cim_summary/.planning/milestones/v1.0-phases/04-frontend/04-01-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
04-frontend	01	ui	react typescript tailwind lucide-react axios	phase provides 03-api-layer GET /admin/health, GET /admin/analytics, GET /admin/alerts, POST /admin/alerts/:id/acknowledge endpoints	AdminService typed methods: getHealth(), getAnalytics(range), getAlerts(), acknowledgeAlert(id) AlertEvent, ServiceHealthEntry, AnalyticsSummary TypeScript interfaces AlertBanner component: critical active alert display with per-alert acknowledge button AdminMonitoringDashboard component: service health grid + analytics summary with range selector	04-02 (wires AlertBanner and AdminMonitoringDashboard into App.tsx Dashboard)	added patterns useCallback + useEffect for data fetching with re-fetch on state dependency changes Promise.all for concurrent independent API calls Optimistic UI: AlertBanner onAcknowledge pattern is defined at the parent level to filter local state immediately Status dot pattern: w-3 h-3 rounded-full with Tailwind bg-color for health indicators	created modified frontend/src/components/AlertBanner.tsx frontend/src/components/AdminMonitoringDashboard.tsx frontend/src/services/adminService.ts	AlertBanner filters to active service_down/service_degraded only — recovery type is informational, not critical (per RESEARCH Pitfall) AlertEvent uses snake_case fields (backend returns raw model data), ServiceHealthEntry/AnalyticsSummary use camelCase (backend admin.ts remaps) AdminMonitoringDashboard has no required props — self-contained component that fetches its own data	Monitoring dashboard pattern: health grid + analytics stat cards in same component Alert banner pattern: top-level conditional render, filters by status=active AND critical alert_type	ALRT-03 ANLY-02 HLTH-01	2min	2026-02-24

Phase 04 Plan 01: Monitoring Service Layer and Components Summary

AdminService extended with typed monitoring API methods plus AlertBanner and AdminMonitoringDashboard React components ready for mounting in App.tsx

Performance

• Duration: 2 min
• Started: 2026-02-24T21:33:40Z
• Completed: 2026-02-24T21:35:33Z
• Tasks: 2
• Files modified: 3

Accomplishments

• Extended adminService.ts with three new exported TypeScript interfaces (AlertEvent, ServiceHealthEntry, AnalyticsSummary) and four new typed API methods (getHealth, getAnalytics, getAlerts, acknowledgeAlert)
• Created AlertBanner component that filters alerts to active critical types only and renders a red banner with per-alert acknowledge buttons
• Created AdminMonitoringDashboard component with a 1x4 service health card grid (colored status dots) and a 1x5 analytics stat card panel with range selector and refresh button

Task Commits

Each task was committed atomically:

1. Task 1: Extend adminService with monitoring API methods and types - f84a822 (feat)
2. Task 2: Create AlertBanner and AdminMonitoringDashboard components - b457b9e (feat)

Files Created/Modified

• frontend/src/services/adminService.ts - Added AlertEvent, ServiceHealthEntry, AnalyticsSummary interfaces and getHealth(), getAnalytics(), getAlerts(), acknowledgeAlert() methods
• frontend/src/components/AlertBanner.tsx - New component rendering red banner for active service_down/service_degraded alerts with X Acknowledge buttons
• frontend/src/components/AdminMonitoringDashboard.tsx - New component with service health grid and processing analytics panel with range selector

Decisions Made

• AlertBanner renders only status === 'active' alerts of type service_down or service_degraded; recovery alerts are filtered out as informational
• Type casing follows backend API response shapes exactly: AlertEvent is snake_case (raw model), ServiceHealthEntry/AnalyticsSummary are camelCase (backend admin.ts remaps them)
• AdminMonitoringDashboard is self-contained with no required props, following existing Analytics.tsx pattern

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• All three files are ready to import in Plan 02 (App.tsx wiring)
• AlertBanner expects alerts: AlertEvent[] and onAcknowledge: (id: string) => Promise<void> — parent must manage alert state and provide optimistic acknowledge handler
• AdminMonitoringDashboard has no required props — drop-in for the monitoring tab

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Phase: 04-frontend Completed: 2026-02-24