feat(v0.1): historia cen + jawnosc cen — milestone Initial Release

Historia cen:
- Tabela wp_price_history z WP Cronem dziennym (snapshot cen)
- AJAX endpoint apartamenty_get_price_history (zabezpieczony nonce)
- Popup "Historia cen" w widgecie — vanilla JS, modal zgodny z projektem

Jawnosc cen:
- Endpointy /ceny-mieszkan.xml + /dane-gov-pl.xml (XSD-compliant)
- Pliki MD5 dla obu XML
- Strona admina: Narzedzia -> Jawnosc Cen z URL-ami do Ministerstwa
- Transient cache 1h z inwalidacja przez cron

Dokumentacja: docs/readme.md + docs/jawnosc-cen.md

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

wp-content/plugins/elementor-addon/assets/css/main.scss

@@ -275,3 +275,114 @@
 		}
 	}
 }
+
+// Historia cen — popup overlay
+.price-history-overlay {
+    display: none;
+    position: fixed;
+    inset: 0;
+    z-index: 99999;
+    background: rgba(25, 44, 68, 0.55);
+    align-items: center;
+    justify-content: center;
+    padding: 20px;
+
+    &.is-open {
+        display: flex;
+    }
+}
+
+.price-history-modal {
+    position: relative;
+    background: #fff;
+    border: 4px solid #192c44;
+    padding: 32px 36px 28px;
+    max-width: 560px;
+    width: 100%;
+    font-family: 'Barlow', sans-serif;
+    color: #192c44;
+
+    @media (max-width: 600px) {
+        padding: 24px 20px 20px;
+    }
+
+    &__close {
+        position: absolute;
+        top: 14px;
+        right: 14px;
+        background: none;
+        border: 2px solid #192c44;
+        width: 30px;
+        height: 30px;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        cursor: pointer;
+        padding: 0;
+        line-height: 1;
+    }
+
+    &__title {
+        font-size: 22px;
+        font-weight: 700;
+        margin: 0 0 18px;
+        padding-right: 40px;
+        color: #192c44;
+    }
+
+    &__current {
+        margin-bottom: 16px;
+    }
+
+    &__row {
+        display: flex;
+        justify-content: space-between;
+        font-size: 18px;
+        line-height: 1.5;
+        color: #192c44;
+
+        &--bold {
+            font-weight: 700;
+        }
+    }
+
+    &__val {
+        text-align: right;
+    }
+
+    &__table-wrap {
+        border-top: 1px solid #192c44;
+        padding-top: 12px;
+        margin-top: 4px;
+        max-height: 40vh;
+        overflow-y: auto;
+    }
+
+    &__table {
+        width: 100%;
+        border-collapse: collapse;
+
+        tr {
+            border: none;
+            background: transparent;
+
+            td {
+                padding: 4px 0;
+                font-size: 15px;
+                color: #192c44;
+                font-family: 'Barlow', sans-serif;
+                font-weight: 400;
+                border: none;
+                background: transparent;
+
+                &:last-child {
+                    text-align: right;
+                }
+
+                &:nth-child(2) {
+                    text-align: center;
+                }
+            }
+        }
+    }
+}

