[freanocank]

Reading and exporting history can misidentify senders, select ambiguous contacts, truncate text and overwrite same-named attachments. Windows snapshots can omit committed WAL updates and accept corrupted encrypted pages. This integrates the contributor fixes into one tested branch, preserving all original commits and author attribution.

• Adopts fix(query): resolve sender identity within each message shard #3, fix(contacts): require a unique match before read or export #4, fix(media): preserve attachment paths to avoid filename collisions #5, fix(query): preserve complete text and line breaks #7, fix(query): reject invalid day windows and result limits #8, fix(windows): honor relocated WeChat data roots #9, fix(media): locate attachments in the original Windows account #10, fix(windows): authenticate every SQLCipher page before decryption #11, fix(query): stream SQLite fallback rows without repeated OFFSET scans #12, fix(windows): include committed WAL pages in decrypted snapshots #13 and fix(mcp): paginate chat listings with continuation offsets #14. Resolves the overlap between query-window validation and chat pagination.
• Adds an integration regression proving that a valid WAL checksum does not bypass SQLCipher page authentication, and that rejection preserves the previous snapshot.
• Documents query limits, pagination, relocated Windows storage, original attachment roots and snapshot behavior in the English/Chinese readmes and Windows guide.
• Records the proposed media-manifest contract for Feature proposal: local per-message media manifest and transcript links #6, including conversation/shard-scoped identity and explicit unresolved states. That feature remains open pending verified resource-index fixtures; this PR does not implement image association or encrypted-image decoding.

Validation on macOS / Python 3.14: full suite 208 passed, 1 skipped (Windows-only native Frida test); compilation, shell syntax, documentation links and six-tool MCP registration passed. No tests were excluded. Every original PR head is an ancestor of this branch.

The GitHub Actions matrix passed all four macOS/Windows × Python 3.10/3.13 jobs: PR run 38470902462 and push run 38470854378. GitGuardian passed as well. Live account-wide WeChat extraction/decryption remains outside the synthetic regression coverage.

Merged as 0535971c60f6c624419d8b1ff56df260d3262300. All 11 original contributor PRs are now marked merged, their head commits are ancestors of main, and main matches the tested integration tree. The post-merge main CI also passed. The contributor PRs received acknowledgements and validation details; issue #6 received the scoped follow-up and remains open.