Web UI: add token usage dashboard (#10072)
* feat(ui): Token Usage dashboard with session analytics
Adds a comprehensive Token Usage view to the dashboard:
Backend:
- Extended session-cost-usage.ts with per-session daily breakdown
- Added date range filtering (startMs/endMs) to API endpoints
- New sessions.usage, sessions.usage.timeseries, sessions.usage.logs endpoints
- Cost breakdown by token type (input/output/cache read/write)
Frontend:
- Two-column layout: Daily chart + breakdown | Sessions list
- Interactive daily bar chart with click-to-filter and shift-click range select
- Session detail panel with usage timeline, conversation logs, context weight
- Filter chips for active day/session selections
- Toggle between tokens/cost view modes (default: cost)
- Responsive design for smaller screens
UX improvements:
- 21-day default date range
- Debounced date input (400ms)
- Session list shows filtered totals when days selected
- Context weight breakdown shows skills, tools, files contribution
* fix(ui): restore gatewayUrl validation and syncUrlWithSessionKey signature
- Restore normalizeGatewayUrl() to validate ws:/wss: protocol
- Restore isTopLevelWindow() guard for iframe security
- Revert syncUrlWithSessionKey signature (host param was unused)
* feat(ui): Token Usage dashboard with session analytics
Adds a comprehensive Token Usage view to the dashboard:
Backend:
- Extended session-cost-usage.ts with per-session daily breakdown
- Added date range filtering (startMs/endMs) to API endpoints
- New sessions.usage, sessions.usage.timeseries, sessions.usage.logs endpoints
- Cost breakdown by token type (input/output/cache read/write)
Frontend:
- Two-column layout: Daily chart + breakdown | Sessions list
- Interactive daily bar chart with click-to-filter and shift-click range select
- Session detail panel with usage timeline, conversation logs, context weight
- Filter chips for active day/session selections
- Toggle between tokens/cost view modes (default: cost)
- Responsive design for smaller screens
UX improvements:
- 21-day default date range
- Debounced date input (400ms)
- Session list shows filtered totals when days selected
- Context weight breakdown shows skills, tools, files contribution
* fix: usage dashboard data + cost handling (#8462) (thanks @mcinteerj)
* Usage: enrich metrics dashboard
* Usage: add latency + model trends
* Gateway: improve usage log parsing
* UI: add usage query helpers
* UI: client-side usage filter + debounce
* Build: harden write-cli-compat timing
* UI: add conversation log filters
* UI: fix usage dashboard lint + state
* Web UI: default usage dates to local day
* Protocol: sync session usage params (#8462) (thanks @mcinteerj, @TakHoffman)
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Co-authored-by: Jake McInteer <mcinteerj@gmail.com>
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