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

frontend/tsconfig.json

@@ -42,5 +42,9 @@
       {"name": "ts-lit-plugin"},
       {"name": "typescript-lit-html-plugin"}
     ]
-  }
+  },
+  "include": ["src", "wailsjs"],
+  // Wails-generated JS stubs use @ts-check with untyped patterns that
+  // violate strict mode. The companion .d.ts files provide the types.
+  "exclude": ["wailsjs/go/**/*.js"]
 }