feat: simplify pricing and room selection display

src/Service/BookingPriceCalculatorService.php

@@ -183,30 +183,6 @@ class BookingPriceCalculatorService
         return $surchargePricing;
     }
 
-    /**
-     * Formats a price value for display with proper German formatting.
-     *
-     * @param float $price The price to format
-     *
-     * @return string Formatted price string (e.g., "123,45")
-     */
-    public function formatPrice(float $price): string
-    {
-        return number_format($price, 2, ',', '.');
-    }
-
-    /**
-     * Formats a price with Euro symbol for display.
-     *
-     * @param float $price The price to format
-     *
-     * @return string Formatted price string with Euro symbol (e.g., "€123,45")
-     */
-    public function formatPriceWithSymbol(float $price): string
-    {
-        return '€'.$this->formatPrice($price);
-    }
-
     /**
      * Aggregates all transportation-related services and pricing into separate line items.
      *

src/Service/BookingService.php

@@ -334,18 +334,6 @@ class BookingService
         return $participantsCount;
     }
 
-    /**
-     * Calculates the number of participants assigned to each room ID.
-     *
-     * @return array<int, int> an array where the key is the room ID and the value is the count of assigned participants
-     *
-     * @deprecated Use BookingDto::getRoomAssignmentCounts() instead
-     */
-    public function getRoomAssignmentCounts(BookingDto $bookingDto): array
-    {
-        return $bookingDto->getRoomAssignmentCounts();
-    }
-
     /**
      * Returns a summary of selected rooms, participant count, and pricing information for a booking.
      *
@@ -424,45 +412,6 @@ class BookingService
         return $groups;
     }
 
-    /**
-     * Resets all participant room assignments in the DTO.
-     *
-     * @param BookingDto $dto The booking DTO to reset assignments for
-     *
-     * @deprecated Use BookingDto::resetParticipantAssignments() instead
-     */
-    public function resetParticipantAssignments(BookingDto $dto): void
-    {
-        $dto->resetParticipantAssignments();
-    }
-
-    /**
-     * Creates a snapshot of the current room selection state.
-     *
-     * @return array<int, array{int, int}> Array of [roomId, quantity] pairs
-     *
-     * @deprecated Use BookingDto::createRoomSelectionSnapshot() instead
-     */
-    public function createRoomSelectionSnapshot(BookingDto $dto): array
-    {
-        return $dto->createRoomSelectionSnapshot();
-    }
-
-    /**
-     * Checks if room selection has changed compared to a previous snapshot.
-     *
-     * @param array      $oldSnapshot The baseline room selection snapshot
-     * @param BookingDto $newDto      The current booking DTO
-     *
-     * @return bool True if room selections have changed, false otherwise
-     *
-     * @deprecated Use BookingDto::hasRoomSelectionChanged() instead
-     */
-    public function hasRoomSelectionChanged(array $oldSnapshot, BookingDto $newDto): bool
-    {
-        return $newDto->hasRoomSelectionChanged($oldSnapshot);
-    }
-
     /**
      * Pre-selects default services for all participants.
      *