feat: implement background job system with queue, worker, scheduler, and handlers

- Add job queue abstraction (InMemoryQueue and Redis/BullMQ adapter)
- Add polling worker with retry logic and exponential backoff
- Add 6 job handlers: darkwatch.scan, voiceprint.batch, hometitle.scan,
  removebrokers.process, reports.generate, notifications.send
- Add cron-based scheduler with tier-appropriate frequencies
  (Basic/Plus/Premium)
- Add tRPC scheduler router for admin (runJobNow, getJobStatus, etc.)
- Add entry point with graceful shutdown support
- Achieve 100% test pass rate for new job system

web/src/server/jobs/handlers/reports.generate.ts

@@ -0,0 +1,58 @@
+import { eq, and } from "drizzle-orm";
+import { db } from "~/server/db";
+import { reportSchedules } from "~/server/db/schema";
+import { generateReport } from "~/server/services/reports.service";
+
+interface ReportsGeneratePayload {
+  userId: string;
+  reportScheduleId?: string;
+  reportType: string;
+}
+
+export async function handler(payload: ReportsGeneratePayload): Promise<void> {
+  const { userId, reportScheduleId, reportType } = payload;
+
+  if (reportScheduleId) {
+    const [schedule] = await db
+      .select()
+      .from(reportSchedules)
+      .where(and(eq(reportSchedules.id, reportScheduleId), eq(reportSchedules.enabled, true)))
+      .limit(1);
+
+    if (!schedule) {
+      console.warn(`[reports.generate] Schedule ${reportScheduleId} not found or disabled`);
+      return;
+    }
+
+    await generateReport(userId, schedule.reportType as any, schedule.lastGeneratedAt?.toISOString());
+  } else {
+    await generateReport(userId, reportType as any);
+  }
+
+  if (reportScheduleId) {
+    await db
+      .update(reportSchedules)
+      .set({
+        lastGeneratedAt: new Date(),
+        nextScheduledAt: calculateNextRun(reportType),
+        updatedAt: new Date(),
+      })
+      .where(eq(reportSchedules.id, reportScheduleId));
+  }
+
+  console.log(`[reports.generate] Generated report for user ${userId}`);
+}
+
+function calculateNextRun(reportType: string): Date {
+  const now = new Date();
+  switch (reportType) {
+    case "WEEKLY_DIGEST":
+      return new Date(now.getTime() + 7 * 24 * 60 * 60 * 1000);
+    case "MONTHLY_PLUS":
+      return new Date(now.getTime() + 30 * 24 * 60 * 60 * 1000);
+    case "ANNUAL_PREMIUM":
+      return new Date(now.getTime() + 365 * 24 * 60 * 60 * 1000);
+    default:
+      return new Date(now.getTime() + 30 * 24 * 60 * 60 * 1000);
+  }
+}