fix #16: cleanup - remove old/dead code and update docs

- Delete apps/telegram-bot/storage.py (replaced by adapters/storage/json_file.py)
- Delete apps/telegram-bot/__init__.py (empty file)
- Delete apps/telegram-bot/requirements-dev.txt (dev deps in pyproject.toml)
- Update SPEC.md with new hexagonal architecture (core, adapters, apps)
- Update SPEC.md command reference: /update -> /edit
- Update README.md with new project structure and quick start
- Update CONTRIBUTING.md with new architecture and dev setup

README.md

@@ -22,14 +22,33 @@ A bounty tracking platform. Currently ships with a Telegram bot for managing and
 
 ```
 jigaido/
+├── core/                    # Domain layer (pure Python, no external deps)
+│   ├── models.py            # Domain dataclasses (Bounty, Tracking)
+│   ├── ports.py             # Port interfaces
+│   └── services.py          # Domain services
+├── adapters/                # Infrastructure adapters
+│   └── storage/
+│       └── json_file.py     # JSON file storage implementation
 ├── apps/
-│   └── telegram-bot/   ← first app (Python)
-│       ├── bot.py
-│       ├── commands.py
-│       ├── cron.py
-│       ├── db.py
-│       └── requirements.txt
-└── SPEC.md             ← full design specification
+│   └── telegram-bot/        # Telegram bot CLI application
+│       ├── bot.py            # Bot entry point
+│       └── commands.py       # Command handlers
+├── tests/                   # Unit tests
+├── config.py               # Configuration management
+└── SPEC.md                 # Full design specification
+```
+
+## Quick Start
+
+```bash
+# Install dependencies
+pip install -r apps/telegram-bot/requirements.txt
+
+# Set bot token
+export JIGAIDO_BOT_TOKEN="your_bot_token"
+
+# Run bot
+python -m apps.telegram-bot.bot
 ```
 
 ## License