Implement a new hardcoded permissions system for enhanced user access control

This commit replaces the previous dynamic, database-driven permissions system with a hardcoded, role-based access control (RBAC) structure. New files in `client/src/lib/permissions.ts` and `server/permissions.ts` define permissions per module and role, simplifying management and improving performance. Database tables related to roles, permissions, and user roles have been removed, and associated storage interface methods and routes have been deprecated or updated to reflect the new architecture. The `replit.md` file has also been updated to document these significant changes.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: a8a78c07-e900-425c-a577-5b4c5894379d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/a8a78c07-e900-425c-a577-5b4c5894379d/7SnSmh4

client/src/pages/Users.tsx

@@ -12,6 +12,7 @@ import { useAuthUnified } from "@/hooks/useAuthUnified";
 import { useToast } from "@/hooks/use-toast";
 import { apiRequest } from "@/lib/queryClient";
 import { getRoleTailwindClasses, getRoleDisplayName } from "@/lib/roleUtils";
+import { usePermissions } from "@/lib/permissions";
 import { isUnauthorizedError } from "@/lib/authUtils";
 import { 
   Search,