chore(architecture): enforce app data boundaries

eslint.config.mjs

@@ -5,6 +5,37 @@ import nextTs from "eslint-config-next/typescript";
 const eslintConfig = defineConfig([
   ...nextVitals,
   ...nextTs,
+  {
+    files: ["src/app/**/*.{ts,tsx}"],
+    ignores: ["src/app/api/**", "src/app/**/route.ts"],
+    rules: {
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: [
+            {
+              group: [
+                "@/data/repositories",
+                "@/data/repositories/*",
+                "@/data/repositories/**",
+              ],
+              message:
+                "App UI should depend on stores or lib use-case helpers instead of repositories.",
+            },
+            {
+              group: [
+                "@/data/storage",
+                "@/data/storage/*",
+                "@/data/storage/**",
+              ],
+              message:
+                "App UI should not access storage directly; move persistence behind lib or stores.",
+            },
+          ],
+        },
+      ],
+    },
+  },
   // Override default ignores of eslint-config-next.
   globalIgnores([
     // Default ignores of eslint-config-next: