feat(bookings): improve admin booking wizard and user dashboard

Backend:
- Enriched GetAllUserBookings response with calculated total_amount,
  amount_paid, and duration_minutes.
- Refactored GetBookingHandler to return a flat booking object matching
  frontend expectations.
- Added account_role to admin user list response and sorted users by
  booking activity.
- Corrected function name oo to AdminCreateBookingForUserHandler.

Frontend:
- Rebuilt BookingCreateModal into a 4-step wizard supporting guest
  bookings, service overrides, and real-time availability checks.
- Fixed account dashboard logic to correctly identify upcoming vs past
  bookings and sort unpaid items to the top.
- Extracted booking flow into a shared BookingFlow component.
- Redirected admin users from home page to /today.

backend/handlers/user/profile.go

@@ -78,10 +78,11 @@ type SocialLogin struct {
 }
 
 type UserListItem struct {
-	ID       string  `json:"id"`
-	FullName string  `json:"fullName"`
-	Email    *string `json:"email,omitempty"`
-	Phone    *string `json:"phone,omitempty"`
+	ID          string  `json:"id"`
+	FullName    string  `json:"fullName"`
+	Email       *string `json:"email,omitempty"`
+	Phone       *string `json:"phone,omitempty"`
+	AccountRole string  `json:"account_role"`
 }
 
 type UserListResponse struct {
@@ -386,35 +387,39 @@ func ListAdminUsersHandler(w http.ResponseWriter, r *http.Request) {
 		searchPattern := "%" + searchTerm + "%"
 
 		countQuery = `
-			SELECT COUNT(*)
-			FROM users
-			WHERE fn ILIKE $1
-			   OR email ILIKE $1
-			   OR phone ILIKE $1
-		`
+            SELECT COUNT(*)
+            FROM users
+            WHERE fn ILIKE $1
+               OR email ILIKE $1
+               OR phone ILIKE $1
+        `
 		countArgs = []interface{}{searchPattern}
 
 		listQuery = `
-			SELECT id, fn, email, phone
-			FROM users
-			WHERE fn ILIKE $1
-			   OR email ILIKE $1
-			   OR phone ILIKE $1
-			ORDER BY created_at DESC
-			LIMIT $2 OFFSET $3
-		`
+            SELECT u.id, u.fn, u.email, u.phone, u.account_role
+            FROM users u
+            LEFT JOIN bookings b ON u.id = b.user_id
+            WHERE u.fn ILIKE $1
+               OR u.email ILIKE $1
+               OR u.phone ILIKE $1
+            GROUP BY u.id, u.fn, u.email, u.phone, u.account_role, u.created_at
+            ORDER BY COUNT(b.id) DESC, u.created_at DESC
+            LIMIT $2 OFFSET $3
+        `
 		listArgs = []interface{}{searchPattern, perPage, offset}
 	} else {
-		// No search - get all users
+		// No search - get all users, sorted by booking count
 		countQuery = `SELECT COUNT(*) FROM users`
 		countArgs = []interface{}{}
 
 		listQuery = `
-			SELECT id, fn, email, phone
-			FROM users
-			ORDER BY created_at DESC
-			LIMIT $1 OFFSET $2
-		`
+            SELECT u.id, u.fn, u.email, u.phone, u.account_role
+            FROM users u
+            LEFT JOIN bookings b ON u.id = b.user_id
+            GROUP BY u.id, u.fn, u.email, u.phone, u.account_role, u.created_at
+            ORDER BY COUNT(b.id) DESC, u.created_at DESC
+            LIMIT $1 OFFSET $2
+        `
 		listArgs = []interface{}{perPage, offset}
 	}
 
@@ -439,7 +444,13 @@ func ListAdminUsersHandler(w http.ResponseWriter, r *http.Request) {
 	var users []UserListItem
 	for rows.Next() {
 		var user UserListItem
-		err := rows.Scan(&user.ID, &user.FullName, &user.Email, &user.Phone)
+		err := rows.Scan(
+			&user.ID,
+			&user.FullName,
+			&user.Email,
+			&user.Phone,
+			&user.AccountRole,
+		)
 		if err != nil {
 			log.Printf("Failed to scan user row: %v", err)
 			http.Error(w, "Internal server error", http.StatusInternalServerError)