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-eslint/rules/_usecase-name.test.js

@@ -0,0 +1,37 @@
+import { describe, it, expect } from "vitest";
+import { useCaseNameFromFile } from "./_usecase-name.js";
+
+describe("useCaseNameFromFile", () => {
+  it("converts kebab-case slug to camelCase", () => {
+    expect(
+      useCaseNameFromFile(
+        "/repo/packages/auth/src/application/use-cases/sign-in.use-case.ts",
+      ),
+    ).toBe("signIn");
+    expect(
+      useCaseNameFromFile(
+        "/repo/packages/auth/src/application/use-cases/sign-up.use-case.ts",
+      ),
+    ).toBe("signUp");
+    expect(
+      useCaseNameFromFile(
+        "/repo/packages/blog/src/application/use-cases/get-article-by-slug.use-case.ts",
+      ),
+    ).toBe("getArticleBySlug");
+  });
+
+  it("handles single-word slugs", () => {
+    expect(
+      useCaseNameFromFile(
+        "/repo/packages/x/src/application/use-cases/login.use-case.ts",
+      ),
+    ).toBe("login");
+  });
+
+  it("returns null for non-use-case files", () => {
+    expect(useCaseNameFromFile("/repo/packages/auth/src/index.ts")).toBeNull();
+    expect(
+      useCaseNameFromFile("/repo/packages/auth/src/feature.manifest.ts"),
+    ).toBeNull();
+  });
+});