[Feature Request] Support for local LLM models as alternative to Anthropic API

**Bug Description**
NEVER AGAIN ANI SUBSCRIPTIONS FOR ANTROPHIC NEEEEEEEEEEEEEEEEEEEEEEVVVVVVVVVVVVVVVVVVERRRRRRRRRRRRRRRRRRRRRRRR THATS FUCKING ANNOING EVERING IN EVERY MODEL TURNS OUT IN TO HORROBIL WORK DEMOLATION ... 3 VAULTS 3 LOCAL LLMS and NO FUCKING WAY TO MAKEEEEEEEEEEE ONLY 1111111111111111 FUCKING TASK FROM ME TO FUCKING FINISCH !!!!!!!!!!!!!!!!!!!!!!!!!! GPOOOOOOOOOOOOOOOOD BYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

**Environment Info**
- Platform: win32
- Terminal: xterm-256color
- Version: 2.1.274
- Feedback ID: bd7093c2-dd77-47b0-93cb-491abbfb86f2

**Errors**
```json
[{"error":"TelemetrySafeError: VirtualMessageList: itemKeys/messages length desync (keys=555 messages=554 range=[529,555))\n at D7t (B:/~BUN/root/chunk-6wq91xrg.js:37:30963)\n at Lke (B:/~BUN/root/chunk-6wq91xrg.js:37:21857)\n at nu (B:/~BUN/root/chunk-y6sv21ep.js:18:20036)\n at gu (B:/~BUN/root/chunk-y6sv21ep.js:18:38202)\n at Cm (B:/~BUN/root/chunk-y6sv21ep.js:18:84284)\n at Bg (B:/~BUN/root/chunk-y6sv21ep.js:18:83284)\n at Uu (B:/~BUN/root/chunk-y6sv21ep.js:18:83113)\n at ym (B:/~BUN/root/chunk-y6sv21ep.js:18:79637)\n at ct (B:/~BUN/root/chunk-y6sv21ep.js:18:6261)\n at Jn (B:/~BUN/root/chunk-y6sv21ep.js:18:4792)","timestamp":"2026-09-17T14:33:37.867Z"}]
```

The report names no source files, tests, or entry points; start by clarifying which local-model providers and workflows should replace the Anthropic API. The attached VirtualMessageList error is from bundled runtime chunks rather than a project location, so reproduce it separately and define support and regression criteria before implementation.

Written by the indexing model from the issue text.