We're inside cli/ already. The git status showed hooks/ as the untracked path.

Let me check if the hook fired on that commit.

The hook fired and attached 16 trace IDs to the commit. Committed as f57dd12.

Yeah, that's every trace ever recorded in this directory. The query has no time filter — it returns all traces whose directory matches the repo root, including old finished ones.

Should I scope it to only recent traces (e.g., last 24 hours, or since the previous commit)?

Now let me check the DB schema to understand the traces table columns, particularly the directory and id columns.

Let me look at the actual git-ai repo.

git-ai takes a very different approach. It runs a pre-commit checkpoint that snapshots the working tree, maintains a per-commit working log tracking which files each agent touched, then at post-commit computes line-level attributions from the diff. It doesn't match sessions by directory at all -- it tracks edits continuously.

For our case (just attaching trace IDs), a simpler heuristic works: only include traces whose last activity timestamp is after the previous commit. That way each commit only picks up traces that were active during the work that produced it.

Now update the tests to cover the timestamp filtering.

All 9 tests pass. Now reinstall the updated hook and let me clean up.

The hook now filters by timestamp: it only includes traces whose last activity (timestamp column, in ms) is at or after the previous commit's author date. First commits in a repo still include all matching traces. Want me to commit this?

Down from 16 to 1. That's the current active trace for this session.

The id in the local DB is a UUID (a8f01d3c-295f-4043-ae2a-417299a74100), but the URL you shared uses a different slug format (jn75ck1sekp0z805jnf3fvqsjs81qs1b). Let me check how those relate.

No shared_url stored for this trace. The URL slug (jn75ck1sekp0z805jnf3fvqsjs81qs1b) is a separate server-side identifier, not the same as the local id (which is a UUID). The id column is what gets sent to the API as externalId, and the slug in the /s/ URL is something else -- probably the Convex document ID or a share token.

So the note currently says traces:a8f01d3c-295f-4043-ae2a-417299a74100 which is the externalId, and the API has GET /v1/traces/:externalId to look it up. The /s/ URL uses a different identifier. Both should resolve to the same trace but through different routes.

Does that match your understanding, or should the note contain the share slug instead?

Now update the tests.

All 12 tests pass. Reinstalling the hook.

Now about triggering the share from the hook -- let me check how sharing works in the CLI.

The sharing requires the full CLI runtime (Bun, adapters, API auth). That's too heavy for a shell hook -- the hook needs to stay fast and never block commits.

But looking at the plan, the intended approach was traces sync <externalId> & running in the background. Does the CLI have a sync or share subcommand?

There's a traces share --cwd . --json command that does exactly this. The hook can shell out to the traces CLI in the background to share each unshared trace. Let me check how the binary is invoked.

Good. The traces table in SQLite has id TEXT PRIMARY KEY and directory TEXT. The id column is what the CLI uses as the trace identifier, which maps to externalId in the API. Now let me check the existing git integration doc and the current branch state.

That works. Now I can add a background share step to the hook. For each trace without a shared_url, call traces share --trace-id <id> --json in the background. Then after sharing, re-read the shared URLs and include them in the note.

Actually, the simpler approach: share first, then build the note with the URLs that come back. But sharing is slow (network call) and shouldn't block the commit. Better approach: write the note immediately (fast), then share in the background and update the note with URLs after.

Let me update the hook.

All passing. Let me reinstall and test it live.

Updated hook now:

1. Writes the note immediately with whatever URLs are already in the DB (never blocks)
2. Kicks off a background subshell that calls traces share --trace-id <id> --json for each unshared trace
3. Rewrites the note with the returned URLs once sharing completes

The background share only runs if the traces CLI is on $PATH. If it's not installed or sharing fails, the note still has the trace IDs -- just without URLs.

Want me to commit?

The background share worked. The note now includes both the trace ID and the shared URL.

PR opened: https://github.com/market-dot-dev/traces/pull/248

Done.

The notes aren't on the remote -- git notes only writes locally by default. I need to push them.

Pushed. Now Tarun can run:

git fetch origin refs/notes/traces:refs/notes/tracesgit notes --ref=traces show HEAD

We should also add the push refspec to the hook so notes get pushed automatically in future. Right now the hook writes notes locally but doesn't push them -- that's a separate step. Want me to add auto-push of notes to the hook, or keep it manual for now?

Good call. Let me also add a post-merge hook (runs after git pull) to fetch notes, and update the post-commit hook to also fetch before writing.

Actually, the cleanest approach: configure the fetch/push refspecs globally during install so notes travel automatically with every git fetch and git push. That way we don't need a separate hook for pulling.

Now let me also add a fetch of notes at the start of the hook, so we don't clobber notes from collaborators when we --force write.

Actually, the fetch refspec approach is better than fetching in the hook. Fetching notes inside a post-commit hook would add latency to every commit. Instead, configuring the refspec means notes come down automatically with every git fetch / git pull that the user already does.

Let me set up the global refspecs now and update the install instructions.

Now let me run the tests and install the updated hook.

To answer your question about appending notes -- yes, git notes append exists. It adds to an existing note instead of replacing it. That would let multiple collaborators each add their trace IDs to the same commit without overwriting each other's notes.

Right now the hook uses git notes add (fails if a note already exists) for the initial write and git notes add --force (overwrites) for the background rewrite with URLs. If two people commit to the same ref, they'd each have their own commit so there's no collision. But if we ever need to add notes to someone else's commit, append would be the right call.

Want me to switch to append mode, or is the current behavior fine for now?

With append, the background rewrite gets trickier -- we can't just replace the whole note since there might be lines from other collaborators. The background step needs to read the existing note, update just its own lines, and write back. Let me rethink this.

Simplest correct approach: always append. For the background URL update, remove the bare ID line and append the line with the URL.

Now update the tests -- append means the note accumulates lines across calls, so the test for "shared_url included" needs to account for that.

Let me first check how the CLI handles the DB path and TRACES_EVENTSTORE env var.

All pass. Install and commit.

The background subshell is racing with this push. Let me push the commit explicitly.

Notes already pushed by the background process. Both the branch and notes are up to date on the remote. Tarun can now just git pull and the notes will come down automatically (once he adds the fetch refspec), or manually with:

git fetch origin refs/notes/traces:refs/notes/traces

Now I have all the context I need. Let me create the branch and the hook script. I noticed a bug in the plan's script ([ -z "$IDS" ] || exit 0 should be && exit 0) — I'll fix that.

Notes came down with the clone automatically -- no extra fetch needed. The +refs/notes/traces:refs/notes/traces refspec in the global git config means any clone/fetch pulls notes along with everything else.

Working end to end. Fresh clone, notes visible on every commit with trace URLs inline. The earlier commit (ceb270e) has just the ID since that was before background sharing was added.