victor-openai b71af39fe6 Preserve MCP App UI metadata in tool-call events and history (#45805) ...

## Why

Clients need widget presentation details to render MCP Apps without waiting for the full MCP catalog, including when replaying saved history.

## What changed

- Add `mcpToolCall.mcpAppUi` with the invoked descriptor's `resourceUri` and `preferredModelDisplayMode`, and carry it through tool-call events and saved history.
- Support `fullscreen` and default to `inline` when the display preference is missing or unsupported.
- Keep existing resource URI fields for compatibility. Leave `mcpAppUi` null for older history and tools that declare widgets only in result metadata, where clients still use catalog discovery.
- Update protocol schemas, TypeScript and Python types, and app-server documentation.

## Testing

Add parameterized integration coverage for fullscreen, missing and unsupported preferences, legacy URI metadata, and result-only widgets, verifying consistent tool events and preservation across session resume.

GitOrigin-RevId: 2a9bed804dcea8c2b4903b8406fa6710681f7f5e

2026-09-15 22:52:56 +00:00

..

src

Preserve MCP App UI metadata in tool-call events and history (#45805)

2026-09-15 22:52:56 +00:00

tests

Preserve MCP App UI metadata in tool-call events and history (#45805)

2026-09-15 22:52:56 +00:00

BUILD.bazel

[codex] Shard exec Bazel integration test (#19862)

2026-04-27 21:22:53 +00:00

Cargo.toml

Add managed worktrees to codex exec (#42652)

2026-09-04 01:56:38 +00:00