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* fix: fetch OpenRouter model capabilities at runtime for unknown models When an OpenRouter model is not in the built-in static snapshot from pi-ai, the fallback hardcodes input: ["text"], silently dropping images. Query the OpenRouter API at runtime to detect actual capabilities (image support, reasoning, context window) for models not in the built-in list. Results are cached in memory for 1 hour. On API failure/timeout, falls back to text-only (no regression). * feat(openrouter): add disk cache for OpenRouter model capabilities Persist the OpenRouter model catalog to ~/.openclaw/cache/openrouter-models.json so it survives process restarts. Cache lookup order: 1. In-memory Map (instant) 2. On-disk JSON file (avoids network on restart) 3. OpenRouter API fetch (populates both layers) Also triggers a background refresh when a model is not found in the cache, in case it was newly added to OpenRouter. * refactor(openrouter): remove pre-warm, use pure lazy-load with disk cache - Remove eager ensureOpenRouterModelCache() from run.ts - Remove TTL — model capabilities are stable, no periodic re-fetching - Cache lookup: in-memory → disk → API fetch (only when needed) - API is only called when no cache exists or a model is not found - Disk cache persists across gateway restarts * fix(openrouter): address review feedback - Fix timer leak: move clearTimeout to finally block - Fix modality check: only check input side of "->" separator to avoid matching image-generation models (text->image) - Use resolveStateDir() instead of hardcoded homedir()/.openclaw - Separate cache dir and filename constants - Add utf-8 encoding to writeFileSync for consistency - Add data validation when reading disk cache * ci: retrigger checks * fix: preload unknown OpenRouter model capabilities before resolve * fix: accept top-level OpenRouter max token metadata * fix: update changelog for OpenRouter runtime capability lookup (#45824) (thanks @DJjjjhao) * fix: avoid redundant OpenRouter refetches and preserve suppression guards --------- Co-authored-by: Ayaan Zaidi <hi@obviy.us>