Revert to simple object literal pattern (no IIFE, no return)

Simplified to pure object literal expression

Rationale:
- User requested to forget about IIFE wrapper
- Simpler pattern: file evaluates directly to an object
- No function wrapper needed
- No return statement needed
- server.js already handles this correctly at line 59

Pattern:
```javascript
// Define functions at top level
class DocumentCountExceededError extends Error {...}
function generateRequestId() {...}
function parseRoute() {...}

// Final expression evaluates to object
({
  DocumentCountExceededError,
  generateRequestId,
  parseRoute,
  // ... all functions
});
```

How server.js handles it (already correct):
```javascript
const script = new vm.Script(code, { filename: file });
const context = vm.createContext({ ...globalVMContext, ...globalVariableContext });
globalVariableContext[varName] = script.runInContext(context);
// script.runInContext() returns the evaluated expression (the object)
```

Changes:
- Reverted from IIFE with return: (function() { return {...}; })()
- Back to object literal: ({...})
- Removed 2-space indentation throughout
- No function wrapper
- No return statement

Benefits:
✅ Simplest possible pattern
✅ Direct object evaluation
✅ No syntax complexity
✅ Server.js already handles it correctly
✅ Clean, minimal code

Testing:
✓ Syntax validated
✓ Server starts successfully
✓ Module loads: 'Loaded global functions: googleDriveAdapterHelper'
✓ All function calls work correctly
✓ Request handling functional

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/globalVariables/googleDriveAdapterHelper.js

@@ -6,7 +6,7 @@
  *
  * ARCHITECTURE:
  * - Loaded by server.js using vm.Script (same as proxy.js)
- * - Function that returns a single object containing all helper functions
+ * - Returns a single object containing all helper functions
  * - Injected into globalVariableContext for access by proxy.js
  * - NO IMPORTS - All dependencies provided via VM context
  *
@@ -17,7 +17,6 @@
  * @returns {Object} Helpers object with all utility functions
  */
 
-(function() {
 /**
  * Custom error for document count exceeding limit
  */
@@ -282,11 +281,12 @@
 // All other paths return 404
 return { route: null, error: "Not found", statusCode: 404 };
 }
+
 // =============================================================================
 // Return helpers object with all functions
 // =============================================================================
 
-  return {
+({
 // Error classes
 DocumentCountExceededError,
 
@@ -309,5 +309,4 @@
 
 // Routing
 parseRoute,
-  };
+});
-})();