Jarvis a6e59bf829 fix: syncDirectory — guard same-path copy and skip nested .git dirs ...

Two bugs causing 'EACCES: permission denied, copyfile' when source
and target are the same path (e.g. wizard with sourceDir == mosaicHome):

1. No same-path guard — syncDirectory tried to copy every file onto
   itself; git pack files are read-only (0444) so copyFileSync fails.
2. excludeGit only matched top-level .git — nested .git dirs like
   sources/agent-skills/.git were copied, hitting the same permission
   issue.

Fixes:
- Early return when resolve(source) === resolve(target)
- Match .git dirs at any depth via dirName and relPath checks
- Skip files inside .git/ paths

Added file-ops.test.ts with 4 tests covering all cases.

2026-04-02 20:41:11 -05:00

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