Initial commit: KiraTV IPTV proxy server

Full-stack IPTV management system with Xtream Codes API compatibility,
multi-account provider fan-out, Jellyfin local library integration,
real-time dashboard, EPG support, and A/V-sync-safe stream recovery.

backend/models/custom_category.py

@@ -0,0 +1,29 @@
+from sqlalchemy import Column, Integer, String, Boolean, DateTime, Enum, ForeignKey, func
+from sqlalchemy.orm import relationship
+from ..database import Base
+from .channel import ContentType
+
+
+class CustomCategory(Base):
+    __tablename__ = "custom_categories"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(200), nullable=False)
+    type = Column(Enum(ContentType), nullable=False)
+    position = Column(Integer, default=0, nullable=False)
+    is_visible = Column(Boolean, default=True, nullable=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    items = relationship("CustomCategoryItem", back_populates="category", cascade="all, delete-orphan")
+
+
+class CustomCategoryItem(Base):
+    __tablename__ = "custom_category_items"
+
+    id = Column(Integer, primary_key=True, index=True)
+    custom_category_id = Column(Integer, ForeignKey("custom_categories.id"), nullable=False)
+    channel_id = Column(Integer, ForeignKey("channels.id"), nullable=False)
+    position = Column(Integer, default=0, nullable=False)
+
+    category = relationship("CustomCategory", back_populates="items")
+    channel = relationship("Channel")