bfba308f

By: Michael Lynch <git@mtlynch.io>

Expand tinybeans.Parse tests to cover cross-file parsing logic

Add tests for filesystem-level behaviors that cannot be exercised from
the parse subpackage: video .mp4 media path resolution, missing
optional files (journal.json, followers.json), multiple entry
directories, directories without metadata.json being skipped, and
error cases for missing media files and unsupported entry types.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>