fix: correct endpoint path to /mcp for streamable-http transport

tools/caveman/templates/git_status.txt

@@ -0,0 +1,12 @@
+{{- if d.staged }}Staged:
+{{- for d.staged as file }}  + {{file}}
+{{- end }}{{- end }}
+{{- if d.modified }}Modified:
+{{- for d.modified as file }}  ~ {{file}}
+{{- end }}{{- end }}
+{{- if d.untracked }}Untracked:
+{{- for d.untracked as file }}  ? {{file}}
+{{- end }}{{- end }}
+{{- if d.deleted }}Deleted:
+{{- for d.deleted as file }}  - {{file}}
+{{- end }}{{- end }}