fase(23): observability and health probes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dist/api/middleware/errorHandler.js

@@ -51,10 +51,12 @@ class RateLimitError extends AppError {
 }
 exports.RateLimitError = RateLimitError;
 function globalErrorHandler(err, req, res, _next) {
-    const logger = req.log;
+    const authReq = req;
+    const logger = authReq.log;
+    const userId = authReq.user?.id;
     if (err instanceof AppError && err.isOperational) {
         if (logger) {
-            logger.warn({ err, statusCode: err.statusCode }, err.message);
+            logger.warn({ err, statusCode: err.statusCode, userId }, err.message);
         }
         const body = { error: err.message, code: err.code };
         if (err instanceof ValidationError && err.details !== undefined) {
@@ -64,7 +66,7 @@ function globalErrorHandler(err, req, res, _next) {
         return;
     }
     if (logger) {
-        logger.error({ err }, 'Unhandled error');
+        logger.error({ err, userId }, 'Unhandled error');
     }
     else {
         console.error('Unhandled error', err);

dist/main.js

@@ -84,6 +84,8 @@ const ReportWorker_1 = require("./jobs/workers/ReportWorker");
 const server_1 = require("./api/server");
 const SocketGateway_1 = require("./realtime/SocketGateway");
 async function bootstrap() {
+    // Startup probe — measure total boot time
+    const startupAt = Date.now();
     // 1. Config
     const config = (0, Config_1.loadConfig)();
     // 2. Logger
@@ -208,7 +210,8 @@ async function bootstrap() {
     await new Promise((resolve) => {
         httpServer.listen(config.port, config.host, resolve);
     });
-    logger.info({ port: config.port, host: config.host }, 'ABE server ready');
+    const startupMs = Date.now() - startupAt;
+    logger.info({ port: config.port, host: config.host, startupMs }, 'ABE server ready');
     // 14. Graceful shutdown
     let shuttingDown = false;
     async function shutdown(signal) {