05f420d162
Visual regressions surfaced during browser smoke: 1. Page headers — `SectionHeader` renders as 12px uppercase gray (a section divider, not a page title). Replace with proper h2 title + inline subtitle (`N firing · N total` etc.) and right-aligned actions, styled from `alerts-page.module.css`. 2. Undefined `--space-*` tokens — the project (and `@cameleer/design-system`) has never shipped `--space-sm|md|lg|xl`, even though many modules (SensitiveKeysPage, alerts CSS, …) reference them. The fallback to `initial` silently collapsed gaps/paddings to 0. Define the scale in `ui/src/index.css` so every consumer picks it up. 3. List scrolling — DataTable was using default pagination, but with no flex sizing the whole page scrolled. Add `fillHeight` and raise `pageSize`/list `limit` to 200 so the table gets sticky header + internal scroll + pinned pagination footer (Gmail-style). True cursor-based infinite scroll needs a backend change (filed as follow-up — `/alerts` only accepts `limit` today). 4. Title column clipping — `.titlePreview` used `white-space: nowrap` + fixed `max-width`, truncating message mid-UUID. Switch to a 2-line `-webkit-line-clamp` so full context is visible. 5. Notification bell badge invisible — `NotificationBell.module.css` referenced undefined tokens (`--fg`, `--hover-bg`, `--bg`, `--muted`). Map to real DS tokens (`--text-primary`, `--bg-hover`, `#fff`, `--text-muted`). The admin user currently sees no badge because the backend `/alerts/unread-count` returns 0 (read receipts) — that's data, not UI. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>