feat(121+122): smsplanet conversation, notifications, default footer

Phase 121 — SMSPLANET Conversation + Notifications:
- migration 20260512_000110 adds smsplanet conversation + notifications tables
- src/Modules/Sms (SmsConversationService, SmsMessageRepository, SmsplanetWebhookController)
- src/Modules/Notifications (Repository, Controller, ApiController)
- order SMS tab, notification center, sender mode, inbound webhook
- public notifications.js + layouts/app.php integration

Phase 122 — SMSPLANET Default SMS Footer:
- migration 20260512_000111 adds smsplanet_integration_settings.default_footer
- footer appended to test SMS and order SMS, validated against 918 char limit
- settings textarea + compact order SMS note when footer configured

Bundled (could not split per-phase without hunk staging):
- routes/web.php (also carries Phase 118 fakturownia redirects)
- DOCS/{ARCHITECTURE,DB_SCHEMA,TECH_CHANGELOG}.md (118 + 121 + 122 entries)
- .paul/codebase/{architecture,db_schema,tech_changelog}.md (118 + 121 + 122)
- .paul/STATE.md, ROADMAP.md, changelog/2026-05-12.md (UNIFY closure)

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

public/assets/js/modules/notifications.js

@@ -0,0 +1,81 @@
+(function () {
+  var badge = document.getElementById('js-notification-badge');
+  var button = document.getElementById('js-notification-button');
+  if (!badge || !button || typeof fetch !== 'function') return;
+
+  var seenKey = 'orderproSeenNotificationIds';
+  var seenIds = loadSeenIds();
+  var permissionAsked = false;
+
+  function loadSeenIds() {
+    try {
+      return JSON.parse(localStorage.getItem(seenKey) || '[]').map(String);
+    } catch (e) {
+      return [];
+    }
+  }
+
+  function saveSeenIds() {
+    try {
+      localStorage.setItem(seenKey, JSON.stringify(seenIds.slice(-100)));
+    } catch (e) {}
+  }
+
+  function updateBadge(count) {
+    var value = Math.max(0, Number(count) || 0);
+    badge.textContent = value > 99 ? '99+' : String(value);
+    badge.hidden = value === 0;
+  }
+
+  function requestPermission() {
+    if (permissionAsked || !('Notification' in window) || Notification.permission !== 'default') {
+      return Promise.resolve();
+    }
+    permissionAsked = true;
+    return Notification.requestPermission().catch(function () {});
+  }
+
+  function showBrowserNotification(item) {
+    var id = String(item.id || '');
+    if (id === '' || seenIds.indexOf(id) !== -1) return;
+
+    seenIds.push(id);
+    saveSeenIds();
+    if (!('Notification' in window) || Notification.permission !== 'granted') return;
+
+    var nativeNotification = new Notification(item.title || 'orderPRO', {
+      body: item.body || '',
+      tag: 'orderpro-notification-' + id
+    });
+    nativeNotification.onclick = function () {
+      window.focus();
+      if (item.target_url) {
+        window.location.href = item.target_url;
+      }
+    };
+  }
+
+  function poll() {
+    fetch('/api/notifications/unread', { credentials: 'same-origin' })
+      .then(function (response) { return response.ok ? response.json() : null; })
+      .then(function (data) {
+        if (!data || !data.ok) return;
+        updateBadge(data.count);
+        if (Array.isArray(data.items)) {
+          data.items.slice().reverse().forEach(showBrowserNotification);
+        }
+      })
+      .catch(function () {});
+  }
+
+  button.addEventListener('click', function (event) {
+    if ('Notification' in window && Notification.permission === 'default') {
+      event.preventDefault();
+      requestPermission().finally(function () {
+        window.location.href = button.href;
+      });
+    }
+  });
+  poll();
+  window.setInterval(poll, 30000);
+})();