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/tests/test_prompts.py

@@ -0,0 +1,40 @@
+"""Tests for MCP prompts (setup_wizard, satellite_tracking_guide, rf_sweep_guide)."""
+
+import pytest
+from fastmcp import Client
+
+
+@pytest.mark.anyio
+async def test_setup_wizard_prompt(mcp_client: Client):
+    result = await mcp_client.get_prompt("setup_wizard")
+
+    assert result.messages, "setup_wizard returned no messages"
+    text = result.messages[0].content.text
+    assert len(text) > 0
+    assert "connect" in text.lower()
+    assert "home_motor" in text
+    assert "get_position" in text
+
+
+@pytest.mark.anyio
+async def test_satellite_tracking_guide_prompt(mcp_client: Client):
+    result = await mcp_client.get_prompt("satellite_tracking_guide")
+
+    assert result.messages, "satellite_tracking_guide returned no messages"
+    text = result.messages[0].content.text
+    assert len(text) > 0
+    assert "search_satellites" in text
+    assert "get_passes" in text
+    assert "move_to" in text
+
+
+@pytest.mark.anyio
+async def test_rf_sweep_guide_prompt(mcp_client: Client):
+    result = await mcp_client.get_prompt("rf_sweep_guide")
+
+    assert result.messages, "rf_sweep_guide returned no messages"
+    text = result.messages[0].content.text
+    assert len(text) > 0
+    assert "enable_lna" in text
+    assert "get_rssi" in text
+    assert "az_sweep" in text