Adiciona auto-reload do Chromium via CDP por stream

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- Adicionado scripts/autoreload.sh: loop com reload via WebSocket CDP raw (net + frames manuais), sem dependências externas; trap de SIGTERM encerra limpo sem aguardar o sleep;
- Adicionado [program:autoreload-{{STREAM_ID}}] em stream.template.conf com autostart=false e autorestart=unexpected;
- Adicionados campos AUTO_RELOAD e AUTO_RELOAD_INTERVAL em reprovision.mjs e supervisor.ts (provisionStream);
- Adicionados campos autoReload e autoReloadInterval em src/types/stream.ts;
- Adicionado autoreload nas listas de startStream e stopStream em supervisor.ts; adicionada função applyAutoReload;
- Adicionado endpoint dedicado POST /api/streams/[id]/autoreload: salva, re-provisiona e aplica sem reiniciar o stream inteiro;
- Adicionado toggle + input de intervalo (minutos) no menu de 3 pontos do card em StreamCard.tsx; toggle pill corrigido com posicionamento left absoluto;
- Atualizado README e CHANGELOG com a nova feature;

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CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## Unreleased
+
+### Added
+
+- **Chromium auto-reload** — per-stream toggle to reload the browser page on a configurable interval via Chrome DevTools Protocol. Implemented as a dedicated Supervisord process (`autoreload-{id}`) using a raw WebSocket CDP connection (no external dependencies). Responds cleanly to `supervisorctl stop` via SIGTERM trap. Interval is set in minutes from the card's 3-dot menu and persisted server-side. Toggle applies via `POST /api/streams/{id}/autoreload` without restarting the stream.
+
+---
+
 ## Decap Stream v1.0.0
 
 Turn any web page into an RTMP/HLS stream. Chromium renders the page in a virtual display, ffmpeg captures it, and MediaMTX publishes it, all managed through a web UI.