feat: Sprint 5 — AI insights, webhooks/Slack, PWA, performance monitoring

AI-Powered Insights (G9):
- Rule-based anomaly detection: budget burn rate, staffing gaps, utilization,
  timeline overruns across all active projects
- AI narrative generation via existing Azure OpenAI integration
- Cached in project dynamicFields to avoid regeneration
- New /analytics/insights page with anomaly feed + project summaries
- Sidebar nav: "AI Insights" under Analytics

Webhook System + Slack (G10):
- Webhook model in Prisma (url, secret, events, isActive)
- HMAC-SHA256 signed payloads with 5s timeout fire-and-forget dispatch
- Slack-aware: routes hooks.slack.com URLs through Slack formatter
- 6 events integrated: allocation.created/updated/deleted, project.created/
  status_changed, vacation.approved
- Admin UI: /admin/webhooks with CRUD, test button, event checkboxes
- webhook router: list, getById, create, update, delete, test

PWA Support (G11):
- manifest.json with standalone display, brand-colored icons (192+512px)
- Service worker: cache-first for static, network-first for API, offline fallback
- ServiceWorkerRegistration component with 60-min update checks
- InstallPrompt banner with 30-day dismissal memory
- Apple Web App meta tags + viewport theme color

Performance Monitoring (A15):
- Pino structured logging (JSON prod, pretty dev) via LOG_LEVEL env
- tRPC logging middleware on all protectedProcedure calls
- Request ID (UUID) per call for log correlation
- Slow query warnings (>500ms) at warn level
- GET /api/perf endpoint: memory, uptime, SSE connections, node version

Fix: renamed scenario.apply to scenario.applyScenario (tRPC reserved word)

Co-Authored-By: claude-flow <ruv@ruv.net>

packages/api/src/router/project.ts

@@ -13,6 +13,7 @@ import { loadProjectPlanningReadModel } from "./project-planning-read-model.js";
 import { adminProcedure, controllerProcedure, createTRPCRouter, managerProcedure, protectedProcedure, requirePermission } from "../trpc.js";
 import { createDalleClient, isDalleConfigured, parseAiError } from "../ai-client.js";
 import { invalidateDashboardCache } from "../lib/cache.js";
+import { dispatchWebhooks } from "../lib/webhook-dispatcher.js";
 
 const MAX_COVER_SIZE = 4 * 1024 * 1024; // 4 MB base64 string length limit (client compresses before upload)
 
@@ -157,6 +158,12 @@ export const projectRouter = createTRPCRouter({
       });
 
       void invalidateDashboardCache();
+      void dispatchWebhooks(ctx.db, "project.created", {
+        id: project.id,
+        shortCode: project.shortCode,
+        name: project.name,
+        status: project.status,
+      });
       return project;
     }),
 
@@ -222,6 +229,12 @@ export const projectRouter = createTRPCRouter({
         data: { status: input.status },
       });
       void invalidateDashboardCache();
+      void dispatchWebhooks(ctx.db, "project.status_changed", {
+        id: result.id,
+        shortCode: result.shortCode,
+        name: result.name,
+        status: result.status,
+      });
       return result;
     }),