wp-content/plugins/elementor-addon/assets/js/main.js

@@ -18,3 +18,109 @@ document.addEventListener('DOMContentLoaded', function () {
         hideClass: 'fancybox-fadeOut',
     });
 });
+
+// Historia cen
+document.addEventListener('DOMContentLoaded', function () {
+    var overlay  = document.getElementById('price-history-overlay');
+    var closeBtn = document.getElementById('price-history-close');
+    var elTitle  = document.getElementById('price-history-title');
+    var elPrice  = document.getElementById('price-history-price');
+    var elPriceM2= document.getElementById('price-history-sqm');
+    var elTbody  = document.getElementById('price-history-tbody');
+
+    if (!overlay || !closeBtn || !elTitle || !elPrice || !elPriceM2 || !elTbody) {
+        console.warn('[historia-cen] Brakuje elementów popupa w DOM:', {
+            overlay: !!overlay, closeBtn: !!closeBtn,
+            elTitle: !!elTitle, elPrice: !!elPrice,
+            elPriceM2: !!elPriceM2, elTbody: !!elTbody
+        });
+        return;
+    }
+
+    function openPopup() {
+        overlay.setAttribute('aria-hidden', 'false');
+        overlay.classList.add('is-open');
+        document.body.style.overflow = 'hidden';
+    }
+
+    function closePopup() {
+        overlay.setAttribute('aria-hidden', 'true');
+        overlay.classList.remove('is-open');
+        document.body.style.overflow = '';
+    }
+
+    // Zamknij przyciskiem X
+    closeBtn.addEventListener('click', closePopup);
+
+    // Zamknij klikając na overlay (poza modalem)
+    overlay.addEventListener('click', function (e) {
+        if (e.target === overlay) closePopup();
+    });
+
+    // Zamknij klawiszem Escape
+    document.addEventListener('keydown', function (e) {
+        if (e.key === 'Escape' && overlay.classList.contains('is-open')) closePopup();
+    });
+
+    // Kliknięcie w przycisk Historia cen
+    document.querySelectorAll('.btn-historia-cen').forEach(function (btn) {
+        btn.addEventListener('click', function () {
+            var postId = this.dataset.postId;
+            if (!postId) return;
+
+            // Reset i pokaż "Ładowanie..."
+            elTitle.textContent   = 'Ładowanie...';
+            elPrice.textContent   = '';
+            elPriceM2.textContent = '';
+            elTbody.innerHTML     = '';
+            openPopup();
+
+            // Sprawdź dostępność danych globalnych (wp_localize_script)
+            if (typeof apartamentsData === 'undefined') {
+                elTitle.textContent = 'Błąd konfiguracji';
+                return;
+            }
+
+            // Buduj FormData
+            var formData = new FormData();
+            formData.append('action',  'apartamenty_get_price_history');
+            formData.append('post_id', postId);
+            formData.append('nonce',   apartamentsData.nonce);
+
+            fetch(apartamentsData.ajaxUrl, {
+                method: 'POST',
+                body: formData,
+                credentials: 'same-origin',
+            })
+            .then(function (res) { return res.json(); })
+            .then(function (json) {
+                if (!json.success) {
+                    elTitle.textContent = 'Brak danych';
+                    return;
+                }
+
+                var d = json.data;
+
+                elTitle.textContent   = d.title || '';
+                elPrice.textContent   = d.price   ? d.price   + ' zł' : '—';
+                elPriceM2.textContent = d.price_m2 ? d.price_m2 + ' zł' : '—';
+
+                if (!d.history || d.history.length === 0) {
+                    elTbody.innerHTML = '<tr><td colspan="3">Brak historii cen</td></tr>';
+                    return;
+                }
+
+                elTbody.innerHTML = d.history.map(function (row) {
+                    return '<tr>' +
+                        '<td>' + (row.recorded_at || '') + '</td>' +
+                        '<td>' + (row.price_m2 ? row.price_m2 + ' zł/m²' : '—') + '</td>' +
+                        '<td>' + (row.price ? row.price + ' zł' : '—') + '</td>' +
+                    '</tr>';
+                }).join('');
+            })
+            .catch(function () {
+                elTitle.textContent = 'Błąd ładowania';
+            });
+        });
+    });
+});

