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>

resources/scss/app.scss

@@ -2126,6 +2126,137 @@ details[open] > .order-statuses-side__title .order-statuses-side__arrow {
   display: block;
 }
 
+.order-sms-head,
+.notifications-page__head {
+  align-items: center;
+  display: flex;
+  gap: 12px;
+  justify-content: space-between;
+}
+
+.order-sms-thread {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.order-sms-bubble {
+  background: #f8fafc;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  max-width: 76%;
+  padding: 8px 10px;
+}
+
+.order-sms-bubble--outbound {
+  align-self: flex-end;
+  background: #ecfdf5;
+  border-color: #bbf7d0;
+}
+
+.order-sms-bubble--inbound {
+  align-self: flex-start;
+}
+
+.order-sms-bubble__meta {
+  color: #64748b;
+  display: flex;
+  flex-wrap: wrap;
+  font-size: 12px;
+  gap: 8px;
+}
+
+.order-sms-bubble__body {
+  color: #0f172a;
+  font-size: 14px;
+  line-height: 1.35;
+  margin: 4px 0;
+  overflow-wrap: anywhere;
+}
+
+.order-sms-form {
+  display: grid;
+  gap: 10px;
+}
+
+.topbar-notifications {
+  align-items: center;
+  border: 1px solid #dbe4ef;
+  border-radius: 8px;
+  color: #334155;
+  display: inline-flex;
+  height: 34px;
+  justify-content: center;
+  position: relative;
+  width: 38px;
+}
+
+.topbar-notifications:hover {
+  background: #f8fafc;
+  color: #0f172a;
+}
+
+.topbar-notifications__badge {
+  align-items: center;
+  background: #dc2626;
+  border-radius: 999px;
+  color: #fff;
+  display: inline-flex;
+  font-size: 11px;
+  font-weight: 700;
+  height: 18px;
+  justify-content: center;
+  min-width: 18px;
+  padding: 0 5px;
+  position: absolute;
+  right: -6px;
+  top: -6px;
+}
+
+.notifications-list {
+  display: grid;
+  gap: 8px;
+}
+
+.notification-row {
+  align-items: center;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  display: flex;
+  gap: 12px;
+  justify-content: space-between;
+  padding: 10px 12px;
+}
+
+.notification-row--unread {
+  background: #f8fafc;
+  border-color: #93c5fd;
+}
+
+.notification-row__title {
+  color: #0f172a;
+  font-weight: 700;
+}
+
+.notification-row__body {
+  color: #334155;
+  margin-top: 3px;
+  overflow-wrap: anywhere;
+}
+
+.notification-row__meta {
+  color: #64748b;
+  font-size: 12px;
+  margin-top: 4px;
+}
+
+.notification-row__actions {
+  align-items: center;
+  display: flex;
+  flex-shrink: 0;
+  gap: 8px;
+}
+
 .manual-tracking-form {
   display: flex;
   gap: 8px;
@@ -2753,6 +2884,26 @@ details[open] > .order-statuses-side__title .order-statuses-side__arrow {
   accent-color: var(--c-action-primary);
 }
 
+.smsplanet-sender-phone-field {
+  grid-column: 2;
+}
+
+.smsplanet-default-footer-field {
+  grid-column: 1 / -1;
+}
+
+.smsplanet-default-footer-field textarea {
+  min-height: 78px;
+  resize: vertical;
+}
+
+.order-sms-footer-note {
+  color: #64748b;
+  display: block;
+  font-size: 12px;
+  margin-top: 4px;
+}
+
 // Hamburger button (hidden on desktop)
 .topbar__hamburger {
   display: none;
@@ -2934,6 +3085,14 @@ body.no-scroll {
     grid-template-columns: 1fr;
   }
 
+  .smsplanet-sender-phone-field {
+    grid-column: 1;
+  }
+
+  .smsplanet-default-footer-field {
+    grid-column: 1;
+  }
+
   .card {
     padding: 12px;
   }