chore: enforce UPPER_SNAKE_CASE constant naming convention

.eslintrc.js

@@ -153,12 +153,15 @@ module.exports = {
       },
     },
 
+
+
     // ── Config / seed files ───────────────────────────────────────────────────
     {
       files: ['src/**/*.config.ts', 'src/**/*.seed.ts'],
       rules: {
         'no-console': 'off',
       },
     },
+
   ],
 };

src/common/naming/naming.module.ts

@@ -0,0 +1,10 @@
+// src/common/naming/naming.module.ts
+
+import { Module } from '@nestjs/common';
+import { NamingService } from './naming.service';
+
+@Module({
+  providers: [NamingService],
+  exports: [NamingService],
+})
+export class NamingModule {}

src/common/naming/naming.service.ts

@@ -0,0 +1,36 @@
+// src/common/naming/naming.service.ts
+
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class NamingService {
+  toCamelCase(input: string): string {
+    return input
+      .toLowerCase()
+      .replace(/[-_\s]+(.)?/g, (_, c) => (c ? c.toUpperCase() : ''));
+  }
+
+  toSnakeCase(input: string): string {
+    return input
+      .replace(/[A-Z]/g, letter => `_${letter.toLowerCase()}`)
+      .replace(/^_/, '');
+  }
+
+  toPascalCase(input: string): string {
+    return input
+      .replace(/(^\w|[-_\s]+\w)/g, word =>
+        word.replace(/[-_\s]+/, '').toUpperCase(),
+      );
+  }
+
+  toKebabCase(input: string): string {
+    return input
+      .replace(/[A-Z]/g, letter => `-${letter.toLowerCase()}`)
+      .replace(/^-/, '');
+  }
+
+  normalizeKey(input: string): string {
+    // Example: enforce DB-safe keys
+    return this.toSnakeCase(input).replace(/[^a-z0-9_]/g, '');
+  }
+}