Add Reflection model

src/dashboard/models/reflection.py

@@ -0,0 +1,14 @@
+
+from datetime import UTC, datetime
+from sqlalchemy import Column, DateTime, Integer, String, Text
+from .database import Base
+
+class Reflection(Base):
+    __tablename__ = "reflections"
+
+    id = Column(Integer, primary_key=True, index=True)
+    content = Column(Text, nullable=False)
+    sentiment = Column(String(50), nullable=True)
+    focus_area = Column(String(100), nullable=True)
+    
+    created_at = Column(DateTime, default=lambda: datetime.now(UTC), nullable=False)