[SaladDay]

Claude Code Subagents run as the native agent types instead of one adapter-defined type.

• The adapter no longer defines oac_worker, whose description and prompt reached the model, and no longer denies the native agent types (general-purpose, Explore, Plan and others). Observation keeps working from native task_started and persisted metadata.
• Native Agent inputs are accepted: a per-call model (reported on create_subagent_call), the deprecated mode, and isolation: "worktree", whose worktree lives under the workspace's .claude/worktrees/. isolation: "remote" stays denied because it needs an account Core does not hold.
• SendMessage may address a child by its spawn name as well as by ID.
• The dead run_in_background check is removed; native drops the parameter while background tasks are disabled.

Docs: subagents.md and the bridge README, with zh mirror.

Tests: bridge tests (182) and a gated live test against MiniMax-M3: the model spawned a native general-purpose Subagent with a per-call model; identity, Turns, Items and the model were observed.

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