197c60126c
Adds a header bell component linking to /alerts/inbox with an unread-count badge for the selected environment. Polling pauses when the tab is hidden via TanStack Query's refetchIntervalInBackground:false (already set on useUnreadCount); the new usePageVisible hook gives components a re-renders-on-visibility-change signal for future defense-in-depth. Plan-prose deviation: the plan assumed UnreadCountResponse carries a bySeverity map for per-severity badge coloring, but the backend DTO only exposes a scalar `count`. The bell reads `data?.count` and renders a single var(--error) tint; a TODO references spec §13 for future per-severity work that would require expanding the DTO. Tests: usePageVisible toggles on visibilitychange events; NotificationBell renders the bell with no badge at count=0 and shows "3" at count=3. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
28 lines
513 B
CSS
28 lines
513 B
CSS
.bell {
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position: relative;
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display: inline-flex;
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align-items: center;
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justify-content: center;
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width: 32px;
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height: 32px;
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border-radius: 8px;
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color: var(--fg);
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text-decoration: none;
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}
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.bell:hover { background: var(--hover-bg); }
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.badge {
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position: absolute;
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top: 2px;
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right: 2px;
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min-width: 16px;
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height: 16px;
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padding: 0 4px;
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border-radius: 8px;
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background: var(--error);
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color: var(--bg);
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font-size: 10px;
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font-weight: 600;
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line-height: 16px;
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text-align: center;
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}
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