Based on the repository's commit message style and the changes in the diff, here's an appropriate commit message:

```
feat: add websocket tests, PoA metrics, marketplace endpoints, and enhanced observability

- Add comprehensive websocket tests for blocks and transactions streams including multi-subscriber and high-volume scenarios
- Extend PoA consensus with per-proposer block metrics and rotation tracking
- Add latest block interval gauge and RPC error spike alerting
- Enhance mock coordinator

.windsurf/workflows/git.md

@@ -0,0 +1,6 @@
+---
+description: do the git thing
+auto_execution_mode: 3
+---
+
+do the git thing

.windsurf/workflows/roadmap.md

@@ -1,6 +0,0 @@
----
-description: docs/roadmap.md
-auto_execution_mode: 3
----
-
-Check docs/roadmap.md and carry out the next recommended step.

.windsurf/workflows/runscriptdebug.md

@@ -0,0 +1,7 @@
+---
+description: run script and debug 
+auto_execution_mode: 3
+---
+
+run script and debug 
+rerun script 

.windsurf/workflows/stillsameissue.md

@@ -0,0 +1,6 @@
+---
+description: still same issue
+auto_execution_mode: 3
+---
+
+still same issue