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

build.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# Manual multi-arch build + push fallback when Gitea Actions isn't available.
+#
+# One-time setup:
+#   docker buildx create --name multi --use
+#   docker run --privileged --rm tonistiigi/binfmt --install all
+#
+# Auth:
+#   docker login rg.nl-ams.scw.cloud -u nologin -p <SCW_SECRET_KEY>
+#
+# Usage:
+#   ./build.sh                 # tags :latest and :<short-sha>
+#   TAG=v0.2.0 ./build.sh      # additional explicit tag
+
+set -euo pipefail
+
+REGISTRY="${REGISTRY:-rg.nl-ams.scw.cloud/valinor}"
+IMAGE="${REGISTRY}/finrod"
+SHA="$(git rev-parse --short HEAD)"
+TAGS=(-t "${IMAGE}:latest" -t "${IMAGE}:${SHA}")
+if [[ -n "${TAG:-}" ]]; then
+    TAGS+=(-t "${IMAGE}:${TAG}")
+fi
+
+cd "$(dirname "$0")"
+
+docker buildx build \
+    --platform linux/amd64,linux/arm64 \
+    "${TAGS[@]}" \
+    --push \
+    .
+
+echo
+echo "Pushed: ${IMAGE}:{latest,${SHA}${TAG:+,${TAG}}}"