Building Chronicle MVP
Codex implementation conversation that turned the Chronicle visual-timeline idea into a working local viewer, corrected the public scaffold into an app-first shape, documented privacy and raw-screenshot boundaries, and added emergency archive scripts plus a durable-private-storage plan for both screen frames and written context.
Outcome metrics
Highlights
- Built a private local Chronicle viewer that indexes the rolling screen frame buffer and persisted Chronicle summaries, serving a dense white visual timeline at localhost.
- Verified the first real viewer through browser checks: indexed more than 1,500 frames, rendered a dense thumbnail grid, opened a detail overlay, showed nearby frames, and supported project filters/search.
- Corrected the public-facing `chronicle-visualizer` scaffold from a landing/docs shell into an app-first visual timeline surface with docs and project tracking as secondary routes.
- Created emergency archive scripts and a LaunchAgent so rolling Chronicle frames and the full written context tree are copied out of temp storage every 10 minutes.
- Produced a concrete durable private storage plan using encrypted S3-backed archives, manifests, and short local retention.
Source conversation
Source conversation
Public archiveThe source transcript archive is marked public for this intake and can be opened as a reviewed first-party chat mockup.
Created artifacts
Local-only Node viewer under codex-skills `local-tools/chronicle-visualizer`, serving the real frame-backed visual timeline at `127.0.0.1:4177` during the chat.
New app-first public-project scaffold under `/Users/maggielerman/Documents/chronicle-visualizer`, with `/` as a visual timeline surface and `/docs` plus `/projects` as secondary routes.
Recurring local preservation job that copies rolling screen files and the written Codex memory context out of temp storage every 10 minutes.
Actions and follow-ups
Actions Taken
- Used the Chronicle skill to verify the recorder was running and the latest frame was fresh before indexing live captures.
- Implemented a local private viewer with grouped thumbnails, inferred project chips, search, right-side date rail, detail overlay, nearby frames, source path display, and related-summary matching.
- Browser-checked the real local viewer at
127.0.0.1:4177, including indexed frame count, loaded thumbnail count, filters, detail overlay behavior, and search/filter state. - Created a separate
chronicle-visualizerapp scaffold and corrected it into an app-first visual timeline interface. - Added emergency snapshot and incremental archive scripts plus a 10-minute LaunchAgent after the rolling buffer had already dropped earlier frames.
- Updated archive behavior so it preserves both screen recordings and written Codex memory context.
- Drafted the durable private storage plan for encrypted remote retention.
Actions Outstanding
- Implement durable private storage so the current emergency archive can move from local preservation to verified encrypted remote retention.
- Define privacy/redaction policy before publishing any real Chronicle screenshots or raw visual timelines publicly.
- Decide how the public Chronicle Visualizer should ingest archived data without exposing local paths or unredacted captures.
- Replace synthetic public-app frames with vetted archived data only after storage and redaction policy are in place.
Source extracts
The “perfect local version” is at:
Raw screenshots belong in private archive/object storage, not git, unless you intentionally create a separate private capture repo with LFS and no public-release path.
Storage needs to be the first real system, and it should preserve both sides: visual captures and written Chronicle/Codex context.
Decisions
- Keep the live local viewer private because it reads local machine paths directly.
- Treat the public/non-local app as a data-source problem: it needs archived frames and written context before it can become real.
- Do not commit raw screenshots to a repo that is intended to become public, even if the repo is private today, because git history is sticky.
- Archive both visual captures and written context together, not just screenshots.
- Prefer file/object storage for screenshots and an index/manifest for metadata instead of storing screenshots directly in a database.