ticket: close plugin tool surface

.yoi/tickets/00001KV5W3PHA/thread.md

@@ -399,4 +399,38 @@ Cleanup planned:
 
 Reviewer approved after requested schema validation fix, implementation branch merged into the orchestration branch, and focused validation passed in the Orchestrator worktree. Marking Ticket done in the orchestration branch.
 
+---
+
+<!-- event: state_changed author: hare at: 2026-06-17T05:44:04Z from: done to: closed reason: closed field: state -->
+
+## State changed
+
+Ticket を closed にしました。
+
+
+---
+
+<!-- event: close author: hare at: 2026-06-17T05:44:04Z status: closed -->
+
+## 完了
+
+Merged orchestration implementation into develop and validated.
+
+Implementation delivered Plugin Tool surface registration from enabled Plugin packages:
+- feature-gated Plugin Tool registration through the existing ToolRegistry/model-visible schema path
+- Plugin origin metadata on Tool metadata
+- discovery-only packages remain inactive without explicit enablement
+- duplicate/colliding Tool names and invalid schemas fail closed
+- recursive schema validation rejects nested invalid schema nodes before registration
+- runtime execution remains an unavailable/runtime-missing stub; WASM runtime and grant enforcement remain follow-up Tickets
+
+Validation on develop after merge:
+- cargo test -p pod plugin::tests --no-default-features
+- cargo test -p manifest plugin --no-default-features
+- cargo check -p pod -p manifest -p llm-worker
+- cargo build -p yoi
+- target/debug/yoi ticket doctor
+- nix build .#yoi --no-link
+
+
 ---