fix: make Butler runtime probes reliable

README.md

@@ -4,7 +4,7 @@ Unified API proxy and infrastructure management for Homelab Pfannkuchen.
 
 - **Base URL:** `http://10.4.1.116:8888`
 - **Authentication:** `Authorization: Bearer <BUTLER_TOKEN>`
-- **Version:** 2.3.0
+- **Version:** 2.3.1
 - **Interactive API documentation:** `/docs`
 
 ## Service proxy
@@ -97,6 +97,11 @@ Integration Compose definition: `tests/compose.integration.yaml` (binds only to
 
 ## Changelog
 
+### 2.3.1 — 22.07.2026
+
+- Use a writable runtime `known_hosts` file for SSH probes with read-only SSH mounts.
+- Correct the Semaphore backend port from the repurposed MCP-Dockhand port to port 3010.
+
 ### 2.3.0 — 22.07.2026
 
 - Added `/overview`, a compact schema-versioned verdict for lightweight language models.