feat: add managed hooks lockdown

codex-rs/app-server/README.md

@@ -196,7 +196,7 @@ Example with notification opt-out:
 - `externalAgentConfig/import` — apply selected external-agent migration items by passing explicit `migrationItems` with `cwd` (`null` for home).
 - `config/value/write` — write a single config key/value to the user's config.toml on disk.
 - `config/batchWrite` — apply multiple config edits atomically to the user's config.toml on disk, with optional `reloadUserConfig: true` to hot-reload loaded threads.
-- `configRequirements/read` — fetch loaded requirements constraints from `requirements.toml` and/or MDM (or `null` if none are configured), including allow-lists (`allowedApprovalPolicies`, `allowedSandboxModes`, `allowedWebSearchModes`), pinned feature values (`featureRequirements`), `enforceResidency`, and `network` constraints such as canonical domain/socket permissions plus `managedAllowedDomainsOnly` and `dangerFullAccessDenylistOnly`.
+- `configRequirements/read` — fetch loaded requirements constraints from `requirements.toml` and/or MDM (or `null` if none are configured), including allow-lists (`allowedApprovalPolicies`, `allowedSandboxModes`, `allowedWebSearchModes`), `allowManagedHooksOnly`, pinned feature values (`featureRequirements`), `enforceResidency`, and `network` constraints such as canonical domain/socket permissions plus `managedAllowedDomainsOnly` and `dangerFullAccessDenylistOnly`.
 
 ### Example: Start or resume a thread
 

codex-rs/app-server/src/config_api.rs

@@ -388,6 +388,7 @@ fn map_requirements_toml_to_api(requirements: ConfigRequirementsToml) -> ConfigR
             }
             normalized
         }),
+        allow_managed_hooks_only: requirements.allow_managed_hooks_only,
         feature_requirements: requirements
             .feature_requirements
             .map(|requirements| requirements.entries),
@@ -564,6 +565,7 @@ mod tests {
             allowed_web_search_modes: Some(vec![
                 codex_core::config_loader::WebSearchModeRequirement::Cached,
             ]),
+            allow_managed_hooks_only: Some(true),
             guardian_developer_instructions: None,
             feature_requirements: Some(codex_core::config_loader::FeatureRequirementsToml {
                 entries: std::collections::BTreeMap::from([
@@ -630,6 +632,7 @@ mod tests {
             mapped.allowed_web_search_modes,
             Some(vec![WebSearchMode::Cached, WebSearchMode::Disabled]),
         );
+        assert_eq!(mapped.allow_managed_hooks_only, Some(true));
         assert_eq!(
             mapped.feature_requirements,
             Some(std::collections::BTreeMap::from([
@@ -734,6 +737,7 @@ mod tests {
             allowed_approvals_reviewers: None,
             allowed_sandbox_modes: None,
             allowed_web_search_modes: Some(Vec::new()),
+            allow_managed_hooks_only: None,
             guardian_developer_instructions: None,
             feature_requirements: None,
             mcp_servers: None,