chore: enable namespace tools for Bedrock (#24713)

Client-side namespace tools are now supported by bedrock. Enable
`namespace_tools` for the Amazon Bedrock provider while continuing to
disable unsupported hosted tools such as image generation and web
search.

codex-rs/app-server/tests/suite/v2/model_provider_capabilities_read.rs

@@ -60,7 +60,7 @@ async fn read_amazon_bedrock_provider_capabilities() -> Result<()> {
     let received: ModelProviderCapabilitiesReadResponse = to_response(response)?;
 
     let expected = ModelProviderCapabilitiesReadResponse {
-        namespace_tools: false,
+        namespace_tools: true,
         image_generation: false,
         web_search: false,
     };

codex-rs/core/src/tools/spec_plan_tests.rs

@@ -526,7 +526,7 @@ async fn mcp_and_tool_search_follow_direct_and_deferred_tool_exposure() {
         "read_mcp_resource",
     ]);
 
-    let missing_namespace_capability = probe_with(
+    let bedrock_namespace_capability = probe_with(
         |turn| {
             turn.model_info.supports_search_tool = true;
             use_bedrock_provider(turn);
@@ -537,7 +537,7 @@ async fn mcp_and_tool_search_follow_direct_and_deferred_tool_exposure() {
         },
     )
     .await;
-    missing_namespace_capability.assert_visible_lacks(&["tool_search"]);
+    bedrock_namespace_capability.assert_visible_contains(&["tool_search"]);
 
     let enabled = probe_with(
         |turn| {
@@ -890,7 +890,7 @@ async fn multi_agent_v2_can_use_configured_tool_namespace() {
 }
 
 #[tokio::test]
-async fn multi_agent_v2_namespace_is_ignored_without_provider_namespace_support() {
+async fn multi_agent_v2_namespace_is_supported_by_bedrock_provider() {
     let plan = probe(|turn| {
         set_feature(turn, Feature::MultiAgentV2, /*enabled*/ true);
         update_config(turn, |config| {
@@ -900,15 +900,15 @@ async fn multi_agent_v2_namespace_is_ignored_without_provider_namespace_support(
     })
     .await;
 
-    plan.assert_visible_contains(&["spawn_agent", "send_message", "list_agents"]);
+    plan.assert_visible_contains(&["agents"]);
-    plan.assert_visible_lacks(&["agents"]);
+    plan.assert_visible_lacks(&["spawn_agent", "send_message", "list_agents"]);
-    assert!(
-        plan.registered_names
-            .contains(&ToolName::plain("spawn_agent").to_string())
-    );
     assert!(
         !plan
             .registered_names
+            .contains(&ToolName::plain("spawn_agent").to_string())
+    );
+    assert!(
+        plan.registered_names
             .contains(&ToolName::namespaced("agents", "spawn_agent").to_string())
     );
 }

codex-rs/model-provider/src/amazon_bedrock/mod.rs

@@ -57,7 +57,7 @@ impl ModelProvider for AmazonBedrockModelProvider {
 
     fn capabilities(&self) -> ProviderCapabilities {
         ProviderCapabilities {
-            namespace_tools: false,
+            namespace_tools: true,
             image_generation: false,
             web_search: false,
         }
@@ -131,7 +131,7 @@ mod tests {
     }
 
     #[test]
-    fn capabilities_disable_unsupported_launch_features() {
+    fn capabilities_disable_unsupported_hosted_tools() {
         let provider = AmazonBedrockModelProvider::new(
             ModelProviderInfo::create_amazon_bedrock_provider(/*aws*/ None),
         );
@@ -139,7 +139,7 @@ mod tests {
         assert_eq!(
             provider.capabilities(),
             ProviderCapabilities {
-                namespace_tools: false,
+                namespace_tools: true,
                 image_generation: false,
                 web_search: false,
             }