refactor: organize supply frontend structure

src/test/module-boundaries.test.ts

@@ -0,0 +1,51 @@
+import { existsSync, readdirSync, readFileSync } from "node:fs";
+import { join, relative } from "node:path";
+import { describe, expect, it } from "vitest";
+
+const sourceRoot = join(process.cwd(), "src");
+
+function listRuntimeFiles(directory: string): string[] {
+  return readdirSync(directory, { withFileTypes: true }).flatMap((entry) => {
+    const target = join(directory, entry.name);
+    if (entry.isDirectory()) return listRuntimeFiles(target);
+    if (!/\.(ts|tsx)$/.test(entry.name) || /\.(test|e2e)\.(ts|tsx)$/.test(entry.name)) return [];
+    return [target];
+  });
+}
+
+function findMatches(directory: string, pattern: RegExp): string[] {
+  return listRuntimeFiles(directory).flatMap((file) => {
+    const source = readFileSync(file, "utf8");
+    return pattern.test(source) ? [relative(sourceRoot, file)] : [];
+  });
+}
+
+describe("frontend module boundaries", () => {
+  it("uses public feature entry points for absolute feature imports", () => {
+    expect(findMatches(sourceRoot, /@\/features\/(?:agent|workbench|map\/core)\//)).toEqual([]);
+  });
+
+  it("keeps shared independent from app, features, and mocks", () => {
+    expect(findMatches(join(sourceRoot, "shared"), /@\/(?:app|features|mocks)\//)).toEqual([]);
+  });
+
+  it("keeps map core independent from Agent and workbench code", () => {
+    expect(
+      findMatches(
+        join(sourceRoot, "features/map/core"),
+        /@\/features\/(?:agent|workbench)(?:\/|["'])/
+      )
+    ).toEqual([]);
+  });
+
+  it("keeps Agent code independent from workbench code", () => {
+    expect(
+      findMatches(join(sourceRoot, "features/agent"), /@\/features\/workbench(?:\/|["'])/)
+    ).toEqual([]);
+  });
+
+  it("does not restore Next.js client directives or the catch-all lib directory", () => {
+    expect(findMatches(sourceRoot, /^["']use client["'];?/m)).toEqual([]);
+    expect(existsSync(join(sourceRoot, "lib"))).toBe(false);
+  });
+});