#16637: feat(feishu_doc): support optional public_access on create

## Summary - feat(feishu_doc): support optional public_access on create - Split from our `v2026.2.13` patch train as a single-purpose change for easier review. ## Why - Keep the diff focused and low-risk so it can be merged or reverted independently. ## Scope - Branch: `feat/feishu-create-public-access-option-en` - Files changed: 3 - Key files: - `extensions/feishu/src/doc-schema.ts` - `extensions/feishu/src/docx.test.ts` - `extensions/feishu/src/docx.ts` ## Test Plan - Suggested local command: - `./node_modules/.bin/vitest run extensions/feishu/src/docx.test.ts` - Validation status: - [ ] CI checks pass - [ ] Maintainer re-ran local tests ## Risk & Rollback - Risk: low to medium; impact limited to touched module(s). - Rollback: revert this PR commit(s) cleanly. ## Co-authorship - Co-authored by @ciberponk and Codex (GPT-5). <!-- greptile_comment --> <h3>Greptile Summary</h3> Added optional `public_access` parameter to the Feishu document creation API, allowing documents to be created with public read or edit permissions in a single operation. The implementation calls `setDocPublicPermission` after successful document creation when `public_access` is specified. <h3>Confidence Score: 4/5</h3> - Safe to merge with one known limitation documented in previous review thread - Clean implementation with proper test coverage and schema validation. The change is focused, follows existing patterns, and includes a comprehensive test. Score of 4 (not 5) due to the known partial-failure mode mentioned in the previous review thread where permission setting can fail after document creation. - No files require special attention beyond the documented limitation _{Last reviewed commit: 06ec2fb} <!-- greptile_other_comments_section --> <!-- /greptile_comment -->