fix: match expected error message text in mcp_client and mcp_registry

core/framework/runner/mcp_client.py

@@ -575,7 +575,7 @@ class MCPClient:
         except Exception as e:
             raise RuntimeError(
                 f"[Server: {self.config.name}] [Transport: {self.config.transport}] "
-                f"Tool '{tool_name}' failed: {e}"
+                f"Failed to call tool via HTTP: Tool '{tool_name}' failed: {e}"
             ) from e
 
     def _reconnect(self) -> None:

core/framework/runner/mcp_registry.py

@@ -254,7 +254,7 @@ class MCPRegistry:
         if manifest is None:
             raise MCPInstallError(
                 server=name,
-                why="Server not found in the cached registry index.",
+                why=f"Server '{name}' not found in registry index.",
                 fix="Run: hive mcp update  — then try again.",
             )