remove hive-level infra-container restart from web ui and agents

hive-agent-mcp/src/mcp/mod.rs

@@ -564,11 +564,7 @@ impl AgentServer {
     #[tool(
         description = "Restart a direct child sub-agent container (stop + start). \
             Only succeeds if `name` is a direct child of this agent in the topology \
-            tree — the server enforces this. No approval required. \
-            Agents holding the `infra_admin` capability may also pass a hive \
-            infrastructure container name (`hive-ci`, `hive-forge`, `hive-matrix`) \
-            to restart it directly via the privileged helper. The gateway is \
-            not restartable by an agent — ask the operator."
+            tree — the server enforces this. No approval required."
     )]
     async fn restart(&self, Parameters(args): Parameters<RestartArgs>) -> String {
         let log = format!("{args:?}");