wp-content/plugins/elementor-addon/elementor-addon.php

@@ -83,4 +83,423 @@ function elementor_addon_register_assets() {
 		true
 	);
 }
-add_action( 'wp_enqueue_scripts', 'elementor_addon_register_assets' );
+add_action( 'wp_enqueue_scripts', 'elementor_addon_register_assets' );
+
+/**
+ * Przekaż dane do JS (ajaxUrl + nonce) gdy skrypt jest enqueue'owany przez widget.
+ */
+function elementor_addon_localize_scripts() {
+	wp_localize_script( 'elementor-addon-main-js', 'apartamentsData', [
+		'ajaxUrl' => admin_url( 'admin-ajax.php' ),
+		'nonce'   => wp_create_nonce( 'apartamenty_price_history_nonce' ),
+	] );
+}
+add_action( 'wp_enqueue_scripts', 'elementor_addon_localize_scripts', 20 );
+
+// ===========================================================
+// HISTORIA CEN — TABELA DB
+// ===========================================================
+
+/**
+ * Tworzy tabelę wp_price_history jeśli nie istnieje lub wersja DB jest stara.
+ */
+function elementor_addon_create_price_history_table() {
+	global $wpdb;
+
+	$table_name      = $wpdb->prefix . 'price_history';
+	$charset_collate = $wpdb->get_charset_collate();
+
+	$sql = "CREATE TABLE {$table_name} (
+		id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+		post_id BIGINT UNSIGNED NOT NULL,
+		price VARCHAR(50) NOT NULL DEFAULT '',
+		price_m2 VARCHAR(50) NOT NULL DEFAULT '',
+		floor_space VARCHAR(50) NOT NULL DEFAULT '',
+		recorded_at DATE NOT NULL,
+		PRIMARY KEY (id),
+		UNIQUE KEY unique_daily (post_id, recorded_at),
+		KEY idx_post_id (post_id)
+	) ENGINE=InnoDB {$charset_collate};";
+
+	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+	dbDelta( $sql );
+
+	update_option( 'elementor_addon_db_version', '1.0' );
+}
+register_activation_hook( __FILE__, 'elementor_addon_create_price_history_table' );
+
+/**
+ * Sprawdza wersję DB przy każdym init i tworzy tabelę jeśli brakuje.
+ */
+function elementor_addon_maybe_update_db() {
+	if ( get_option( 'elementor_addon_db_version' ) !== '1.0' ) {
+		elementor_addon_create_price_history_table();
+	}
+}
+add_action( 'init', 'elementor_addon_maybe_update_db' );
+
+// ===========================================================
+// HISTORIA CEN — CRON DZIENNY
+// ===========================================================
+
+/**
+ * Rejestruje WP Cron jeśli jeszcze nie zaplanowany.
+ */
+function elementor_addon_schedule_cron() {
+	if ( ! wp_next_scheduled( 'apartamenty_record_prices' ) ) {
+		wp_schedule_event( time(), 'daily', 'apartamenty_record_prices' );
+	}
+}
+add_action( 'wp', 'elementor_addon_schedule_cron' );
+
+/**
+ * Zapisuje aktualne ceny wszystkich apartamentów do tabeli historii.
+ * Używa INSERT IGNORE — jeden rekord na apartament na dzień.
+ */
+function elementor_addon_record_prices() {
+	global $wpdb;
+
+	delete_transient( 'apartamenty_price_xml_cache' );
+
+	$table_name = $wpdb->prefix . 'price_history';
+	$today      = current_time( 'Y-m-d' );
+
+	$apartaments = new WP_Query( [
+		'post_type'      => 'apartamenty',
+		'post_status'    => 'publish',
+		'posts_per_page' => -1,
+		'fields'         => 'ids',
+	] );
+
+	if ( empty( $apartaments->posts ) ) {
+		return;
+	}
+
+	foreach ( $apartaments->posts as $post_id ) {
+		$price       = get_post_meta( $post_id, 'information_price', true );
+		$price_m2    = get_post_meta( $post_id, 'information_price_m2', true );
+		$floor_space = get_post_meta( $post_id, 'information_floor_space', true );
+
+		$wpdb->query(
+			$wpdb->prepare(
+				"INSERT IGNORE INTO {$table_name} (post_id, price, price_m2, floor_space, recorded_at)
+				 VALUES (%d, %s, %s, %s, %s)",
