feat: low-latency RTSP mode + PR Docker CI

.github/workflows/docker-ghcr.yml

@@ -5,6 +5,10 @@ on:
     branches: [master]
     tags: ["v*", "*.*.*"]
 
+concurrency:
+  group: docker-ghcr-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}

.github/workflows/docker-pr.yml

@@ -0,0 +1,66 @@
+name: Docker PR Build
+
+on:
+  pull_request:
+    types: [opened, synchronize, labeled]
+
+concurrency:
+  group: docker-pr-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    # Only run when the PR has the 'run-ci' label
+    if: contains(github.event.pull_request.labels.*.name, 'run-ci')
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Sanitize branch name
+        id: branch
+        run: |
+          RAW="${{ github.head_ref }}"
+          CLEAN=$(echo "$RAW" | sed 's/[^a-zA-Z0-9._-]/-/g')
+          echo "name=$CLEAN" >> "$GITHUB_OUTPUT"
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha,prefix=,format=short
+            type=raw,value=${{ steps.branch.outputs.name }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          build-args: |
+            VERSION=${{ steps.branch.outputs.name }}
+            REPO=${{ github.repository }}
+            OWNER=${{ github.repository_owner }}

.gitignore

@@ -28,3 +28,8 @@ token.toml
 
 # Debug FCM build
 crates/fcm-push-listener
+
+# Planning and docs (local only)
+.planning/
+docs/plans/
+tmp/