Keep Codex permission hooks non-blocking

CLI/CMUXCLI+AgentHookDefinitions.swift

@@ -53,7 +53,7 @@ extension CMUXCLI {
 
         enum HookFormat {
             case flat       // Cursor: {"hooks": {"event": [{"command": "..."}]}, "version": 1}
-            case nested(timeoutMs: Int)  // Codex/Gemini: nested with type/command/timeout
+            case nested(timeoutMs: Int)  // Nested type/command/timeout hooks; timeout unit is agent-specific.
             case kiroAgentJSON(timeoutMs: Int) // ~/.kiro/agents/*.json flat command entries with timeout_ms
             case antigravityJSON(timeoutSeconds: Int) // ~/.gemini/config/hooks.json named hook groups
             case rovoDevYAML
@@ -158,7 +158,7 @@ extension CMUXCLI {
             name: "codex", displayName: "Codex", statusKey: "codex",
             configDir: ".codex", configFile: "hooks.json", configDirEnvOverride: "CODEX_HOME",
             sessionStoreSuffix: "codex", disableEnvVar: "CMUX_CODEX_HOOKS_DISABLED",
-            hookMarker: "cmux hooks codex", format: .nested(timeoutMs: 5000),
+            hookMarker: "cmux hooks codex", format: .nested(timeoutMs: 5),
             events: [
                 .init(agentEvent: "SessionStart", cmuxSubcommand: "session-start"),
                 .init(agentEvent: "UserPromptSubmit", cmuxSubcommand: "prompt-submit"),