chore: prepare yanting monorepo handoff

.gitignore

@@ -0,0 +1,49 @@
+# Local/private agent overlays
+AGENTS.local.md
+CURRENT_STATUS.md
+docs.jimme.local/
+docs.*.local/
+
+# Secrets and local env
+.env
+*.env.local
+
+# Python
+report-notebooklm-api/.venv/
+report-notebooklm-api/.pytest_cache/
+report-notebooklm-api/.mypy_cache/
+report-notebooklm-api/**/*.pyc
+report-notebooklm-api/**/__pycache__/
+report-notebooklm-api/*.db
+report-notebooklm-api/*.egg-info/
+
+# Flutter / Dart
+report-notebooklm-app/.dart_tool/
+report-notebooklm-app/.flutter-plugins-dependencies
+report-notebooklm-app/.pub-cache/
+report-notebooklm-app/.pub/
+report-notebooklm-app/build/
+report-notebooklm-app/coverage/
+
+# Android local/generated
+report-notebooklm-app/android/.gradle/
+report-notebooklm-app/android/local.properties
+report-notebooklm-app/android/app/debug/
+report-notebooklm-app/android/app/profile/
+report-notebooklm-app/android/app/release/
+report-notebooklm-app/**/*.apk
+report-notebooklm-app/**/*.jks
+report-notebooklm-app/**/*.keystore
+report-notebooklm-app/android/key.properties
+
+# IDE / OS noise
+.DS_Store
+**/.DS_Store
+.idea/
+*.iml
+.vscode/
+
+# Build artifacts
+build/
+dist/
+coverage/