feat(health): enhance HealthTimeline and HealthSourceTiles components

- Added optional props `emptyTitle` and `emptyDescription` to HealthTimeline for customizable empty state messages.
- Refactored HealthSourceTiles to export `HEALTH_PROVIDER_ITEMS` and introduced a new `HealthProviderStatusTiles` component for improved health monitoring.
- Updated UptimeChart to support period selection and filtering, enhancing data visualization capabilities.
- Improved ServiceDetailPage by integrating HealthProviderStatusTiles and ServiceHealthMonitor for better service health insights.

apps/web/src/lib/health-log.test.ts

@@ -0,0 +1,97 @@
+import { describe, expect, it } from 'vitest'
+
+import {
+  collapseStatusChanges,
+  enabledHealthProviders,
+  providerHealthStatuses,
+  worstHealthStatus,
+  type HealthLogProbe,
+} from '@/lib/health-log'
+
+function probe(
+  overrides: Partial<HealthLogProbe> & Pick<HealthLogProbe, 'id' | 'status' | 'checked_at'>,
+): HealthLogProbe {
+  return {
+    ip: '1.1.1.1',
+    provider: 'local',
+    ok: overrides.status === 'up',
+    latency_ms: 12,
+    colo: null,
+    error: null,
+    ...overrides,
+  }
+}
+
+describe('collapseStatusChanges', () => {
+  it('keeps only status transitions per ip+provider', () => {
+    const items = [
+      probe({ id: 1, status: 'up', checked_at: '2026-01-01T00:00:00Z' }),
+      probe({ id: 2, status: 'up', checked_at: '2026-01-01T00:01:00Z' }),
+      probe({ id: 3, status: 'down', checked_at: '2026-01-01T00:02:00Z' }),
+      probe({ id: 4, status: 'down', checked_at: '2026-01-01T00:03:00Z' }),
+      probe({ id: 5, status: 'up', checked_at: '2026-01-01T00:04:00Z' }),
+    ]
+    const changes = collapseStatusChanges(items)
+    expect(changes.map((item) => item.id)).toEqual([5, 3, 1])
+  })
+
+  it('tracks series independently by provider', () => {
+    const items = [
+      probe({ id: 1, provider: 'local', status: 'up', checked_at: '2026-01-01T00:00:00Z' }),
+      probe({
+        id: 2,
+        provider: 'cloudflare',
+        status: 'up',
+        checked_at: '2026-01-01T00:00:00Z',
+      }),
+      probe({ id: 3, provider: 'local', status: 'up', checked_at: '2026-01-01T00:01:00Z' }),
+      probe({
+        id: 4,
+        provider: 'cloudflare',
+        status: 'down',
+        checked_at: '2026-01-01T00:01:00Z',
+      }),
+    ]
+    const changes = collapseStatusChanges(items)
+    expect(changes.map((item) => item.id).sort()).toEqual([1, 2, 4])
+  })
+})
+
+describe('enabledHealthProviders', () => {
+  it('unions bindings in registry order', () => {
+    expect(
+      enabledHealthProviders([
+        { health_check_providers: ['globalping'] },
+        { health_check_providers: ['local', 'cloudflare'] },
+      ]),
+    ).toEqual(['local', 'cloudflare', 'globalping'])
+  })
+
+  it('falls back to local', () => {
+    expect(enabledHealthProviders([])).toEqual(['local'])
+  })
+})
+
+describe('providerHealthStatuses', () => {
+  it('uses worst latest-per-ip status', () => {
+    const items = [
+      probe({ id: 1, ip: '1.1.1.1', status: 'up', checked_at: '2026-01-01T00:02:00Z' }),
+      probe({ id: 2, ip: '2.2.2.2', status: 'down', checked_at: '2026-01-01T00:01:00Z' }),
+      probe({
+        id: 3,
+        ip: '2.2.2.2',
+        status: 'up',
+        checked_at: '2026-01-01T00:00:00Z',
+      }),
+    ]
+    expect(providerHealthStatuses(items, ['local']).local).toBe('down')
+  })
+})
+
+describe('worstHealthStatus', () => {
+  it('ranks down over degraded over up', () => {
+    expect(worstHealthStatus(['up', 'degraded'])).toBe('degraded')
+    expect(worstHealthStatus(['degraded', 'down'])).toBe('down')
+    expect(worstHealthStatus([])).toBe('unknown')
+  })
+})

