From a101f0e3be905e2da362812b58cb195a1018d774 Mon Sep 17 00:00:00 2001
From: Nathan Hangen <nhangen@gmail.com>
Date: Sun, 10 May 2026 21:24:58 -0400
Subject: [PATCH] fix(mcp): call shutdownMetrics on serve graceful shutdown

The supported scrape target (gitnexus serve) was leaking the Prometheus
exporter HTTP server on SIGINT/SIGTERM, leading to EADDRINUSE on restart.
Mirror the existing pattern in mcp/server.ts.
---
 gitnexus/src/server/api.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gitnexus/src/server/api.ts b/gitnexus/src/server/api.ts
index 2d49fabc4..d5e735a97 100644
--- a/gitnexus/src/server/api.ts
+++ b/gitnexus/src/server/api.ts
@@ -1832,6 +1832,10 @@ export const createServer = async (port: number, host: string = '127.0.0.1') =>
       await cleanupMcp();
       await closeLbug();
       await backend.disconnect();
+      try {
+        const { shutdownMetrics } = await import('../mcp/metrics.js');
+        await shutdownMetrics();
+      } catch {}
       const { flushLoggerSync } = await import('../core/logger.js');
       flushLoggerSync();
       process.exit(0);