initial commit: FastAPI translator proxying to Ollama on radagast

- app.py: /api/models filtered to gemma+aya, /api/translate streams
  NDJSON from Ollama with stream:true, /healthz for k8s probes
- static/index.html: dark-mode UI, three dropdowns (source/target/model),
  live token streaming with spinner+pulse+timer indicators
- Dockerfile: two-stage uv build, slim Python 3.13 runtime
- .gitea/workflows/build.yml: multi-arch (amd64+arm64) build, push to
  Scaleway registry on push to main
- build.sh: manual fallback if Gitea Actions isn't available

.gitea/workflows/build.yml

@@ -0,0 +1,46 @@
+name: build-and-push
+
+on:
+  push:
+    branches: [main]
+    tags: ["v*"]
+  workflow_dispatch: {}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU (for arm64 emulation)
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Scaleway registry
+        uses: docker/login-action@v3
+        with:
+          registry: rg.nl-ams.scw.cloud
+          username: nologin
+          password: ${{ secrets.SCW_SECRET_KEY }}
+
+      - name: Compute tags
+        id: tags
+        run: |
+          SHORT_SHA="${GITHUB_SHA::7}"
+          {
+            echo "short_sha=${SHORT_SHA}"
+          } >> "$GITHUB_OUTPUT"
+
+      - name: Build & push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            rg.nl-ams.scw.cloud/valinor/finrod:latest
+            rg.nl-ams.scw.cloud/valinor/finrod:${{ steps.tags.outputs.short_sha }}
+          provenance: false