+				$post_id,
+				(string) $price,
+				(string) $price_m2,
+				(string) $floor_space,
+				$today
+			)
+		);
+	}
+}
+add_action( 'apartamenty_record_prices', 'elementor_addon_record_prices' );
+
+// ===========================================================
+// HISTORIA CEN — AJAX ENDPOINT
+// ===========================================================
+
+/**
+ * Zwraca historię cen dla apartamentu jako JSON.
+ * Wymaga nonce: apartamenty_price_history_nonce
+ */
+function elementor_addon_get_price_history_ajax() {
+	global $wpdb;
+
+	if ( ! check_ajax_referer( 'apartamenty_price_history_nonce', 'nonce', false ) ) {
+		wp_send_json_error( [ 'message' => 'Invalid nonce' ] );
+		die();
+	}
+
+	$post_id = absint( $_POST['post_id'] ?? 0 );
+	if ( ! $post_id ) {
+		wp_send_json_error( [ 'message' => 'Invalid post_id' ] );
+		die();
+	}
+
+	$table_name = $wpdb->prefix . 'price_history';
+
+	$history = $wpdb->get_results(
+		$wpdb->prepare(
+			"SELECT recorded_at, price, price_m2, floor_space
+			 FROM {$table_name}
+			 WHERE post_id = %d
+			 ORDER BY recorded_at DESC
+			 LIMIT 50",
+			$post_id
+		)
+	);
+
+	wp_send_json_success( [
+		'title'       => get_the_title( $post_id ),
+		'price'       => get_post_meta( $post_id, 'information_price', true ),
+		'price_m2'    => get_post_meta( $post_id, 'information_price_m2', true ),
+		'floor_space' => get_post_meta( $post_id, 'information_floor_space', true ),
+		'history'     => $history,
+	] );
+}
+add_action( 'wp_ajax_apartamenty_get_price_history', 'elementor_addon_get_price_history_ajax' );
+add_action( 'wp_ajax_nopriv_apartamenty_get_price_history', 'elementor_addon_get_price_history_ajax' );
+
+// ===========================================================
+// JAWNOŚĆ CEN — XML ENDPOINTS
+// ===========================================================
+
+/**
+ * Rejestruje reguły przepisywania dla endpointów XML.
+ */
+function apartamenty_xml_rewrite_rules() {
+	add_rewrite_rule( '^ceny-mieszkan\.(xml|md5)$', 'index.php?apartamenty_xml=$matches[1]', 'top' );
+	add_rewrite_rule( '^dane-gov-pl\.(xml|md5)$',   'index.php?apartamenty_datagov=$matches[1]', 'top' );
+}
+add_action( 'init', 'apartamenty_xml_rewrite_rules', 10 );
+
+/**
+ * Dodaje query vars dla endpointów XML.
+ */
+function apartamenty_xml_query_vars( $vars ) {
+	$vars[] = 'apartamenty_xml';
+	$vars[] = 'apartamenty_datagov';
+	return $vars;
+}
+add_filter( 'query_vars', 'apartamenty_xml_query_vars' );
+
+/**
+ * Generuje XML z cenami wszystkich apartamentów.
+ * Wynik cachowany w transiencie na 1 godzinę.
+ *
+ * @return string XML jako string
+ */
+function apartamenty_generate_price_xml() {
+	$cached = get_transient( 'apartamenty_price_xml_cache' );
+	if ( false !== $cached ) {
+		return $cached;
+	}
+
+	global $wpdb;
+	$table_name = $wpdb->prefix . 'price_history';
+
+	$query = new WP_Query( [
+		'post_type'      => 'apartamenty',
+		'post_status'    => 'publish',
+		'posts_per_page' => -1,
+		'orderby'        => 'title',
+		'order'          => 'ASC',
+	] );
+
+	$x = function( $val ) {
+		return htmlspecialchars( (string) $val, ENT_XML1, 'UTF-8' );
+	};
+
+	$xml  = '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
+	$xml .= '<lokale inwestycja="Wyszy&#x144;skiego 12" generowany="' . $x( date( 'c' ) ) . '">' . "\n";
+
+	if ( $query->have_posts() ) {
+		foreach ( $query->posts as $post ) {
+			$post_id = $post->ID;
+
+			$type       = get_post_meta( $post_id, 'information_type',        true );
+			$floor      = get_post_meta( $post_id, 'information_floor',       true );
