diff --git a/docs/work/conformance-system-v1/01-define-feature-helper/_story.md b/docs/work/conformance-system-v1/01-define-feature-helper/_story.md
index 5af374f..1316f77 100644
--- a/docs/work/conformance-system-v1/01-define-feature-helper/_story.md
+++ b/docs/work/conformance-system-v1/01-define-feature-helper/_story.md
@@ -3,7 +3,7 @@ id: 01-define-feature-helper
 epic: conformance-system-v1
 title: defineFeature helper + Instrumented/Captured/Audited brands
 type: technical-story
-status: in-progress
+status: done
 feature: core-shared
 depends-on: []
 blocks: [02-boot-assertions]
@@ -38,12 +38,12 @@ Compile-time TS2322 fires when an unwrapped factory is bound through
 - Generator emitting manifest stubs (story 05)
 
 ## Tasks
-- [ ] Brand types: `Instrumented<F>` and `Captured<F>`
-- [ ] `withSpan` attaches `Instrumented`
-- [ ] `withCapture` attaches `Captured`
-- [ ] `defineFeature` helper + manifest types
-- [ ] `ProductionUseCase<I, O, M>` slot type
-- [ ] `withAudit` wrapper + `Audited` brand
-- [ ] `authManifest` declaration
-- [ ] `auth.signIn` rebound through branded slot
-- [ ] Negative test: unwrapped factory rejected at type level
+- [x] Brand types: `Instrumented<F>` and `Captured<F>`
+- [x] `withSpan` attaches `Instrumented`
+- [x] `withCapture` attaches `Captured`
+- [x] `defineFeature` helper + manifest types
+- [x] `ProductionUseCase<I, O, M>` slot type
+- [x] `withAudit` wrapper + `Audited` brand
+- [x] `authManifest` declaration
+- [x] `auth.signIn` rebound through branded slot
+- [x] Negative test: unwrapped factory rejected at type level
diff --git a/docs/work/conformance-system-v1/_epic.md b/docs/work/conformance-system-v1/_epic.md
index a039deb..a5962fe 100644
--- a/docs/work/conformance-system-v1/_epic.md
+++ b/docs/work/conformance-system-v1/_epic.md
@@ -30,7 +30,7 @@ See `docs/architecture/feature-conformance-explainer.html` and
 - Sandcastle orchestration (Phase 2: work-system-v1 epic)
 
 ## Stories
-- [ ] [01 — defineFeature helper + Instrumented/Captured/Audited brands](01-define-feature-helper/_story.md)
+- [x] [01 — defineFeature helper + Instrumented/Captured/Audited brands](01-define-feature-helper/_story.md)
 - [ ] 02 — `assertConformance` + boot wiring (later plan)
 - [ ] 03 — AST-aware ESLint rules (later plan)
 - [ ] 04 — CI drift gate (later plan)