## Why
Background marketplace and plugin refreshes can otherwise inherit repository-local or command-scoped Git configuration from the project that launched Codex. That configuration can redirect remotes or invoke Git helpers during an automatic operation.
## What changed
- Run automatic marketplace upgrades, plugin cache refreshes, and curated marketplace lookups with repository-scoped Git environment variables removed and a temporary trusted repository under the Codex home.
- Carry the automatic/manual trust mode through marketplace upgrades and plugin materialization.
- Preserve the caller's Git configuration for explicit marketplace upgrades, plugin installs, and refreshes.
## Testing
- Add regression coverage for repository URL rewrites, protocol helpers, command-scoped configuration, and manual Git filters.
GitOrigin-RevId: 957f45fa3bd7ce7e1b83355f276cf65dc5e99c8e
## Why
App-server clients need to advertise structured MCP extension settings, including supported MCP App UI MIME types, rather than only opting into OpenAI form elicitation with a boolean.
## What changed
- Add an `extensions` map to initialize capabilities and preserve `mcpServerOpenaiFormElicitation` as a legacy alias for `openai/form`.
- Capture the declared extension profile when a thread is started, resumed, or forked, propagate it to subagents, and advertise it to downstream MCP servers during initialization.
- Keep the profile stable for the lifetime of the loaded session instead of changing it on later turns or direct tool calls.
## Testing
- Cover extension conversion, downstream MCP initialization, session isolation, legacy form support, and subagent inheritance.
GitOrigin-RevId: fbcedbb74ce788e574b0f884a4c45c4cedb9de54
## What changed
Update the existing-thread curated MCP sync test to wait for each server's
`ready` startup notification before proceeding through refresh boundaries or
calling the synced server's tool.
GitOrigin-RevId: 56fd7ff72ff277a043c4a2d8168079da053b4829
## Why
Curated plugin capabilities need to follow the active authentication mode, including after an account switch and when the configured model provider differs from the authentication source.
## What changed
- Select the ChatGPT, remote, or API curated marketplace from the current authentication mode, with an API marketplace fallback for ambient Amazon Bedrock credentials.
- Apply that selection consistently to plugin loading, hooks, skills, installed-plugin conflict filtering, marketplace listing, and `codex mcp` discovery.
- Start the local curated repository sync when an account change makes the remote catalog unavailable, and refresh existing thread MCP runtimes when the effective plugin cache changes.
## Testing
Added coverage for account switches, ChatGPT-authenticated Bedrock sessions, API-key MCP discovery, curated marketplace filtering, hook and skill routing, and existing-thread MCP refreshes.
GitOrigin-RevId: dbefdba3a3ea7281e7b6013e057a418770ccfc95
Charlie Marsh