- remove trailing whitespace in .env.example Z.AI block - align documented model defaults/options with current onboard/provider behavior - keep this PR docs-focused by reverting incidental workflow edits
- Add comprehensive documentation for Z.AI GLM models - Include curl examples for testing Z.AI API - Document available models and troubleshooting - Update .env.example with Z.AI configuration Z.AI provides GLM models (glm-4.5, glm-4.6, glm-4.7, glm-5) through the OpenAI-compatible endpoint at api.z.ai/api/coding/paas/v4. Existing tests verify: - zai_base_url() returns correct URLs for global/CN variants - create_provider('zai', key) successfully creates provider - Regional alias predicates cover all variants