update sample app

cfg/sample/data/tools.json

@@ -1,47 +1,36 @@
 {
   "items": [
-    {
-      "name": "tester",
-      "slug": "tester",
-      "title": "Contract Tests",
-      "status": "live",
-      "system": "ward",
-      "type": "app",
-      "description": "HTTP contract test runner with multi-environment support. Filter, run, and track tests against dev/stage/prod.",
-      "path": "ward/tools/tester",
-      "url": "/tools/tester/"
-    },
     {
       "name": "datagen",
       "slug": "datagen",
-      "title": "Test Data Generator",
+      "title": "Datagen",
       "status": "live",
-      "system": "ward",
-      "type": "cli",
-      "description": "Generate realistic test data for Amar domain (users, pets, services) and MercadoPago API responses. Used by mock veins and test seeders.",
-      "path": "ward/tools/datagen",
-      "cli": "python -m datagen"
+      "system": "station",
+      "type": "app",
+      "description": "Generate realistic test data via faker-backed generators.",
+      "path": "station/tools/datagen",
+      "url": "/station/tools/datagen/"
     },
     {
-      "name": "generate_test_data",
-      "slug": "generate-test-data",
-      "title": "DB Test Data Extractor",
-      "status": "dev",
-      "system": "ward",
-      "type": "cli",
-      "description": "Extract representative subsets from PostgreSQL dumps for testing/development.",
-      "path": "ward/tools/generate_test_data",
-      "cli": "python -m generate_test_data"
+      "name": "graphgen",
+      "slug": "graphgen",
+      "title": "Graphgen",
+      "status": "live",
+      "system": "station",
+      "type": "app",
+      "description": "Render the data model as an interactive graph (entities + FK edges).",
+      "path": "station/tools/graphgen",
+      "url": "/station/tools/graphgen/"
     },
     {
       "name": "modelgen",
       "slug": "modelgen",
-      "title": "Model Generator",
-      "status": "dev",
-      "system": "ward",
+      "title": "Modelgen",
+      "status": "live",
+      "system": "station",
       "type": "cli",
       "description": "Generate platform-specific models (Pydantic, Django, Prisma) from JSON Schema.",
-      "path": "ward/tools/modelgen",
+      "path": "station/tools/modelgen",
       "cli": "python -m modelgen"
     }
   ]