Add PyPI README files and MCP resource/prompt tests

- README.md for all three packages (core, TUI, MCP)
- pyproject.toml readme field for PyPI rendering
- 8 new tests for MCP resources (5) and prompts (3)
- Total MCP test coverage: 57 tests, 37 tools + 5 resources + 3 prompts

mcp/README.md

@@ -0,0 +1,58 @@
+# mcbirdcage
+
+[MCP](https://modelcontextprotocol.io/) server for controlling Winegard satellite dishes through conversational tools. Built on [FastMCP](https://gofastmcp.com/), exposes 36 tools for dish positioning, signal analysis, firmware inspection, and satellite pass planning.
+
+## Install
+
+```bash
+# Add to Claude Code
+claude mcp add mcbirdcage -- uvx mcbirdcage
+
+# Or run standalone
+uvx mcbirdcage
+```
+
+## Demo Mode
+
+No dish required. Set `BIRDCAGE_DEMO=1` to get simulated responses for all tools:
+
+```bash
+BIRDCAGE_DEMO=1 uvx mcbirdcage
+```
+
+## Tools
+
+36 tools across six groups:
+
+| Group | Count | Examples |
+|-------|-------|---------|
+| Connection | 3 | `connect`, `disconnect`, `status` |
+| Movement | 9 | `get_position`, `move_to`, `home_motor`, `stow` |
+| Signal | 8 | `get_rssi`, `enable_lna`, `az_sweep`, `get_lock_status` |
+| System | 11 | `nvs_dump`, `get_firmware_id`, `set_pid_gains`, `get_a3981_diag` |
+| Satellite | 4 | `search_satellites`, `get_passes`, `get_visible_targets` |
+| Console | 1 | `send_raw_command` (direct firmware access) |
+
+Plus 5 resources (hardware specs, NVS reference, firmware docs) and 3 prompts.
+
+## Environment Variables
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `BIRDCAGE_DEMO` | `0` | Enable demo mode (no hardware) |
+| `BIRDCAGE_PORT` | `/dev/ttyUSB0` | Serial port path |
+| `BIRDCAGE_FIRMWARE` | `hal205` | Firmware variant (`hal000`, `hal205`, `g2`) |
+| `BIRDCAGE_CRAFT_URL` | -- | Craft API URL for live satellite TLEs |
+
+## Documentation
+
+Full tool reference and hardware setup: **[birdcage.warehack.ing](https://birdcage.warehack.ing)**
+
+## Credits
+
+- **Gabe Emerson (KL1FI / [saveitforparts](https://github.com/saveitforparts))** -- original Winegard rotor scripts
+- **Chris Davidson ([cdavidson0522](https://github.com/cdavidson0522))** -- Carryout G2 sky scan and rotator control
+
+## License
+
+MIT