Add external extension acceptance path

workplans/GUIDE-BOARD-WP-0002-assessment-operations-baseline.md

@@ -4,7 +4,7 @@ type: workplan
 title: "Assessment Operations Baseline"
 repo: guide-board
 domain: markitect
-status: active
+status: completed
 owner: codex
 planning_priority: high
 planning_order: 2
@@ -174,7 +174,7 @@ Progress:
 
 ```task
 id: GUIDE-BOARD-WP-0002-T006
-status: todo
+status: done
 priority: high
 state_hub_task_id: "65fbf1df-caef-40f6-abee-8308daf27fbc"
 ```
@@ -187,6 +187,13 @@ Acceptance:
 - Cover extension validation, target/assessment profile validation, plan
   generation, run execution, and result review.
 
+Progress:
+
+- Added `docs/EXTERNAL-EXTENSION-ACCEPTANCE.md`.
+- Added `scripts/external_extension_acceptance.sh`.
+- Verified `open-cmis-tck` extension validation, profile validation, and plan
+  generation in scripted plan mode.
+
 ## Definition Of Done
 
 - The repo has a clear assessment operations guide.