ci: add disabled Gitea Actions CI/CD workflows

Add CI and CD workflows for backend, frontend and image publishing. The workflows are fully commented out because no Gitea Actions runner is attached; uncomment once a runner is registered.

.gitea/workflows/ci.yml

@@ -0,0 +1,46 @@
+# CI workflow — DISABLED.
+# No Gitea Actions runner is attached to this repository yet, so the workflow
+# below is fully commented out to avoid failing runs. Uncomment everything once
+# a runner is registered (repository Settings -> Actions -> Runners).
+
+# name: CI
+#
+# on:
+#   push:
+#     branches: [main]
+#   pull_request:
+#     branches: [main]
+#
+# jobs:
+#   backend:
+#     runs-on: ubuntu-latest
+#     steps:
+#       - uses: actions/checkout@v4
+#       - uses: actions/setup-dotnet@v4
+#         with:
+#           dotnet-version: "10.0.x"
+#       - name: Restore
+#         run: dotnet restore backend/TarninaHub.csproj
+#       - name: Build
+#         run: dotnet build backend/TarninaHub.csproj --configuration Release --no-restore
+#       - name: Format check
+#         run: dotnet format backend/TarninaHub.csproj --verify-no-changes
+#       # Tests: enabled once test projects are added (`dotnet test`).
+#
+#   frontend:
+#     runs-on: ubuntu-latest
+#     defaults:
+#       run:
+#         working-directory: client
+#     steps:
+#       - uses: actions/checkout@v4
+#       - uses: actions/setup-node@v4
+#         with:
+#           node-version: "22"
+#           cache: npm
+#           cache-dependency-path: client/package-lock.json
+#       - name: Install
+#         run: npm ci
+#       - name: Build (typecheck + bundle)
+#         run: npm run build
+#       # Lint: enabled once ESLint is wired up (`npm run lint`).