Katia Bulatova 81274f4033 Queue metrics and health UI (#4289) ...

## Queue pages design overhaul (frontend for the queue-metrics feature)

Builds the dashboards on top of the queue-metrics pipeline (base
branch).

### Queues list

<img width="1440" height="788" alt="Screenshot 2026-07-20 at 01 02 55"
src="https://github.com/user-attachments/assets/0b97dd6c-d05b-4dba-99c9-04266ec22cb3"
/>

### Queue detail

<img width="1440" height="1272" alt="tab-overview"
src="https://github.com/user-attachments/assets/22b33f82-522d-4410-a477-fe5d2c2f7adf"
/>

<img width="1440" height="1532" alt="tab-keys"
src="https://github.com/user-attachments/assets/b05619fa-93a8-43ef-8838-a6d7fc5d789b"
/>


### Under the hood
- Percent-based concurrency overrides (schema + migration + recalc on
env limit change, capped at the env limit) — covered by unit tests
- All recurring refresh hits ClickHouse only (15s blocks / 60s charts,
paused in hidden tabs); Redis/PG serve first paint
- Added `MetricsLayout` that is currently used for `/queues + $id`,
`/agents + $id`, `/settings/usage`

<img width="500" height="auto" alt="Screenshot 2026-07-20 at 01 07 31"
src="https://github.com/user-attachments/assets/e8a798e7-deee-455d-be96-414f7d09a06c"
/>

2026-07-21 19:29:42 +02:00

..

AppLayout.tsx

chore: Tailwind CSS v4 migration (#4139)

2026-07-08 15:11:40 +02:00

MetricsLayout.tsx

Queue metrics and health UI (#4289)

2026-07-21 19:29:42 +02:00