Replaces 4 separate frustration API calls with single useBehavior hook.
Removes manual fetchData, loading/error state, and refresh interval—SWR
handles caching, revalidation, and error state automatically.
Frustration APIs and dashboard API are separate — when frustration
calls fail, Scroll Depth still rendered from cached SWR data,
creating a broken mixed state. Now tracks error state and hides
the bottom section entirely on failure.
- Remove column headers for cleaner look
- Show secondary info (avg, sessions, last seen) on hover
- Add orange percentage badge that slides in on hover
- Add empty row padding for consistent card height
- Add column headers to rage/dead click tables
- Rich empty states with icons matching dashboard pattern
- Add frustration trend comparison chart (current vs previous period)
- Show "New" badge instead of misleading "+100%" when previous period is 0
- Click-to-copy on CSS selectors with toast feedback
- Normalize min-height to 270px for consistent card sizing
- Fix page title to include site domain (Behavior · domain | Pulse)
- Add "last seen" column with relative timestamps
