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* feat(litellm): add image generation provider Registers litellm as an image-generation provider so model refs like litellm/gpt-image-2 route through the LiteLLM proxy, and agents.defaults.imageGenerationModel.fallbacks entries of the form litellm/... resolve without "No image-generation provider registered for litellm" errors. Implementation uses the OpenAI-compatible /images/generations and /images/edits endpoints that LiteLLM proxies for. BaseUrl resolves from models.providers.litellm.baseUrl (default http://localhost:4000). Private network is auto-allowed when baseUrl is a loopback/RFC1918 address, which covers the common self-hosted LiteLLM proxy case without needing OPENCLAW_PROVIDER_ALLOW_PRIVATE_NETWORK. Public baseUrls keep normal SSRF defaults. Default model is gpt-image-2 (matching upstream 4.21+ OpenAI default). Advertises the same 2K/4K sizes OpenAI now exposes, plus legacy 256/512/1024 for dall-e-3. Supports both generate and edit. Local patch. LiteLLM has no upstream image-generation support yet; revisit if upstream adds one. * ci: rerun after upstream main hot-fix * fix(litellm): harden image generation provider --------- Co-authored-by: Chris Zhang <chris@ChrisdeMac-mini.local> Co-authored-by: Peter Steinberger <steipete@gmail.com>