feat: align RU validation, error contract, and generator runtime templates

Wire DSL-derived field labels, safe API error JSON (string|string[]), decimal/enum DTO fixes, and client dataProvider without comma-splitting. Add generation/templates/runtime as canonical source copied on generate; extend AID bundle, prompts, validation gate, and docs.

server/package-lock.json

@@ -15,6 +15,8 @@
         "@nestjs/core": "^10.0.0",
         "@nestjs/platform-express": "^10.0.0",
         "@prisma/client": "^5.22.0",
+        "class-transformer": "^0.5.1",
+        "class-validator": "^0.14.1",
         "jose": "^6.2.2",
         "reflect-metadata": "^0.2.0",
         "rxjs": "^7.8.1"
@@ -2426,6 +2428,12 @@
         "@types/superagent": "^8.1.0"
       }
     },
+    "node_modules/@types/validator": {
+      "version": "13.15.10",
+      "resolved": "https://registry.npmmirror.com/@types/validator/-/validator-13.15.10.tgz",
+      "integrity": "sha512-T8L6i7wCuyoK8A/ZeLYt1+q0ty3Zb9+qbSSvrIVitzT3YjZqkTZ40IbRsPanlB4h1QB3JVL1SYCdR6ngtFYcuA==",
+      "license": "MIT"
+    },
     "node_modules/@types/yargs": {
       "version": "17.0.35",
       "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.35.tgz",
@@ -3655,6 +3663,23 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/class-transformer": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmmirror.com/class-transformer/-/class-transformer-0.5.1.tgz",
+      "integrity": "sha512-SQa1Ws6hUbfC98vKGxZH3KFY0Y1lm5Zm0SY8XX9zbK7FJCyVEac3ATW0RIpwzW+oOfmHE5PMPufDG9hCfoEOMw==",
+      "license": "MIT"
+    },
+    "node_modules/class-validator": {
+      "version": "0.14.4",
+      "resolved": "https://registry.npmmirror.com/class-validator/-/class-validator-0.14.4.tgz",
+      "integrity": "sha512-AwNusCCam51q703dW82x95tOqQp6oC9HNUl724KxJJOfnKscI8dOloXFgyez7LbTTKWuRBA37FScqVbJEoq8Yw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/validator": "^13.15.3",
+        "libphonenumber-js": "^1.11.1",
+        "validator": "^13.15.22"
+      }
+    },
     "node_modules/cli-cursor": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-3.1.0.tgz",
@@ -6823,6 +6848,12 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/libphonenumber-js": {
+      "version": "1.12.40",
+      "resolved": "https://registry.npmmirror.com/libphonenumber-js/-/libphonenumber-js-1.12.40.tgz",
+      "integrity": "sha512-HKGs7GowShNls3Zh+7DTr6wYpPk5jC78l508yQQY3e8ZgJChM3A9JZghmMJZuK+5bogSfuTafpjksGSR3aMIEg==",
+      "license": "MIT"
+    },
     "node_modules/lines-and-columns": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/lines-and-columns/-/lines-and-columns-1.2.4.tgz",
@@ -9462,6 +9493,15 @@
         "node": ">=10.12.0"
       }
     },
+    "node_modules/validator": {
+      "version": "13.15.26",
+      "resolved": "https://registry.npmmirror.com/validator/-/validator-13.15.26.tgz",
+      "integrity": "sha512-spH26xU080ydGggxRyR1Yhcbgx+j3y5jbNXk/8L+iRvdIEQ4uTRH2Sgf2dokud6Q4oAtsbNvJ1Ft+9xmm6IZcA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",