feat: enforce frontend quality guardrails

dependency-cruiser.cjs

@@ -1,22 +1,43 @@
 module.exports = {
 	forbidden: [
+		{
+			name: "no-circular",
+			severity: "error",
+			from: {},
+			to: { circular: true },
+		},
+		{
+			name: "slices-must-use-public-api",
+			severity: "error",
+			from: {
+				path: "^src/(app|pages|features|entities|shared)/([^/]+)/",
+			},
+			to: {
+				path: "^src/(app|pages|features|entities|shared)/([^/]+)/(?!index\\.ts$)",
+				pathNot: "^src/$1/$2/",
+			},
+		},
 		{
 			name: "shared-must-not-depend-on-layers",
+			severity: "error",
 			from: { path: "^src/shared/" },
 			to: { path: "^src/(entities|features|pages|app)/" },
 		},
 		{
 			name: "entities-must-not-depend-on-higher-layers",
+			severity: "error",
 			from: { path: "^src/entities/" },
 			to: { path: "^src/(features|pages|app)/" },
 		},
 		{
 			name: "features-must-not-depend-on-higher-layers",
+			severity: "error",
 			from: { path: "^src/features/" },
 			to: { path: "^src/(pages|app)/" },
 		},
 		{
 			name: "pages-must-not-depend-on-app",
+			severity: "error",
 			from: { path: "^src/pages/" },
 			to: { path: "^src/app/" },
 		},