feat: comprehensive security and architecture improvements

- Add Zod validation schemas with strong password requirements (12+ chars, complexity)
- Implement rate limiting for authentication endpoints (registration, password reset)
- Remove duplicate MetricCard component, consolidate to ui/metric-card.tsx
- Update README.md to use pnpm commands consistently
- Enhance authentication security with 12-round bcrypt hashing
- Add comprehensive input validation for all API endpoints
- Fix security vulnerabilities in user registration and password reset flows

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

test-import-processing.ts

@@ -1,16 +1,15 @@
-import { processQueuedImports } from './lib/importProcessor';
+import { processQueuedImports } from "./lib/importProcessor";
 
 async function testImportProcessing() {
-  console.log('=== TESTING IMPORT PROCESSING ===\n');
-  
+  console.log("=== TESTING IMPORT PROCESSING ===\n");
+
   try {
     // Process with batch size of 50 to test multiple batches
     await processQueuedImports(50);
-    
-    console.log('\n=== IMPORT PROCESSING COMPLETED ===');
-    
+
+    console.log("\n=== IMPORT PROCESSING COMPLETED ===");
   } catch (error) {
-    console.error('Error during import processing:', error);
+    console.error("Error during import processing:", error);
   }
 }