feat: add meeting transcription app scaffolding

- Add Python backend structure with FastAPI for transcription/summarization
- Add React UI with audio recording, transcript, and summary views
- Configure Tauri to manage Python backend lifecycle
- Set up Windows cross-compilation with cargo-xwin
- Add Gitea CI workflow for lint, test, and multi-platform builds
- Configure ESLint, Prettier, and Vitest for code quality

Note: App scaffolding only - Python env and models not yet set up

.gitignore

@@ -22,3 +22,33 @@ dist-ssr
 *.njsproj
 *.sln
 *.sw?
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+ENV/
+.venv/
+*.egg-info/
+
+# Models (we'll add these to git lfs later)
+models/*.gguf
+models/*.bin
+
+# Tauri
+src-tauri/target/
+src-tauri/WixTools/
+
+# App data
+recordings/
+transcripts/
+summaries/
+
+# Environment
+.env
+*.env.local
+prod.env