feat(admin): add posts CRUD sandbox and shared CRUD foundation

bun.lock

@@ -95,11 +95,24 @@
         "typescript": "5.9.3",
       },
     },
+    "packages/crud": {
+      "name": "@cms/crud",
+      "version": "0.0.1",
+      "dependencies": {
+        "zod": "4.3.6",
+      },
+      "devDependencies": {
+        "@biomejs/biome": "2.3.14",
+        "@cms/config": "workspace:*",
+        "typescript": "5.9.3",
+      },
+    },
     "packages/db": {
       "name": "@cms/db",
       "version": "0.0.1",
       "dependencies": {
         "@cms/content": "workspace:*",
+        "@cms/crud": "workspace:*",
         "@prisma/adapter-pg": "7.3.0",
         "@prisma/client": "7.3.0",
         "pg": "8.18.0",
@@ -273,6 +286,8 @@
 
     "@cms/content": ["@cms/content@workspace:packages/content"],
 
+    "@cms/crud": ["@cms/crud@workspace:packages/crud"],
+
     "@cms/db": ["@cms/db@workspace:packages/db"],
 
     "@cms/i18n": ["@cms/i18n@workspace:packages/i18n"],