Deliver Steps 3-8: integration config, meal plans, provider registry, MCP connector (14 tools), B2A files, nginx proxy, AGENT_GUIDE, LICENSE

backend/app/models/integration_config.py

@@ -0,0 +1,25 @@
+"""Integration configuration model — encrypted credential storage."""
+from __future__ import annotations
+
+import uuid
+from datetime import datetime, timezone
+from sqlalchemy import String, DateTime, Text, UniqueConstraint
+from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.dialects.postgresql import UUID
+from app.database import Base
+
+
+class IntegrationConfig(Base):
+    __tablename__ = "integration_configs"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    user_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), nullable=False)
+    provider: Mapped[str] = mapped_column(String(50), nullable=False)
+    config_key: Mapped[str] = mapped_column(String(100), nullable=False)
+    config_value: Mapped[str] = mapped_column(Text, nullable=False)  # Fernet encrypted
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
+    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
+
+    __table_args__ = (
+        UniqueConstraint("user_id", "provider", "config_key", name="uq_integration_config"),
+    )