apps/web/src/lib/health-log.ts

@@ -0,0 +1,127 @@
+import type { HealthCheckProvider } from '@cfdm/shared'
+import { HEALTH_CHECK_PROVIDERS, uniqueHealthProviders } from '@cfdm/shared'
+
+import { sqliteUtcToIso } from '@/lib/format'
+import type { IpHealthStatus } from '@/lib/schemas'
+
+export type HealthLogStatus = IpHealthStatus['status']
+
+export interface HealthLogProbe {
+  id: number
+  ip: string
+  provider: HealthCheckProvider
+  status: HealthLogStatus
+  ok: boolean
+  latency_ms: number | null
+  colo: string | null
+  error: string | null
+  checked_at: string
+}
+
+const STATUS_RANK: Record<HealthLogStatus, number> = {
+  unknown: 0,
+  up: 1,
+  degraded: 2,
+  down: 3,
+}
+
+export function probeTime(checkedAt: string): number {
+  const iso = sqliteUtcToIso(checkedAt) ?? checkedAt
+  const time = new Date(iso).getTime()
+  return Number.isNaN(time) ? 0 : time
+}
+
+export function filterByPeriod<T extends { checked_at: string }>(
+  items: T[],
+  days: number,
+): T[] {
+  const cutoff = Date.now() - days * 86_400_000
+  return items.filter((item) => probeTime(item.checked_at) >= cutoff)
+}
+
+export function filterByProviders<T extends { provider: string }>(
+  items: T[],
+  providers: readonly HealthCheckProvider[],
+): T[] {
+  if (providers.length === 0) return items
+  const allowed = new Set(providers)
+  return items.filter((item) => allowed.has(item.provider as HealthCheckProvider))
+}
+
+/**
+ * Keep the first probe of each ip+provider series and every later probe
+ * whose status differs from the previous one. Newest first.
+ */
+export function collapseStatusChanges<T extends HealthLogProbe>(items: T[]): T[] {
+  const byKey = new Map<string, T[]>()
+  for (const item of items) {
+    const key = `${item.ip}\0${item.provider}`
+    const list = byKey.get(key)
+    if (list) list.push(item)
+    else byKey.set(key, [item])
+  }
+
+  const changes: T[] = []
+  for (const list of byKey.values()) {
+    list.sort(
+      (a, b) => probeTime(a.checked_at) - probeTime(b.checked_at) || a.id - b.id,
+    )
+    let previous: HealthLogStatus | undefined
+    for (const item of list) {
+      if (item.status !== previous) {
+        changes.push(item)
+        previous = item.status
+      }
+    }
+  }
+
+  changes.sort(
+    (a, b) => probeTime(b.checked_at) - probeTime(a.checked_at) || b.id - a.id,
+  )
+  return changes
+}
+
+export function enabledHealthProviders(
+  domains: Array<{ health_check_providers?: readonly HealthCheckProvider[] | null }>,
+): HealthCheckProvider[] {
+  const collected = uniqueHealthProviders(
+    domains.flatMap((domain) => domain.health_check_providers ?? []),
+  )
+  if (collected.length === 0) return ['local']
+  return HEALTH_CHECK_PROVIDERS.filter((provider) => collected.includes(provider))
+}
+
+export function worstHealthStatus(statuses: readonly HealthLogStatus[]): HealthLogStatus {
+  if (statuses.length === 0) return 'unknown'
+  return statuses.reduce((worst, status) =>
+    STATUS_RANK[status] > STATUS_RANK[worst] ? status : worst,
+  )
+}
+
+/** Latest probe per IP for a provider, then worst among those IPs. */
+export function providerHealthStatuses(
+  items: readonly HealthLogProbe[],
+  providers: readonly HealthCheckProvider[],
+): Record<HealthCheckProvider, HealthLogStatus> {
+  const latestByIp = new Map<string, HealthLogProbe>()
+  const sorted = [...items].sort(
+    (a, b) => probeTime(b.checked_at) - probeTime(a.checked_at) || b.id - a.id,
+  )
+  for (const item of sorted) {
+    const key = `${item.provider}\0${item.ip}`
+    if (!latestByIp.has(key)) latestByIp.set(key, item)
+  }
+
+  const result = Object.fromEntries(
+    HEALTH_CHECK_PROVIDERS.map((provider) => [provider, 'unknown' as HealthLogStatus]),
+  ) as Record<HealthCheckProvider, HealthLogStatus>
+
+  for (const provider of providers) {
+    const statuses = [...latestByIp.values()]
+      .filter((item) => item.provider === provider)
+      .map((item) => item.status)
+    result[provider] = worstHealthStatus(statuses)
+  }
+
+  return result
+}