fix: disable persistent file logging to stop UI stalls/ANRs

[dishit-wednesday]

What

Two fixes in this PR:

1. Disable persistent file logging (stops UI stalls/ANRs)

logger.* is now a no-op in release builds (dev still mirrors to the console) — effectively a revert to the pre-0.0.88 logger behavior.

2. Fix Ollama vision capability detection for newer models (Gemma 4, etc.)

Models pulled from Ollama v0.6.4+ (released April 2025) report vision support via a top-level capabilities array rather than model_info keys. The old detection only checked model_info, so models like gemma4 were never detected as vision-capable and the image attachment button would not appear.

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Why

Logger:
In 0.0.88+ the logger was changed so capture() ran on every logger.log/warn/error call without a __DEV__ guard. In production that meant each call did:

• a synchronous JSON.stringify / string build on the JS thread, then
• a react-native-fs append (plus a periodic full-file read + 2MB trim) on a serial write queue.

With ~480 call sites concentrated in hot paths (tool loop, LiteRT, downloads, whisper), this contended with the bridge and is a strong contributor to reported UI freezes / 20s+ button lag / ANRs. Nothing reads the log file — it was write-only.

Vision detection:
Ollama PR #10066 (v0.6.4, April 2025) added a top-level capabilities array to /api/show. Newer model formats like Gemma 4 only populate this array — they don't put clip/vision keys in model_info. Our code only knew about the old location, so these models were always detected as non-vision.

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Changes

src/utils/logger.ts — remove appendPersistentLog / formatArg / the write-queue / the 2MB-trim and the react-native-fs dependency. logger.* is a pure console wrapper, no-op in release.

src/stores/remoteModelCapabilities.ts — check capabilities array first, fall back to model_info key scan, then projector_info keys. Also wires supportsToolCalling from the capabilities array.

Both changes are deliberately minimal and safe for an immediate release.

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Testing

• eslint clean on changed files.
• All logger consumers mock the logger; full related test suite (127 suites) passes.
• remoteModelCapabilities unit tests: 25/25 pass.
• Vision detection verified end-to-end on device against a live Ollama server with huihui_ai/gemma-4-abliterated:12b.