feat(logging): add structured server diagnostics

apps/web/src/app/api/velocity/access/route.ts

@@ -14,6 +14,7 @@ import { NextResponse } from "next/server";
 import { db } from "@/lib/database";
 import { isUniqueConstraintViolation } from "@/lib/database-errors";
 import { getIpIntelligence, toAuditIpData } from "@/lib/ip-intelligence";
+import { logger } from "@/lib/logger";
 import { problemInstance, problemResponse } from "@/lib/problem-response";
 
 const MAX_CLOCK_SKEW_MS = 45_000;
@@ -284,7 +285,10 @@ export async function POST(request: Request) {
       ));
     }
 
-    console.error("Velocity access request failed");
+    logger.error(
+      { err: error, event: "velocity.access_failed", instance },
+      "Velocity access request failed",
+    );
     return problemResponse(problemDetails(
       "urn:error:service-unavailable",
       "Service unavailable",