fix(sweep): repo-detection fallback regex also accepts ssh:// github remotes

[carlos-alm]

Problem

/sweep's repo-slug-detection fallback (.claude/skills/sweep/SKILL.md) only matches git@github.com:owner/repo and https://github.com/owner/repo remote URL forms — it silently rejects ssh://git@github.com/owner/repo, a valid, real-world GitHub remote form. The OLD (buggy, .git-suffix-retaining) regex this replaced happened to accept it too, via a permissive .*github\.com[:/] prefix — so this is a genuine regression, not just a pre-existing gap.

Greptile caught this exact gap on PR #2362 (porting the same fallback pattern into /resolve) and it was fixed there before merge. /sweep — the original source of this pattern (PR #2185) — still has the unfixed version.

Fix

Add ssh://git@github\.com/ as a third alternative in the anchored prefix group, exactly matching /resolve's already-fixed copy:

-     | sed -nE 's#^(git@github\.com:|https://github\.com/)([^/]+/[^/]+)/?$#\2#p' \
+     | sed -nE 's#^(git@github\.com:|https://github\.com/|ssh://git@github\.com/)([^/]+/[^/]+)/?$#\2#p' \

Closes #2363

Test plan

• Verified all 6 remote URL forms (scp-style SSH, HTTPS, ssh://, each with/without .git suffix) resolve to the correct owner/repo slug via the fixed regex
• lint-skill.sh shows only pre-existing warnings/errors unrelated to this line (missing frontmatter fields, missing sections — out of scope, not introduced by this change)
• No source code or test infrastructure covers this markdown-embedded pattern (confirmed by checking PR fix(skills): resolve's repo-detection fallback regex retains .git suffix #2362, which fixed the identical gap in /resolve with no accompanying test) — matches existing precedent

[greptile-apps]

Greptile Summary

This PR extends /sweep repository detection to support GitHub remotes using the ssh://git@github.com/owner/repo form.

• Adds the ssh://git@github.com/ prefix to the fallback regex.
• Preserves existing handling for SCP-style SSH, HTTPS, optional trailing slashes, and .git suffix removal.

Confidence Score: 5/5

The PR appears safe to merge with no actionable defects identified.

The new anchored regex alternative captures the same owner/repository slug shape as the existing HTTPS form, while the following pipeline stage continues to remove an optional .git suffix.

Important Files Changed

Filename	Overview
.claude/skills/sweep/SKILL.md	The narrowly scoped regex change correctly accepts the additional GitHub SSH URL form without changing existing matches.

_{Reviews (1): Last reviewed commit: "fix(sweep): repo-detection fallback rege..." | Re-trigger Greptile}