+			$floor_space = get_post_meta( $post_id, 'information_floor_space', true );
+			$price      = get_post_meta( $post_id, 'information_price',       true );
+			$price_m2   = get_post_meta( $post_id, 'information_price_m2',    true );
+			$status     = get_post_meta( $post_id, 'information_status',      true );
+
+			$history = $wpdb->get_results(
+				$wpdb->prepare(
+					"SELECT recorded_at, price, price_m2
+					 FROM {$table_name}
+					 WHERE post_id = %d
+					 ORDER BY recorded_at DESC",
+					$post_id
+				)
+			);
+
+			$last_update = ! empty( $history ) ? $history[0]->recorded_at : date( 'Y-m-d' );
+
+			$xml .= "\t" . '<lokal id="' . absint( $post_id ) . '">' . "\n";
+			$xml .= "\t\t<nazwa>"        . $x( $post->post_title ) . "</nazwa>\n";
+			$xml .= "\t\t<typ>"          . $x( $type )       . "</typ>\n";
+			$xml .= "\t\t<pietro>"       . $x( $floor )      . "</pietro>\n";
+			$xml .= "\t\t<powierzchnia>" . $x( $floor_space ) . "</powierzchnia>\n";
+			$xml .= "\t\t<status>"       . $x( $status )     . "</status>\n";
+			$xml .= "\t\t<cena_brutto>"  . $x( $price )      . "</cena_brutto>\n";
+			$xml .= "\t\t<cena_za_m2>"   . $x( $price_m2 )   . "</cena_za_m2>\n";
+			$xml .= "\t\t<data_aktualizacji>" . $x( $last_update ) . "</data_aktualizacji>\n";
+			$xml .= "\t\t<historia_cen>\n";
+
+			foreach ( $history as $row ) {
+				$xml .= "\t\t\t" . '<zmiana data="' . $x( $row->recorded_at ) . '">' . "\n";
+				$xml .= "\t\t\t\t<cena_brutto>" . $x( $row->price )    . "</cena_brutto>\n";
+				$xml .= "\t\t\t\t<cena_za_m2>"  . $x( $row->price_m2 ) . "</cena_za_m2>\n";
+				$xml .= "\t\t\t</zmiana>\n";
+			}
+
+			$xml .= "\t\t</historia_cen>\n";
+			$xml .= "\t</lokal>\n";
+		}
+	}
+
+	$xml .= '</lokale>';
+
+	set_transient( 'apartamenty_price_xml_cache', $xml, HOUR_IN_SECONDS );
+
+	return $xml;
+}
+
+/**
+ * Generuje XML katalogu dane.gov.pl zgodny z XSD portalu.
+ *
+ * @return string XML jako string
+ */
+function apartamenty_generate_datagov_xml() {
+	$resource_url = home_url( '/ceny-mieszkan.xml' );
+	$last_update  = date( 'Y-m-d\T00:00:00.000\Z' );
+
+	$x = function( $val ) {
+		return htmlspecialchars( (string) $val, ENT_XML1, 'UTF-8' );
+	};
+
+	$xml  = '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
+	$xml .= '<datasets xmlns:xsi="urn:otwarte-dane:harvester:1.0-rc1">' . "\n";
+	$xml .= "\t<dataset status=\"published\">\n";
+	$xml .= "\t\t<extIdent>wyszynskiego12-ceny-mieszkan-v1</extIdent>\n";
+	$xml .= "\t\t<title>\n";
+	$xml .= "\t\t\t<polish>Ceny mieszka&#x144; &#x2013; Wyszy&#x144;skiego 12</polish>\n";
+	$xml .= "\t\t</title>\n";
+	$xml .= "\t\t<description>\n";
+	$xml .= "\t\t\t<polish>Historia cen lokali mieszkalnych w inwestycji przy ul. Wyszy&#x144;skiego 12. Dane aktualizowane codziennie zgodnie z ustaw&#x105; o jawno&#x15B;ci cen.</polish>\n";
+	$xml .= "\t\t</description>\n";
+	$xml .= "\t\t<updateFrequency>daily</updateFrequency>\n";
+	$xml .= "\t\t<categories>REGI</categories>\n";
+	$xml .= "\t\t<resources>\n";
+	$xml .= "\t\t\t<resource status=\"published\">\n";
+	$xml .= "\t\t\t\t<extIdent>wyszynskiego12-ceny-xml-v1</extIdent>\n";
+	$xml .= "\t\t\t\t<url>" . $x( $resource_url ) . "</url>\n";
+	$xml .= "\t\t\t\t<title>\n";
+	$xml .= "\t\t\t\t\t<polish>Cennik lokali XML</polish>\n";
+	$xml .= "\t\t\t\t</title>\n";
+	$xml .= "\t\t\t\t<description>\n";
+	$xml .= "\t\t\t\t\t<polish>Plik XML z aktualnym cennikiem i histori&#x105; zmian cen wszystkich lokali</polish>\n";
+	$xml .= "\t\t\t\t</description>\n";
+	$xml .= "\t\t\t\t<availability>remote</availability>\n";
