Initial agent-news: Dart Telegram bot + Claude Code runner + MCP bridge

/news spawns claude-code as a local subprocess (single pod, no cross-container
exec on K3s); Claude delivers the digest itself via the send_to_telegram MCP tool.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitea/workflows/build.yaml

@@ -0,0 +1,37 @@
+name: Build & Deploy
+
+on:
+  push:
+    branches: [main]
+
+env:
+  REGISTRY: registry.service.bearsdev.tech
+  IMAGE: agent-news
+  REPO: platformteam-projects/agent-news
+
+jobs:
+  build:
+    runs-on: [ubuntu-latest]
+    steps:
+      - name: Build & Push
+        run: |
+          git clone https://gitea_admin:${{ secrets.CI_TOKEN }}@gitea.service.bearsdev.tech/${{ env.REPO }}.git app
+          cd app && git checkout ${{ gitea.sha }}
+          echo "${{ secrets.NEXUS_PASSWORD }}" | docker login ${{ env.REGISTRY }} -u "${{ secrets.NEXUS_USERNAME }}" --password-stdin
+          docker buildx build \
+            --builder default \
+            -f runner/Dockerfile \
+            -t ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ gitea.run_number }} \
+            -t ${{ env.REGISTRY }}/${{ env.IMAGE }}:latest \
+            --push .
+
+      - name: Update deploy repo
+        run: |
+          git clone https://gitea_admin:${{ secrets.CI_TOKEN }}@gitea.service.bearsdev.tech/deploy/${{ env.IMAGE }}.git deploy
+          cd deploy
+          sed -i "s|image: ${{ env.REGISTRY }}/${{ env.IMAGE }}:.*|image: ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ gitea.run_number }}|" deployment.yaml
+          git config user.email "ci@bearsdev.tech"
+          git config user.name "Gitea CI"
+          git add deployment.yaml
+          git commit -m "ci: update image to ${{ env.IMAGE }}:${{ gitea.run_number }}" || echo "no changes"
+          git push https://gitea_admin:${{ secrets.DEPLOY_TOKEN }}@gitea.service.bearsdev.tech/deploy/${{ env.IMAGE }}.git main