Walk back the earlier decision to skip /search/commits. The fork
inflation that worried me isn't misattribution — those commits
really were authored by the user; they just persist in forks after
the original repo went away. Skipping them dropped legitimate
historical work from the timeline.
The duplicate-SHA-across-forks issue is a pure dedup concern:
* keyed `github-commit:<sha>` (SHA only — globally unique by Git's
content addressing; same commit in two forks lands in one row);
* within a single page, dedup by id before INSERT (postgres ON
CONFLICT errors when the conflict target appears twice in one
statement);
* across pages and runs, last-write-wins via upsert. The repo
association may flip between forks but the commit content is
identical.
Visibility is read inline from `repository.private` on the search
item, no extra lookup needed. Also opportunistically populates the
shared visibility cache so the issue loop in the same poll skips
/repos/{full_name} GETs for any repo it already saw via commits.
Reshape: presentation/github.rs gains a Commit path — short SHA
linked, repo linked, first line of the commit message as subtitle.
GitCommit icon.
Tests: +3 in github_search (parse uses sha as id, marks private,
rejects non-github URL), +1 in presentation (commit reshape uses
short sha + first message line) — 18 total green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>