[heydryft]

Summary

• Adds Runcrate as a named OpenAI-compatible LLM provider, in the same shape as the Cheaper Inference and OrcaRouter routes (feat(llm): add Cheaper Inference as a named OpenAI-compatible gateway #223, feat(llm): add OrcaRouter as a named OpenAI-compatible gateway #205).
• funclip/llm/openai_api.py: a runcrate/ prefix that is stripped before the request (model ids keep their vendor, e.g. deepseek-ai/DeepSeek-V4.1-Flash), base URL https://api.runcrate.ai/v1 (overridable with RUNCRATE_API_BASE), key from the APIKEY box or RUNCRATE_API_KEY, never OPENAI_API_KEY.
• funclip/launch.py: runcrate in SUPPORT_LLM_PREFIX, the runcrate/ route to openai_call, and two dropdown entries: runcrate/deepseek-ai/DeepSeek-V4.1-Flash and runcrate/openai/gpt-oss-120b.
• README and README_zh: a short "Using Runcrate" section next to the other providers.
• tests/test_runcrate_api.py: base URL, prefix stripping, env key, RUNCRATE_API_BASE override, empty model, and no fallback to the OpenAI key.

User impact

Users can run LLM-assisted clipping on open models through Runcrate; open models are free with your GitHub account.

Validation

• I ran the relevant tests or commands: pytest tests/test_runcrate_api.py tests/test_cheaperinference_api.py tests/test_orcarouter_api.py tests/test_minimax_api.py tests/test_openai_api.py tests/test_*_launch_integration.py tests/test_model_selection.py: 39 passed.
• I checked the affected README/docs links, if changed.
• I verified the affected UI, API, ASR, LLM, or clipping path, if changed: live openai_call("", "runcrate/<model>", <prompt + SRT>, demo_prompt) with RUNCRATE_API_KEY set and no OpenAI variables. Both deepseek-ai/DeepSeek-V4.1-Flash and openai/gpt-oss-120b returned a segment in the 1. [start-end] text format that the AI Clip step parses.

Notes for reviewers

Disclosure: I work on Runcrate. This PR was prepared with AI assistance (an AI coding agent wrote the change and ran the tests and the live check above).