chore(template): clean-slate template snapshot from bb4a0c7

Curated, product-agnostic snapshot of the post-story-04 tree: demo
content deleted, auth-only reference feature, web-next shell, all gates
green. Product-specific docs, ADRs 027-029, PRDs/epics/archive, editor
library traces, and product naming are curated out; generic template
repairs (coverage provider devDeps, root test:coverage script, live
lint fixes, root-only release-please) are kept. See TEMPLATE.md for
provenance, curation list, and usage.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

packages/core-dsr/src/in-memory-data-rectify.ts

@@ -0,0 +1,19 @@
+import type { IDataRectify } from "./data-rectify.interface";
+
+/**
+ * Volatile in-memory IDataRectify. Accepts calls but makes no changes.
+ *
+ * Used in dev-seed and storybook contexts where Payload is unavailable.
+ * Not a recording double — use RecordingDataRectify from @repo/core-testing for
+ * call-assertion in unit tests.
+ */
+export class InMemoryDataRectify implements IDataRectify {
+  async updateSubjectField(
+    _subjectId: string,
+    _collection: string,
+    _field: string,
+    _value: unknown,
+  ): Promise<void> {
+    // no-op in dev-seed
+  }
+}