO_V"
 
+      - name: Install fpm (Linux .deb packaging tool)
+        if: matrix.platform == 'linux'
+        run: sudo gem install fpm --no-document
+
       - name: Install Electron dependencies
         working-directory: electron
         run: npm install --no-audit --no-fund

CHANGELOG.md

@@ -7,6 +7,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [Unreleased]
+
+---
+
+## [2.2.4] — 2026-03-10
+
+> ### 🔧 CI Fixes
+
+### CI
+
+- **docs-sync fix** — Updated `docs/openapi.yaml` version from `2.2.0` to `2.2.3` (was out of sync with `package.json`, causing CI lint failure)
+- **CHANGELOG format** — Added required `## [Unreleased]` section at top of `CHANGELOG.md` (required by `check:docs-sync` script)
+- **Electron Linux** — Added `gem install fpm` step to `electron-release.yml` Linux build job; `fpm` is required by `electron-builder` to package `.deb` installers but was not pre-installed on `ubuntu-latest` runners
+- **Docker publish** — Added `DOCKER_BUILDKIT_INLINE_CACHE` env; previous `502 error writing layer blob` was a transient Docker Hub network error
+
+---
+
 ## [2.2.3] — 2026-03-10
 
 > ### 🐛 Bug Fixes · 🔧 Reliability

docs/openapi.yaml

@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: OmniRoute API
-  version: 2.2.0
+  version: 2.2.3
   description: |
     OmniRoute is a local-first AI API proxy router. It provides an OpenAI-compatible
     endpoint that routes requests to multiple AI providers with load balancing,

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "2.2.3",
+  "version": "2.2.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "2.2.3",
+      "version": "2.2.4",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "2.2.3",
+  "version": "2.2.4",
   "description": "Smart AI Router with auto fallback — route to FREE & cheap models, zero downtime. Works with Cursor, Cline, Claude Desktop, Codex, and any OpenAI-compatible tool.",
   "type": "module",
   "bin": {