SubMiner/changes/stats-dashboard-feedback-pass.md

type: changed area: stats

• Library groups now collapse multi-video series behind a per-group dropdown so the grid stays browsable.
• Sessions are rolled up per episode within each day, with a bulk delete that wipes every session in the group.
• Trends add a 365-day range next to the existing 7d/30d/90d/all options.
• Library detail view gets a delete-episode action that removes the video and all its sessions.
• Vocabulary Top 50 tightens the word/reading column so katakana entries no longer push the scores off screen.
• Episode detail hides card events whose Anki notes have been deleted, instead of showing phantom mining activity.
• Trend and watch-time charts share a unified theme with horizontal gridlines and larger ticks for legibility.