SubMiner/backlog/tasks/task-190 - Add-hover-popups-for-session-chart-events.md

id, title, status, assignee, created_date, updated_date, labels, milestone, dependencies, references, priority, ordinal

id	title	status	assignee	created_date	updated_date	labels	milestone	dependencies	references	priority	ordinal
TASK-190	Add hover popups for session chart events	Done	Codex	2026-03-17 22:20	2026-03-18 05:28	stats ui bug	m-1		stats/src/components/sessions/SessionDetail.tsx stats/src/lib/session-events.ts stats/src/hooks/useSessions.ts stats/src/lib/api-client.ts docs/plans/2026-03-17-session-event-hover-popups-design.md	medium	105500

Description

Add hover/focus popups to session chart event markers so pauses, seeks, lookups, and card-mine events explain themselves inline. Card-mine events should lazy-load available Anki note info and present it in a richer popup with browse affordances.

Acceptance Criteria

• #1 Hovering or focusing a session-chart marker opens an event-specific popup.
• #2 Pause, seek, and lookup popups show concise event copy derived from marker metadata.
• #3 Card-mine popups lazily fetch and cache Anki note info by note id.
• #4 Card-mine popups show a formatted fallback when note info is missing or still loading.
• #5 Regression tests cover event payload shaping and popup rendering behavior.

Implementation Plan

1. Add failing tests for event metadata shaping and popup content selection.
2. Extend session-event shaping to parse payload JSON into typed marker metadata.
3. Add lazy note-info fetch/cache state for card-mine markers.
4. Render interactive marker overlay + custom popup in the session detail chart.
5. Run targeted stats/core verification and update this task with the result.

Outcome

Completed. Session-chart event markers now open event-specific hover/focus popups, including lazy-loaded Anki note info for card-mine events with browse affordances. Verification passed via targeted stats tests, bun run typecheck, and the core verification lane in .tmp/skill-verification/subminer-verify-20260317-222545-CQzyqK.