v0.181.0: Slash commands while the agent runs, MCP OAuth resource override, and subagent and Git fixes

New features

• Slash commands while the agent runs - Slash commands now work during an active agent turn, so you no longer have to wait for it to finish
• MCP OAuth resource override - MCP server configs accept a resource field to send a different OAuth resource indicator, or omit it entirely

Improvements

• Subagent delegation - The agent now delegates to subagents more selectively when using OpenAI models
• Subagent results - The agent reuses a subagent's report instead of re-reading the files it already covered, making follow-up work faster

Bug fixes

• Git index lock - Checkouts now retry when another process is holding the Git index lock instead of failing
• BYOK models - Bring-your-own-key models are now scoped to the selected computer (app)