Check off E2E test expansion in PROGRESS.md and all M1 overview items
in PLAN.md (persistent storage, error boundaries, unit tests, E2E
coverage, CI pipeline). Zero unchecked items remain across all files.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Update loop/plan.md with all tasks checked through M7.4. Update
PROGRESS.md with comprehensive session log covering 15 completed
tasks from plugin system through platform features.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>