feat: add reusable CI/CD pipeline templates

Reusable Gitea Actions workflows for lint, test, build, and deploy:
- lint-python, lint-node, lint-rust
- test-python, test-node, test-rust
- build-push (Docker build + push to Gitea registry)
- deploy-k8s (GitOps image tag update in cluster repo)

Plus example caller workflows for python-fullstack, rust-service,
and node-frontend stacks. Branch refs aligned to staging per CON-570 standards.

examples/rust-service/build-deploy.yml

@@ -0,0 +1,35 @@
+# Example build & deploy workflow for a Rust service
+# Place in your repo at: .gitea/workflows/build-deploy.yml
+name: Build & Deploy
+
+on:
+  push:
+    branches: [main]
+
+concurrency:
+  group: deploy-${{ gitea.ref }}
+  cancel-in-progress: true
+
+jobs:
+  ci:
+    uses: ./.gitea/workflows/ci.yml
+
+  build:
+    needs: ci
+    uses: wectrl-net/ci-templates/.gitea/workflows/build-push.yaml@main
+    with:
+      image-name: git.wectrl.net/wectrl-net/wectrl-telemetry
+    secrets:
+      REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
+      REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+
+  deploy:
+    needs: build
+    uses: wectrl-net/ci-templates/.gitea/workflows/deploy-k8s.yaml@main
+    with:
+      image-name: git.wectrl.net/wectrl-net/wectrl-telemetry
+      service-name: wectrl-telemetry
+      deploy-paths: "platform/components/wectrl-telemetry/deployment.yaml"
+    secrets:
+      GIT_USER: ${{ secrets.GIT_USER }}
+      GIT_TOKEN: ${{ secrets.GIT_TOKEN }}