Add analytical radiation pattern models for 5 antenna types (dipole, monopole,
EFHW, loop, patch) driven by S11 impedance measurements. Pure Python math with
closed-form far-field equations — no numpy or simulation dependencies.
New MCP tools:
- radiation_pattern: scan S11 → find resonance → compute 3D pattern
- radiation_pattern_from_data: compute from known impedance (no hardware)
- radiation_pattern_multi: patterns across a frequency band for animation
Web UI (opt-in via MCNANOVNA_WEB_PORT env var):
- Three.js gain-mapped sphere with OrbitControls
- Surface/wireframe/plane cut display modes with teal→amber color ramp
- Smith chart overlay, dBi reference rings, E/H plane cross-sections
- Real-time WebSocket push on new pattern computation
- FastAPI backend shares process with MCP server, zero new core deps
Frontend: Vite + TypeScript + Three.js, built assets committed to webui/static/.
Optional dependencies: fastapi + uvicorn via pip install mcnanovna[webui].
- Add Pillow dependency for server-side RGB565→PNG conversion
- capture() now returns fastmcp Image (PNG) by default
- Pass raw=True to get the original RGB565 base64 dict
- Eliminates 204K token overflow on default capture calls
