docs(work): close elicitation-prompts-v1 epic

docs/work/elicitation-prompts-v1/01-sandcastle-scaffold/_story.md

@@ -3,7 +3,7 @@ id: 01-sandcastle-scaffold
 epic: elicitation-prompts-v1
 title: .sandcastle/ directory + README + .env.example + .gitignore
 type: technical-story
-status: in-progress
+status: done
 feature: tooling
 depends-on: []
 blocks: [02-elicitation-prompts, 03-dispatch-prompts]
@@ -11,7 +11,7 @@ blocks: [02-elicitation-prompts, 03-dispatch-prompts]
 
 ## Tasks
 
-- [ ] Story scaffold
-- [ ] Create .sandcastle/README.md
-- [ ] Create .sandcastle/.env.example
-- [ ] Create .sandcastle/.gitignore
+- [x] Story scaffold
+- [x] Create .sandcastle/README.md
+- [x] Create .sandcastle/.env.example
+- [x] Create .sandcastle/.gitignore