+	$xml .= "\t\t\t\t<lastUpdateDate>" . $x( $last_update ) . "</lastUpdateDate>\n";
+	$xml .= "\t\t\t</resource>\n";
+	$xml .= "\t\t</resources>\n";
+	$xml .= "\t\t<tags lang=\"pl\">\n";
+	$xml .= "\t\t\t<tag>mieszkania</tag>\n";
+	$xml .= "\t\t\t<tag>ceny</tag>\n";
+	$xml .= "\t\t\t<tag>deweloper</tag>\n";
+	$xml .= "\t\t\t<tag>jawno&#x15B;&#x107; cen</tag>\n";
+	$xml .= "\t\t\t<tag>historia cen</tag>\n";
+	$xml .= "\t\t</tags>\n";
+	$xml .= "\t</dataset>\n";
+	$xml .= '</datasets>';
+
+	return $xml;
+}
+
+/**
+ * Obsługuje żądania do endpointów XML — wysyła odpowiedź i kończy.
+ */
+function apartamenty_xml_template_redirect() {
+	$xml_type     = get_query_var( 'apartamenty_xml' );
+	$datagov_type = get_query_var( 'apartamenty_datagov' );
+
+	if ( $xml_type ) {
+		$content = apartamenty_generate_price_xml();
+		if ( 'xml' === $xml_type ) {
+			header( 'Content-Type: application/xml; charset=UTF-8' );
+			echo $content;
+		} else {
+			header( 'Content-Type: text/plain; charset=UTF-8' );
+			echo md5( $content );
+		}
+		exit;
+	}
+
+	if ( $datagov_type ) {
+		$content = apartamenty_generate_datagov_xml();
+		if ( 'xml' === $datagov_type ) {
+			header( 'Content-Type: application/xml; charset=UTF-8' );
+			echo $content;
+		} else {
+			header( 'Content-Type: text/plain; charset=UTF-8' );
+			echo md5( $content );
+		}
+		exit;
+	}
+}
+add_action( 'template_redirect', 'apartamenty_xml_template_redirect', 1 );
+
+// ===========================================================
+// JAWNOŚĆ CEN — STRONA ADMINISTRACYJNA
+// ===========================================================
+
+/**
+ * Rejestruje stronę Jawność Cen w menu Narzędzia wp-admin.
+ */
+function apartamenty_jawnosc_cen_menu() {
+	add_management_page(
+		'Jawność Cen',
+		'Jawność Cen',
+		'manage_options',
+		'jawnosc-cen',
+		'apartamenty_jawnosc_cen_page'
+	);
+}
+add_action( 'admin_menu', 'apartamenty_jawnosc_cen_menu' );
+
+/**
+ * Renderuje stronę administracyjną z URL-ami do zgłoszenia.
+ */
+function apartamenty_jawnosc_cen_page() {
+	$url_ceny    = esc_url( home_url( '/ceny-mieszkan.xml' ) );
+	$url_datagov = esc_url( home_url( '/dane-gov-pl.xml' ) );
+	?>
+	<div class="wrap">
+		<h1>Jawność Cen — Wyszyńskiego 12</h1>
+
+		<div class="notice notice-info">
+			<p>Dane aktualizowane codziennie przez WP Cron. Zgłoś URL katalogu dane.gov.pl do administratora portalu: <strong>kontakt@dane.gov.pl</strong></p>
+		</div>
+
+		<table class="widefat" style="max-width:800px; margin-top:20px;">
+			<thead>
+				<tr>
+					<th>Plik</th>
+					<th>URL</th>
+					<th>Akcje</th>
+				</tr>
+			</thead>
+			<tbody>
+				<tr>
+					<td><strong>Plik cen (dane)</strong></td>
+					<td><code><?php echo $url_ceny; ?></code></td>
+					<td>
+						<button class="button" onclick="copyUrl('<?php echo esc_js( $url_ceny ); ?>')">Kopiuj URL</button>
+						<a href="<?php echo $url_ceny; ?>" target="_blank" class="button">Otwórz XML</a>
+					</td>
+				</tr>
+				<tr>
+					<td><strong>Katalog dane.gov.pl</strong><br><em>(zgłoś Ministerstwu)</em></td>
+					<td><code><?php echo $url_datagov; ?></code></td>
+					<td>
+						<button class="button button-primary" onclick="copyUrl('<?php echo esc_js( $url_datagov ); ?>')">Kopiuj URL</button>
+						<a href="<?php echo $url_datagov; ?>" target="_blank" class="button">Otwórz XML</a>
+					</td>
+				</tr>
+			</tbody>
+		</table>
+	</div>
+	<script>
+	function copyUrl(url) {
+		navigator.clipboard.writeText(url).then(function() {
+			alert('Skopiowano: ' + url);
+		}).catch(function() {
+			prompt('Skopiuj URL:', url);
+		});
+	}
+	</script>
+	<?php
+}

