fix(ci): resolve CI failures for Go checks, codegen, and frontend type-checking

- Add frontend/dist stub in Go Checks and Go Tests jobs so the
  go:embed directive in main.go resolves without a real frontend build
- Run go mod tidy to add missing go.sum entries for templ/sqlc tool
  transitive dependencies (fixes Code Generation Check)
- Delete dead library-picker.ts that imported non-existent Wails
  bindings module and called undefined functions
- Exclude Wails-generated JS stubs from tsc strict checking via
  tsconfig exclude (the companion .d.ts files provide types)
- Add title and artist fields to QueueTrack interface to match the
  Go backend struct and fix queue-panel.ts type errors

.github/workflows/ci.yml

@@ -61,6 +61,11 @@ jobs:
       - name: Install system dependencies
         run: sudo apt-get update && sudo apt-get install -y libasound2-dev libgtk-3-dev libwebkit2gtk-4.1-dev
 
+      # The go:embed directive in main.go requires frontend/dist to exist.
+      # A stub suffices for vet/lint; the real build is verified separately.
+      - name: Create frontend dist stub
+        run: mkdir -p frontend/dist && touch frontend/dist/index.html
+
       - name: Go mod verify
         run: go mod verify
 
@@ -95,6 +100,10 @@ jobs:
       - name: Install system dependencies
         run: sudo apt-get update && sudo apt-get install -y libasound2-dev libgtk-3-dev libwebkit2gtk-4.1-dev
 
+      # The go:embed directive in main.go requires frontend/dist to exist.
+      - name: Create frontend dist stub
+        run: mkdir -p frontend/dist && touch frontend/dist/index.html
+
       - name: Run tests
         run: go test -tags webkit2_41 -race -count=1 -timeout 120s ./...