feat: Auto-indexing in cache folder.

[stephantul]

Hmmm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
src/semble/cache.py	100.00% <100.00%> (ø)
src/semble/cli.py	100.00% <100.00%> (ø)
src/semble/index/create.py	100.00% <100.00%> (ø)
src/semble/index/dense.py	100.00% <100.00%> (ø)
src/semble/index/files.py	100.00% <100.00%> (ø)
src/semble/index/index.py	100.00% <100.00%> (ø)
src/semble/mcp.py	100.00% <100.00%> (ø)
src/semble/search.py	100.00% <ø> (ø)
src/semble/stats.py	100.00% <100.00%> (ø)
src/semble/utils.py	100.00% <100.00%> (ø)
... and 1 more

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[greptile-apps]

Confidence Score: 3/5

The auto-caching path has a file-walk race that causes a misleading exit-1 instead of a transparent cache miss on active repos, and git-URL indexes are saved with a root path that already points to a deleted temp directory.

The get_validated_cache loop calls get_file_status without any OSError suppression; when a file disappears between the directory walk and the stat call, the exception propagates to _load_index's FileNotFoundError handler, which prints a confusing 'No such file or directory: /path/to/source.py' and calls sys.exit(1) rather than simply rebuilding the index. Additionally, from_git returns after the with tempfile.TemporaryDirectory() block's __exit__ has already deleted the clone, so every git-URL cache entry is stored with a root_path pointing to a non-existent directory; when that cache is loaded the _compute_file_sizes call silently yields an empty dict, breaking token-savings accounting for all subsequent cache hits on git URLs.

src/semble/cache.py (file-walk OSError handling) and src/semble/index/index.py (from_git root path lifetime)

_{Reviews (5): Last reviewed commit: "Add safe file read function" | Re-trigger Greptile}