Add pricing system with tiers, seasons, and calculator (v0.2.0)

- Create PricingTier enum for short/mid/long-term pricing
- Add Season class for seasonal pricing with date ranges
- Implement Calculator for price calculations with breakdown
- Add pricing meta box to Room post type
- Create Seasons admin page for managing seasonal pricing
- Add Pricing settings tab with tier thresholds
- Support weekend surcharges and configurable weekend days
- Add price column to room list admin

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

assets/js/admin.js

@@ -183,10 +183,107 @@
 		}
 	}
 
+	/**
+	 * Initialize pricing settings functionality.
+	 */
+	function initPricingSettings() {
+		var $midTermInput = $('#wp_bnb_mid_term_max_nights');
+		var $longTermMin = $('#wp-bnb-long-term-min');
+
+		if (!$midTermInput.length || !$longTermMin.length) {
+			return;
+		}
+
+		// Update long-term minimum display when mid-term max changes.
+		$midTermInput.on('input', function() {
+			$longTermMin.text($(this).val());
+		});
+	}
+
+	/**
+	 * Initialize season form validation.
+	 */
+	function initSeasonForm() {
+		var $form = $('.bnb-season-form');
+
+		if (!$form.length) {
+			return;
+		}
+
+		// Validate date format on input.
+		$form.find('#season_start_date, #season_end_date').on('input', function() {
+			var value = $(this).val();
+			var isValid = /^\d{2}-\d{2}$/.test(value);
+
+			if (value.length > 0 && !isValid) {
+				$(this).css('border-color', '#d63638');
+			} else {
+				$(this).css('border-color', '');
+			}
+		});
+
+		// Validate modifier range.
+		$form.find('#season_modifier').on('input', function() {
+			var value = parseFloat($(this).val());
+			var $preview = $(this).siblings('.bnb-modifier-preview');
+
+			if ($preview.length === 0) {
+				$preview = $('<span class="bnb-modifier-preview"></span>');
+				$(this).after($preview);
+			}
+
+			if (!isNaN(value) && value > 0) {
+				var percentage = ((value - 1) * 100).toFixed(0);
+				var text = '';
+				if (percentage > 0) {
+					text = '+' + percentage + '% ' + (wpBnbAdmin.i18n.increase || 'increase');
+					$preview.css('color', '#d63638');
+				} else if (percentage < 0) {
+					text = percentage + '% ' + (wpBnbAdmin.i18n.discount || 'discount');
+					$preview.css('color', '#00a32a');
+				} else {
+					text = wpBnbAdmin.i18n.normalPrice || 'Normal price';
+					$preview.css('color', '#646970');
+				}
+				$preview.text(' = ' + text);
+			} else {
+				$preview.text('');
+			}
+		}).trigger('input');
+	}
+
+	/**
+	 * Initialize pricing meta box interactions.
+	 */
+	function initPricingMetaBox() {
+		var $pricingTable = $('.bnb-pricing-table');
+
+		if (!$pricingTable.length) {
+			return;
+		}
+
+		// Highlight empty required prices.
+		$pricingTable.find('input[type="number"]').on('blur', function() {
+			var $input = $(this);
+			var value = $input.val();
+			var isShortTerm = $input.attr('id').indexOf('short_term') !== -1;
+
+			// Short-term price is recommended.
+			if (isShortTerm && (value === '' || parseFloat(value) <= 0)) {
+				$input.css('background-color', '#fcf0f1');
+			} else {
+				$input.css('background-color', '');
+			}
+		});
+	}
+
 	// Initialize on document ready.
 	$(document).ready(function() {
 		initLicenseManagement();
 		initRoomGallery();
+		initPricingSettings();
+		initSeasonForm();
+		initPricingMetaBox();
 	});
 
 })(jQuery);