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

max_bot/app/database.py

@@ -1,22 +1,13 @@
-from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
-from app.config import get_settings
-
-settings = get_settings()
-
-engine_kwargs = {"echo": False}
-if "postgresql" in settings.DATABASE_URL:
-    engine_kwargs["pool_size"] = 10
-    engine_kwargs["max_overflow"] = 20
-engine = create_async_engine(settings.DATABASE_URL, **engine_kwargs)
+from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
+from app.config import settings
 
+engine = create_async_engine(settings.database_url, pool_size=10, max_overflow=20)
 async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
 
 
-async def get_db():
+async def get_db() -> AsyncSession:
     async with async_session() as session:
         try:
             yield session
-            await session.commit()
-        except Exception:
-            await session.rollback()
-            raise
+        finally:
+            await session.close()