phase 2: ui testing infrastructure

Vitest + @testing-library/jest-dom matchers wired through tests/setup.ts.
Playwright with four projects: chromium-desktop, webkit-desktop,
chromium-mobile-iphone-13, chromium-mobile-pixel-5; traces and
screenshots retained on failure.

.gitea/workflows/ui-test.yaml runs Tier 1 on every push and pull
request: monorepo Go service tests (backend with -p 1 to dodge
testcontainer contention; gateway, game, every pkg/<name> module),
pnpm install --frozen-lockfile, playwright install --with-deps,
pnpm test, pnpm exec playwright test. Uploads playwright-report
and test-results on failure. Integration suite stays gated behind
make -C integration integration; deprecated client/ excluded.

.gitea/workflows/ui-release.yaml mirrors Tier 1 on v* tag push and
keeps commented placeholders for visual regression (Phase 33) and
macOS iOS smoke (Phase 32).

ui/docs/testing.md documents both tiers and the local invocations
that mirror what CI runs. ui/PLAN.md Phase 2 marked done; Phase 3
gains a bullet to extend the go test command with ./ui/core/...;
Phase 36 has the renamed release workflow path.

tools/local-ci/ ships a self-contained docker-compose for verifying
workflows against a local Gitea + arm64 act_runner before pushing
to a real instance.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/ui-release.yaml

@@ -0,0 +1,145 @@
+name: ui-release
+
+# Tier 2 (release) workflow. Runs on tag push.
+#
+# Currently mirrors the Tier 1 step set. Visual regression baseline
+# checks and the macOS-runner iOS smoke job are landed in later phases
+# of ui/PLAN.md and live as commented sections at the end of this file
+# until those phases ship.
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.work
+          cache: true
+
+      - name: Run Go tests
+        # client/ is the deprecated Fyne client; excluded from CI per
+        # ui/PLAN.md §74. -count=1 disables Go's test cache so a green
+        # run never depends on a previous runner's cached state. The
+        # backend suite is run with -p 1 because most backend packages
+        # spawn their own Postgres testcontainer, and parallel
+        # Postgres bootstraps starve each other on a constrained
+        # runner. pkg modules are listed one by one because ./pkg/...
+        # does not recurse across the independent go.work modules
+        # under pkg/.
+        run: |
+          go test -count=1 -p 1 ./backend/...
+          go test -count=1 \
+            ./gateway/... \
+            ./game/... \
+            ./pkg/calc/... \
+            ./pkg/connector/... \
+            ./pkg/cronutil/... \
+            ./pkg/error/... \
+            ./pkg/geoip/... \
+            ./pkg/model/... \
+            ./pkg/postgres/... \
+            ./pkg/redisconn/... \
+            ./pkg/schema/... \
+            ./pkg/storage/... \
+            ./pkg/transcoder/... \
+            ./pkg/util/...
+
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 11.0.7
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+          cache-dependency-path: ui/pnpm-lock.yaml
+
+      - name: Install npm dependencies
+        working-directory: ui
+        run: pnpm install --frozen-lockfile
+
+      - name: Install Playwright browsers
+        working-directory: ui/frontend
+        run: pnpm exec playwright install --with-deps
+
+      - name: Run Vitest
+        working-directory: ui/frontend
+        run: pnpm test
+
+      - name: Run Playwright
+        working-directory: ui/frontend
+        run: pnpm exec playwright test
+
+      - name: Upload Playwright report on failure
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-report
+          path: ui/frontend/playwright-report/
+          retention-days: 14
+
+      - name: Upload Playwright traces on failure
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-traces
+          path: ui/frontend/test-results/
+          retention-days: 14
+
+# visual-regression: enabled in Phase 33 of ui/PLAN.md, once the PWA
+# shell and service worker land and a snapshot baseline is committed
+# under ui/frontend/tests/__snapshots__/.
+#
+#  visual-regression:
+#    runs-on: ubuntu-latest
+#    needs: test
+#    steps:
+#      - uses: actions/checkout@v4
+#      - uses: pnpm/action-setup@v4
+#        with: { version: 11.0.7 }
+#      - uses: actions/setup-node@v4
+#        with:
+#          node-version: 22
+#          cache: pnpm
+#          cache-dependency-path: ui/pnpm-lock.yaml
+#      - working-directory: ui
+#        run: pnpm install --frozen-lockfile
+#      - working-directory: ui/frontend
+#        run: pnpm exec playwright install --with-deps
+#      - working-directory: ui/frontend
+#        run: pnpm exec playwright test --grep @visual
+
+# ios-smoke: enabled in Phase 32 of ui/PLAN.md, once the Capacitor
+# wrapper lands. Runs a Capacitor + Appium smoke against an iOS
+# simulator on a macOS runner.
+#
+#  ios-smoke:
+#    runs-on: macos-13
+#    needs: test
+#    steps:
+#      - uses: actions/checkout@v4
+#      - uses: pnpm/action-setup@v4
+#        with: { version: 11.0.7 }
+#      - uses: actions/setup-node@v4
+#        with:
+#          node-version: 22
+#          cache: pnpm
+#          cache-dependency-path: ui/pnpm-lock.yaml
+#      - working-directory: ui
+#        run: pnpm install --frozen-lockfile
+#      - working-directory: ui/mobile
+#        run: pnpm exec cap sync ios && pnpm exec appium-smoke ios