* feat: add intelligence source ingestion baseline
* fix(review-feedback-1708): Reject DNS names that resolve privately and Validate redirect targets
* fix(review-feedback-1708): Pin DNS resolution before fetching and Stream feeds before enforcing
* fix(review-feedback-1708): Sanitize fetch errors before returning them and Normalize nullable
* fix(review-feedback-1708): Avoid rolling back prior item inserts on duplicate races and Reject
* fix(review-feedback-1708): 落地可配置 RSS/Atom 情报源、存储、查询、retention 和基础安全边界
* fix(review-feedback-1708): 落地 RSS/Atom 情报源的存储、拉取、查询、retention 和基础安全边界
Add the Chinese documentation center, refresh the English documentation index, and update README navigation links.
Polish the README contact sections across Chinese, Traditional Chinese, and English docs by splitting long email details, aligning contact rows, and adding the Xiaohongshu QR image.
Validation:
- git diff --check
- GitHub CI passed: ai-governance, backend-gate, docker-build
- PR Review passed: security check, static check, AI review, review report
