Add v0.2 pillars: chaos inbox, identity center, command palette

backend/app/models/notification.py

@@ -0,0 +1,23 @@
+"""Notification model for OS-level alerts"""
+from sqlalchemy import Column, Integer, String, DateTime, ForeignKey
+from sqlalchemy.sql import func
+from app.database import Base
+
+
+class Notification(Base):
+    """Stores notifications across apps"""
+
+    __tablename__ = "notifications"
+
+    id = Column(Integer, primary_key=True, index=True)
+    type = Column(String(50), default="info")
+    source_app_id = Column(String(100))
+    title = Column(String(255))
+    body = Column(String(1000))
+    importance = Column(String(50), default="normal")
+    delivery_mode = Column(String(50), default="immediate")
+    read_at = Column(DateTime(timezone=True))
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    def __repr__(self):
+        return f"<Notification {self.id}:{self.title}>"