docs(work): close fallow-integration-v1 epic

docs/work/fallow-integration-v1/04-docs-and-prompts/_story.md

@@ -3,7 +3,7 @@ id: 04-docs-and-prompts
 epic: fallow-integration-v1
 title: Docs + agent prompt updates
 type: technical-story
-status: todo
+status: done
 feature: agent-prompts
 depends-on: [03-ci-integration]
 blocks: []
@@ -11,8 +11,8 @@ blocks: []
 
 ## Tasks
 
-- [ ] Update CLAUDE.md conformance-system section to list Fallow as 5th gate
-- [ ] Update docs/guides/conformance-quickref.md with Fallow row
-- [ ] Update .sandcastle/implementer.prompt.md: run `fallow audit` before commit
-- [ ] Update .sandcastle/reviewer.prompt.md: verify implementer ran fallow audit
-- [ ] Final verification + closeout
+- [x] Update CLAUDE.md conformance-system section to list Fallow as 5th gate
+- [x] Update docs/guides/conformance-quickref.md with Fallow row
+- [x] Update .sandcastle/implementer.prompt.md: run `fallow audit` before commit
+- [x] Update .sandcastle/reviewer.prompt.md: verify implementer ran fallow audit
+- [x] Final verification + closeout