refactor: fix biome linting issues and update project documentation

- Fix 36+ biome linting issues reducing errors/warnings from 227 to 191
- Replace explicit 'any' types with proper TypeScript interfaces
- Fix React hooks dependencies and useCallback patterns
- Resolve unused variables and parameter assignment issues
- Improve accessibility with proper label associations
- Add comprehensive API documentation for admin and security features
- Update README.md with accurate PostgreSQL setup and current tech stack
- Create complete documentation for audit logging, CSP monitoring, and batch processing
- Fix outdated project information and missing developer workflows

tests/integration/csv-import-workflow.test.ts

@@ -346,7 +346,9 @@ session4,user4,en,US,192.168.1.4,positive,5,2024-01-15T10:00:00Z,2024-01-15T10:3
   describe("Batch Import Performance", () => {
     it("should handle large CSV files efficiently", async () => {
       // Generate large CSV with 1000 rows
-      const largeCSVRows = ["sessionId,userId,language,country,ipAddress,sentiment,messagesSent,startTime,endTime,escalated,forwardedHr,summary"];
+      const largeCSVRows = [
+        "sessionId,userId,language,country,ipAddress,sentiment,messagesSent,startTime,endTime,escalated,forwardedHr,summary",
+      ];
 
       for (let i = 0; i < 1000; i++) {
         largeCSVRows.push(
@@ -379,4 +381,4 @@ session4,user4,en,US,192.168.1.4,positive,5,2024-01-15T10:00:00Z,2024-01-15T10:3
       expect(importCount).toBe(1000);
     });
   });
-});
+});