Scope extension capabilities to invocation lifetimes (#41020)

## What changed

- Add callback lifetimes to extension `ToolCall`, `ToolEnvironment`, turn-input context, and skill-read request types.
- Require extension tool executors to handle calls for any invocation lifetime and tie their returned futures to that lifetime.
- Update built-in extensions, adapters, and tests to use the lifetime-scoped APIs without retaining host-owned environment capabilities.

GitOrigin-RevId: aca9ce3a1b6870df550bc84ec9308cc65533f161

codex-rs/ext/history-notes/src/extension.rs

@@ -135,7 +135,7 @@ impl ToolContributor for HistoryNotesExtension {
         &self,
         session_store: &ExtensionData,
         thread_store: &ExtensionData,
-    ) -> Vec<Arc<dyn ToolExecutor<ToolCall>>> {
+    ) -> Vec<Arc<dyn for<'call> ToolExecutor<ToolCall<'call>>>> {
         let Some(config) = thread_store.get::<HistoryNotesExtensionConfig>() else {
             return Vec::new();
         };
@@ -151,7 +151,7 @@ impl ToolContributor for HistoryNotesExtension {
                     config.backend.clone(),
                     session_store.level_id().to_string(),
                     identity.agent_name.clone(),
-                )) as Arc<dyn ToolExecutor<ToolCall>>
+                )) as Arc<dyn for<'call> ToolExecutor<ToolCall<'call>>>
             })
             .collect()
     }

codex-rs/ext/history-notes/src/tools.rs

@@ -260,7 +260,10 @@ impl HistoryNotesTool {
         }
     }
 
-    async fn handle_call(&self, call: ToolCall) -> Result<Box<dyn ToolOutput>, FunctionCallError> {
+    async fn handle_call(
+        &self,
+        call: ToolCall<'_>,
+    ) -> Result<Box<dyn ToolOutput>, FunctionCallError> {
         let arguments = call.function_arguments()?;
         let arguments = if arguments.trim().is_empty() {
             json!({})
@@ -286,7 +289,7 @@ impl HistoryNotesTool {
     }
 }
 
-impl ToolExecutor<ToolCall> for HistoryNotesTool {
+impl<'call> ToolExecutor<ToolCall<'call>> for HistoryNotesTool {
     fn tool_name(&self) -> ToolName {
         ToolName::namespaced(self.action.namespace(), self.action.name())
     }
@@ -316,7 +319,10 @@ impl ToolExecutor<ToolCall> for HistoryNotesTool {
         self.action.supports_parallel_tool_calls()
     }
 
-    fn handle(&self, call: ToolCall) -> ToolExecutorFuture<'_> {
+    fn handle<'a>(&'a self, call: ToolCall<'call>) -> ToolExecutorFuture<'a>
+    where
+        'call: 'a,
+    {
         Box::pin(self.handle_call(call))
     }
 }