wp-content/plugins/elementor-addon/widgets/apartaments.php

@@ -156,7 +156,8 @@ class Elementor_Apartaments extends \Elementor\Widget_Base {
                                     <?php endif; ?>
                                     <tr class="apartament-card__price-history">
                                         <td class="apartament-card__info_table-title"></td>
-                                        <td class="apartament-card__info_table-value">
+                                        <td class="apartament-card__info_table-value btn-historia-cen"
+                                            data-post-id="<?php echo esc_attr( get_the_ID() ); ?>">
                                             HISTORIA CEN
 
                                             <svg xmlns="http://www.w3.org/2000/svg" width="12" height="7" viewBox="0 0 12 7" fill="none">
@@ -214,6 +215,33 @@ class Elementor_Apartaments extends \Elementor\Widget_Base {
             <?php wp_reset_postdata(); ?>
         </div>
 
+        <?php // Popup historia cen — jeden globalny, wypełniany przez JS ?>
+        <div class="price-history-overlay" id="price-history-overlay" aria-hidden="true">
+            <div class="price-history-modal" role="dialog" aria-modal="true">
+                <button class="price-history-modal__close" id="price-history-close" aria-label="Zamknij">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 14 14" fill="none">
+                        <path d="M13 1L1 13M1 1L13 13" stroke="#192C44" stroke-width="2" stroke-linecap="round"/>
+                    </svg>
+                </button>
+                <h3 class="price-history-modal__title" id="price-history-title"></h3>
+                <div class="price-history-modal__current">
+                    <div class="price-history-modal__row price-history-modal__row--bold">
+                        <span>Cena brutto:</span>
+                        <span class="price-history-modal__val" id="price-history-price"></span>
+                    </div>
+                    <div class="price-history-modal__row">
+                        <span>Cena m²:</span>
+                        <span class="price-history-modal__val" id="price-history-sqm"> </span>
+                    </div>
+                </div>
+                <div class="price-history-modal__table-wrap">
+                    <table class="price-history-modal__table">
+                        <tbody id="price-history-tbody"></tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
+
         <?php
     }
 }