Refactor GUI plan formatting

GUI plan.md

@@ -1,11 +1,12 @@
+# GUI Plan
 
-### Python-first Desktop Architecture
+## Python-first Desktop Architecture
 
 - **Primary GUI framework**: `PySide6` (Qt for Python).
 - **Communication Layer**: A local `FastAPI` backend to separate core logic from the UI.
 - **IPC Mechanism**: The GUI spawns the FastAPI server on a random high port (binding to `127.0.0.1` ONLY) and communicates via REST/WebSockets.
 
-### Core Features to Implement
+## Core Features to Implement
 
 1. **Dashboard Overview**: List all tracked playlists, their status (Last Sync), and total size.
 2. **Interactive Configuration**: Wizard-style setup for new playlists (URL detection, folder picker).
@@ -13,21 +14,21 @@
 4. **Log Viewer**: Real-time streaming of yt-dlp logs for troubleshooting.
 5. **Settings Panel**: Global settings for binary paths (ffmpeg, aria2c), max parallel jobs, and Docker detection toggle.
 
-### Phase 1 Roadmap: "The Bridge"
+## Phase 1 Roadmap: "The Bridge"
 
 - [ ] **Refactor `src/manager.py`**: Convert CLI-first execution to async-compatible methods for FastAPI consumption.
 - [ ] **FastAPI Integration**: Create endpoints for `/playlists`, `/status`, and `/download/start`.
 - [ ] **PySide6 Skeleton**: Basic window with `QWebEngine` (if hybrid) or native `QWidget` dashboard.
 - [ ] **Packaging**: `pyinstaller` configuration to bundle both backend and frontend into a single `.exe`.
 
-### Packaging & Distribution (brief)
+## Packaging & Distribution (brief)
 
 - Bundle the backend and GUI into one distributable. The GUI should spawn the local API process (background subprocess) on startup.
 - Windows: use `pyinstaller` or `briefcase` to create an executable/installer. Consider creating an MSI or Inno Setup installer for a polished UX.
 - Linux: provide AppImage, Snap, or distribution-specific packages (deb/rpm) — AppImage is a good starting point for single-file distribution.
 - Security: bind the local API to `localhost` only, use a short-lived token or IPC for authentication between GUI and backend, and avoid exposing unnecessary ports.
 
-### Roadmap (GUI → Web → Mobile)
+## Roadmap (GUI → Web → Mobile)
 
 1. Desktop prototype: `FastAPI` backend + `PySide6` GUI (thin client) with basic playlist add/update/download controls and status streaming.
 2. Packaging: create Windows exe/installer and Linux AppImage for the prototype.