Clarify view_image tool description (#23949)

codex-rs/core/src/tools/handlers/view_image_spec.rs

@@ -40,7 +40,7 @@ pub fn create_view_image_tool(options: ViewImageToolOptions) -> ToolSpec {
 
     ToolSpec::Function(ResponsesApiTool {
         name: VIEW_IMAGE_TOOL_NAME.to_string(),
-        description: "View a local image from the filesystem (only use if given a full filepath by the user, and the image isn't already attached to the thread context within <image ...> tags)."
+        description: "View a local image file from the filesystem when visual inspection is needed. Use this for images already available on disk."
             .to_string(),
         strict: false,
         defer_loading: None,

codex-rs/core/tests/suite/code_mode.rs

@@ -2861,7 +2861,7 @@ text(JSON.stringify(tool));
         parsed,
         serde_json::json!({
             "name": "view_image",
-            "description": "View a local image from the filesystem (only use if given a full filepath by the user, and the image isn't already attached to the thread context within <image ...> tags).\n\nexec tool declaration:\n```ts\ndeclare const tools: { view_image(args: {\n  // Local filesystem path to an image file\n  path: string;\n}): Promise<{\n  // Image detail hint returned by view_image. Returns `high` for default resized behavior or `original` when original resolution is preserved.\n  detail: \"high\" | \"original\";\n  // Data URL for the loaded image.\n  image_url: string;\n}>; };\n```",
+            "description": "View a local image file from the filesystem when visual inspection is needed. Use this for images already available on disk.\n\nexec tool declaration:\n```ts\ndeclare const tools: { view_image(args: {\n  // Local filesystem path to an image file\n  path: string;\n}): Promise<{\n  // Image detail hint returned by view_image. Returns `high` for default resized behavior or `original` when original resolution is preserved.\n  detail: \"high\" | \"original\";\n  // Data URL for the loaded image.\n  image_url: string;\n}>; };\n```",
         })
     );