Use path URIs in shell approval keys (#34806)

## What changed

- Store the shell approval key's `cwd` as a `PathUri`, matching the URI representation used by approval actions.
- Extend the approval-key test to verify both the URI-based working directory and environment scoping.

## Testing

- Added `approval_key_uses_path_uri_and_includes_environment_id`.

GitOrigin-RevId: 4d7ba1a2e652f4ffe317242f52beb33513b01e6a

codex-rs/core/src/tools/runtimes/shell.rs

@@ -95,7 +95,7 @@ pub struct ShellRuntime {
 pub(crate) struct ApprovalKey {
     environment_id: String,
     command: Vec<String>,
-    cwd: AbsolutePathBuf,
+    cwd: PathUri,
     sandbox_permissions: SandboxPermissions,
     additional_permissions: Option<AdditionalPermissionProfile>,
 }
@@ -130,7 +130,7 @@ impl Approvable<ShellRequest> for ShellRuntime {
         vec![ApprovalKey {
             environment_id: req.turn_environment.environment_id.clone(),
             command: canonicalize_command_for_approval(&req.command),
-            cwd: req.cwd.clone(),
+            cwd: PathUri::from_abs_path(&req.cwd),
             sandbox_permissions: req.sandbox_permissions,
             additional_permissions: req.additional_permissions.clone(),
         }]

codex-rs/core/src/tools/runtimes/shell_tests.rs

@@ -1,10 +1,11 @@
 use super::*;
 use codex_exec_server::Environment;
 use codex_utils_path_uri::PathUri;
+use pretty_assertions::assert_eq;
 use std::sync::Arc;
 
 #[tokio::test]
-async fn approval_key_includes_environment_id() {
+async fn approval_key_uses_path_uri_and_includes_environment_id() {
     let cwd = AbsolutePathBuf::try_from(std::env::current_dir().expect("read current dir"))
         .expect("current dir is absolute");
     let mut request = ShellRequest {
@@ -36,6 +37,16 @@ async fn approval_key_includes_environment_id() {
     };
     let runtime = ShellRuntime::for_shell_command(ShellRuntimeBackend::ShellCommandClassic);
     let original_key = runtime.approval_keys(&request);
+    assert_eq!(
+        original_key,
+        vec![ApprovalKey {
+            environment_id: "remote".to_string(),
+            command: request.command.clone(),
+            cwd: PathUri::from_abs_path(&cwd),
+            sandbox_permissions: request.sandbox_permissions,
+            additional_permissions: request.additional_permissions.clone(),
+        }]
+    );
     request.turn_environment.environment_id = "other".to_string();
     let other_key = runtime.approval_keys(&request);