## What changed
- Add the stable, default-enabled `features.view_image` flag.
- Omit the native `view_image` tool when the flag is disabled, including for fresh-context subagents and guardian reviewer turns.
- Keep unrelated execution and MCP tools available when the viewer is disabled.
## Testing
- Add app-server coverage for disabled viewer inheritance in fresh-context subagents and guardian reviewer turns.
GitOrigin-RevId: 42b1311010fbde9f064129b17b425820861c6d91