Add user management for activation, deactivation, and deletion

Introduce API endpoints and storage methods for setting user passwords, soft deactivation (hiding availability), and hard deletion (removing all associated future data).

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 3a22ac80-cd1d-4441-9e36-f24fc2f4c3de
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shared/schema.ts

@@ -43,6 +43,7 @@ export const users = pgTable("users", {
   role: userRoleEnum("role").default("dj").notNull(),
   isActive: boolean("is_active").default(true).notNull(),
   maxEventsPerMonth: integer("max_events_per_month").default(2).notNull(),
+  password: varchar("password"),
   tempPassword: varchar("temp_password"),
   needsPasswordChange: boolean("needs_password_change").default(false),
   createdAt: timestamp("created_at").defaultNow(),