Add safer TUI defaults for cyber models (#37055)

## What changed

- Propagate the optional `modelSpecialty` field through the model catalog and
  app-server `model/list` response.
- When a newly selected model has the `cyber` specialty, default an active TUI
  thread to workspace-write permissions with on-request approval. Use auto
  review when available, otherwise keep the user as reviewer, while respecting
  configured permission requirements.
- Show a notice when auto review is applied and strengthen the full-access
  warning for cyber models.
- Preserve explicitly selected permissions when only reasoning settings change.

## Testing

- Cover auto-review defaults, requirement-aware fallback behavior, permission
  preservation across reasoning changes, and the new warning notice.

GitOrigin-RevId: 8f25b0082d3051d9ff91f7355921236d0f82f758

codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json

@@ -13540,6 +13540,13 @@
           "model": {
             "type": "string"
           },
+          "modelSpecialty": {
+            "default": null,
+            "type": [
+              "string",
+              "null"
+            ]
+          },
           "serviceTiers": {
             "default": [],
             "items": {