docs(work): scaffold conformance-hardening-v1 epic + stories

docs/work/conformance-hardening-v1/02-dev-seed-assertion/_story.md

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+---
+id: 02-dev-seed-assertion
+epic: conformance-hardening-v1
+title: Extend assertFeatureConformance to all bind-dev-seed paths
+type: technical-story
+status: todo
+feature: <cross-feature>
+depends-on: [01-ast-manifest-source]
+blocks: []
+---
+
+## Goal
+Each feature's `bind-dev-seed.ts` calls `assertFeatureConformance(...)`
+at its tail, matching the bind-production pattern.
+
+## In scope
+- Update bind-dev-seed.ts in auth, blog, media, navigation, marketing-pages
+- Each gets the same import + tail call as its bind-production sibling
+
+## Out of scope
+- Behavioural changes to dev-seed binders
+
+## Tasks
+- [ ] Update auth bind-dev-seed
+- [ ] Update blog bind-dev-seed
+- [ ] Update media bind-dev-seed
+- [ ] Update navigation bind-dev-seed
+- [ ] Update marketing-pages bind-dev-seed
+- [ ] Verify pnpm test passes