FRE-4517, FRE-4499: Complete SpamShield implementation and billing updates

- SpamFeedback table migration with timestamp index
- Real-time interception engine completion
- Billing service enhancements
- Classifier and rule engine updates

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/api/src/server.ts

@@ -2,6 +2,7 @@ import Fastify from "fastify";
 import cors from "@fastify/cors";
 import helmet from "@fastify/helmet";
 import sensible from "@fastify/sensible";
+import { extractOrGenerateRequestId } from "@shieldai/types";
 import { darkwatchRoutes, voiceprintRoutes } from "./routes";
 
 const app = Fastify({
@@ -15,6 +16,15 @@ async function bootstrap() {
   await app.register(helmet);
   await app.register(sensible);
 
+  app.addHook("onRequest", async (request, _reply) => {
+    const requestId = extractOrGenerateRequestId(request.headers);
+    request.id = requestId;
+    const pinoLog = request.log as typeof request.log & { bindings?: Record<string, string>; bindActive?: () => void };
+    pinoLog.bindings = { requestId };
+    pinoLog.bindActive?.();
+    request.headers["x-request-id"] = requestId;
+  });
+
   await app.register(darkwatchRoutes);
   await app.register(voiceprintRoutes);