Added os.MkdirAll(dbDir, 0755) to ensure the .beads directory exists
before attempting to glob for JSONL files. This fixes a bug where
findJSONLPath() would fail silently if the directory doesn't exist yet,
which can happen during new database initialization.
The fix:
- Creates the directory with 0755 permissions if it doesn't exist
- Handles errors gracefully by returning the default path
- Subsequent write operations will still fail with clear errors if
directory creation fails
Closes bd-36
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Co-Authored-By: Claude <noreply@anthropic.com>
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