Extract two helper functions from checkSyncBranchHookQuick and
checkSyncBranchHookCompatibility to reduce code duplication:
1. getPrePushHookPath(path) - resolves pre-push hook path handling
both standard .git/hooks and shared hooks via core.hooksPath
2. extractBdHookVersion(content) - parses version from hook content
looking for bd-hooks-version: marker
Also documented the intentional behavior difference:
- Quick check: returns OK for custom hooks (silent)
- Full check: returns Warning for custom hooks (user awareness)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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