Implements bd-9: Allow users to view all paths through diamond dependencies without deduplication. Useful for debugging complex dependency structures. Changes: - Added --show-all-paths flag to bd dep tree command - Updated GetDependencyTree interface to accept showAllPaths parameter - Modified deduplication logic to be conditional on flag - Updated tests to pass new parameter Amp-Thread-ID: https://ampcode.com/threads/T-43807dd5-8732-49ad-a839-cdb5dae70c35 Co-authored-by: Amp <amp@ampcode.com>