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Adam Perry @ OpenAI
845345b1dd
## Why Subagents should retain the spawning turn's selected skills and plugin choices whether `fork_turns` is `none` or `all`. Capability selection should not depend on copied conversation metadata. ## What changed - Use a shared child startup path for fresh and history-forked agents, inheriting selected capability roots from the spawning environment snapshot. - Pass the spawning turn's `disabled_plugin_ids` through both spawn handlers. When omitted, inherit the parent's current choices; explicit lists, including an empty list, override them. - Resolve the parent before startup so inherited client MCP settings apply even when only the session source identifies the parent. - Carry plugin choices into delegates with inherited isolation and preserve saved capability roots when resuming a child. ## Testing Add regression coverage for executor skill listing and reading, plugin MCP registration with both history modes, plugin overrides, capability-root precedence and isolation, and restoring saved child settings after parent settings change. GitOrigin-RevId: 2a6891a9bc6372fd2d1f30add2b5611f96b60594