docs(openspec): archive phase 3d display input

openspec/changes/archive/2026-08-10-phase-3d-client-display-input/tasks.md

@@ -12,6 +12,6 @@
 
 ## 3. Freeze
 
-- [ ] 3.1 Commit the verified source and generated bindings as one unsigned capability-sized change.
-- [ ] 3.2 Verify the next Phase 3D Protocol RC name is unused locally and remotely, then create one local immutable candidate tag without publishing it.
-- [ ] 3.3 Reconcile and archive this OpenSpec change after the immutable candidate is frozen.
+- [x] 3.1 Commit the verified source and generated bindings as one unsigned capability-sized change.
+- [x] 3.2 Verify the next Phase 3D Protocol RC name is unused locally and remotely, then create one local immutable candidate tag without publishing it.
+- [x] 3.3 Reconcile and archive this OpenSpec change after the immutable candidate is frozen.