v1.7.0: refactor max_bot to flat structure, add VCF+UserModel+NLP history context, portal pages and proxy fixes

- Refactored max_bot from nested packages to flat module structure
- Q2: Extended BotUser model (patronymic, email, org, address, vcf_raw, contact_hash, phone_verified, email_verified, last_interaction, total_conversations, total_tickets)
- Q2: VCF parser (FN, N, TEL, EMAIL, ORG, ADR), upsert on re-contact, NLP history context (_get_user_history_context -> YandexGPT)
- Q1: Broadcast preview modal with 10s confirmation timer
- Q3: CSS var(--white)->var(--bg-card), var(--text)->var(--text-primary)
- Q4: bot_settings showNotification(), editable max_bot_id
- Q5: Webhook secret passthrough via X-Max-Bot-Api-Secret
- Masking sensitive keys, dialog_cleared handler, migrate via _add_column_if_not_exists()
- Rate limit (asyncio.sleep 0.5 per 10), dead code removed, conv.intent context in contact.py
- Portal pages: bot_consent, bot_kb (edit), bot_settings, bot_test, bot_tickets, portal_settings
- Tests: 21/21 passing, added test_yandex_gpt.py, test_email_sender.py
- Deploy: deploy_full.sh, schema.sql, seed_knowledge_base.sql

py_service/app/static/js/theme.js

@@ -9,15 +9,12 @@
   function applyTheme(theme) {
     var resolved = theme === 'system' ? getSystemTheme() : theme;
     document.documentElement.setAttribute('data-theme', resolved);
-    var label = document.getElementById('theme-label');
-    if (label) {
-      var names = { system: 'Авто', dark: 'Тёмная', light: 'Светлая' };
-      label.textContent = names[theme] || 'Авто';
-    }
+    var names = { system: 'Авто', dark: 'Тёмная', light: 'Светлая' };
+    var icons = { system: '🖥', dark: '🌙', light: '☀️' };
     var btn = document.getElementById('theme-btn');
     if (btn) {
-      var icons = { system: '🖥', dark: '🌙', light: '☀️' };
       btn.textContent = icons[theme] || '🖥';
+      btn.title = names[theme] || 'Авто';
     }
   }