feat: T03+T04 backend - FastAPI, DB models, Rentman integration, admin auth, APScheduler

backend/app/models/__init__.py

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+"""Import all models for Alembic and Base metadata."""
+from app.models.equipment import EquipmentCache
+from app.models.rental_request import RentalRequest, RentalRequestItem
+from app.models.contact import Contact
+from app.models.admin_user import AdminUser
+from app.models.sync_log import SyncLog
+
+__all__ = ["EquipmentCache", "RentalRequest", "RentalRequestItem", "Contact", "AdminUser", "SyncLog"]

backend/app/models/admin_user.py

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+"""Admin user model."""
+from sqlalchemy import Column, Integer, String, TIMESTAMP, func
+from app.database import Base
+
+
+class AdminUser(Base):
+    __tablename__ = "admin_users"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    username = Column(String(64), unique=True, nullable=False)
+    password_hash = Column(String(255), nullable=False)
+    created_at = Column(TIMESTAMP, server_default=func.now())

backend/app/models/contact.py

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+"""Contact form submission model."""
+from sqlalchemy import Column, Integer, String, Text, Boolean, TIMESTAMP, func
+from app.database import Base
+
+
+class Contact(Base):
+    __tablename__ = "contacts"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(255), nullable=False)
+    email = Column(String(255), nullable=False)
+    phone = Column(String(64))
+    message = Column(Text, nullable=False)
+    privacy_consent = Column(Boolean, nullable=False)
+    email_sent = Column(Boolean, default=False)
+    created_at = Column(TIMESTAMP, server_default=func.now())

backend/app/models/equipment.py

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+"""Equipment cache model (imported from Rentman)."""
+from sqlalchemy import Column, Integer, String, Text, Boolean, DECIMAL, JSON, Index, TIMESTAMP, func
+from app.database import Base
+
+
+class EquipmentCache(Base):
+    __tablename__ = "equipment_cache"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    rentman_id = Column(String(64), unique=True, nullable=False)
+    name = Column(String(255), nullable=False)
+    number = Column(String(64))
+    category = Column(String(128))
+    subcategory = Column(String(128))
+    description = Column(Text)
+    specifications = Column(JSON)
+    images = Column(JSON)
+    rental_price = Column(DECIMAL(10, 2))
+    brand = Column(String(128))
+    available = Column(Boolean, default=True)
+    created_at = Column(TIMESTAMP, server_default=func.now())
+    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())
+
+    __table_args__ = (
+        Index("idx_equipment_category", "category"),
+        Index("idx_equipment_name", "name"),
+        Index("idx_equipment_number", "number"),
+    )

backend/app/models/rental_request.py

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+"""Rental request and rental request item models."""
+from sqlalchemy import Column, Integer, String, Text, Date, TIMESTAMP, ForeignKey, func, Index
+from sqlalchemy.orm import relationship
+from app.database import Base
+
+
+class RentalRequest(Base):
+    __tablename__ = "rental_requests"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    reference_number = Column(String(32), unique=True, nullable=False)
+    event_name = Column(String(255), nullable=False)
+    date_start = Column(Date, nullable=False)
+    date_end = Column(Date, nullable=False)
+    location = Column(String(255))
+    person_count = Column(Integer)
+    contact_name = Column(String(255), nullable=False)
+    contact_company = Column(String(255))
+    contact_email = Column(String(255), nullable=False)
+    contact_phone = Column(String(64))
+    contact_street = Column(String(255))
+    contact_postalcode = Column(String(16))
+    contact_city = Column(String(128))
+    message = Column(Text)
+    status = Column(String(32), default="pending")
+    rentman_request_id = Column(String(64))
+    rentman_sync_status = Column(String(32), default="pending")
+    rentman_sync_error = Column(Text)
+    created_at = Column(TIMESTAMP, server_default=func.now())
+
+    items = relationship("RentalRequestItem", back_populates="rental_request", cascade="all, delete-orphan")
+
+    __table_args__ = (Index("idx_rental_status", "status"),)
+
+
+class RentalRequestItem(Base):
+    __tablename__ = "rental_request_items"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    rental_request_id = Column(Integer, ForeignKey("rental_requests.id", ondelete="CASCADE"), nullable=False)
+    equipment_id = Column(Integer, ForeignKey("equipment_cache.id"))
+    equipment_name = Column(String(255))
+    rentman_equipment_id = Column(String(64))
+    quantity = Column(Integer, nullable=False, default=1)
+    unit_price = Column(String(20))
+    rentman_sync_status = Column(String(32), default="pending")
+
+    rental_request = relationship("RentalRequest", back_populates="items")
+
+    __table_args__ = (Index("idx_rental_items_request", "rental_request_id"),)

backend/app/models/sync_log.py

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+"""Sync log model for equipment import tracking."""
+from sqlalchemy import Column, Integer, String, Text, TIMESTAMP, func, Index
+from app.database import Base
+
+
+class SyncLog(Base):
+    __tablename__ = "sync_log"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    sync_type = Column(String(32), nullable=False, default="equipment")
+    status = Column(String(32), nullable=False)
+    items_processed = Column(Integer, default=0)
+    items_failed = Column(Integer, default=0)
+    error_message = Column(Text)
+    started_at = Column(TIMESTAMP, server_default=func.now())
+    completed_at = Column(TIMESTAMP)
+
+    __table_args__ = (Index("idx_sync_log_started", "started_at"),)