v2.3.0 - self-hosted fonts, per-section info toggles, overlay sync fix

v2.3.0

Added

• Self-hosted Google Fonts (closes #40) — Bebas Neue, Playfair Display, Inter, Anton, Monoton, and Oswald shipped as bundled woff2 files. Survives internet outages with zero CDN dependency.
• Per-section info panel toggles (closes #64) — independent visibility switches for title, subtitle, meta, summary, tech box, and player info. All default ON.
• HA WebSocket subscription + SSE push (closes #10) — server connects to HA's WebSocket API for real-time state changes. Browser falls back to 30s poll instead of 5s polling.
• Poster framing modes (closes #67), film-grain overlay (closes #27), Ken Burns pan (closes #22) — visual polish features.

Fixed

• Film-grain overlay always visible — CSS was missing display: none gate, now gated on body.visual-film-grain
• haWs.stop() never called on graceful shutdown — WebSocket connection leak on restart
• Cross-device config sync: posterFraming, filmGrain, kenBurns were never registered in the overlay store, causing setup UI saves to silently drop them. All 27 visual settings now persist server-side.
• Setup form now has controls for posterFraming, filmGrain, and kenBurns (were env-var only)

Changed

• No more Google Fonts external dependency at runtime — fonts shipped in add-on image