* refactor(core): extract hasRecentCommits helper into @aoagents/ao-core
Deduplicate the byte-identical hasRecentCommits(workspacePath) helper
that was copy-pasted between agent-aider and agent-cursor. Exposes the
helper from core with a parameterized window so future agent plugins
using git-commit-based activity detection can share it.
Closes#1423
* test(core): make hasRecentCommits custom-window test discriminate on the parameter
The previous assertion passed the default (60) to hasRecentCommits, so a
bug where windowSeconds was silently ignored would still have passed.
Use a commit backdated ~2 minutes and assert both a 30s window excludes
it and a 600s window includes it — proving the parameter is forwarded
to `git log --since=...`.
Addresses Greptile review on #1437.
---------
Co-authored-by: Prateek <karnalprateek@gmail.com>
ea320312db