note: Ticket 自体は implementation_ready で blocking relation なし。現在 `00001KTFY8V80` と `00001KV09WYC6` の Coder Pod が running で、review/integration follow-up capacity も必要なため、追加 spawn は一時待機する。

author: yoi-orchestrator


summary: Accept queued Plugin package/discovery design Ticket now that one active Coder has moved to review stage. Implement as design proposal and minimal safe references, preserving Plugin/MCP/feature authority boundaries.

role_plan: Orchestrator creates a dedicated implementation worktree and spawns a Coder with write scope limited to that worktree. Reviewer will run read-only after implementation report. This work is documentation/design-focused and source-disjoint from active Panel/TUI implementation.