b12e4698a6
- Added a dedicated @oh-my-pi/hashline package with parser, patcher, filesystem, snapshots, and release metadata. - Migrated coding-agent hashline and stream entrypoints to @oh-my-pi/hashline and removed old hashline module exports. - Changed multi-section hashline execution to validate section hashes and flush diagnostics only at the final commit. - Added session fileSnapshotStore support and rewired edit/read/search/write tools to use it instead of fileReadCache.