feat(tests): add review assignment columns to Test model

backend/app/models/test.py

@@ -139,6 +139,18 @@ class Test(Base):
     red_tech_assignee = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
     blue_tech_assignee = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
 
+    # ── Review assignment fields ────────────────────────────────────
+    red_reviewer_assignee = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
+    red_review_by = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
+    red_review_at = Column(DateTime, nullable=True)
+    red_review_notes = Column(Text, nullable=True)
+
+    blue_reviewer_assignee = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
+    blue_review_by = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
+    blue_review_at = Column(DateTime, nullable=True)
+    blue_review_notes = Column(Text, nullable=True)
+    system_gaps = Column(Text, nullable=True)
+
     # ── On-hold fields ─────────────────────────────────────────────
     is_on_hold = Column(Boolean, default=False, nullable=False, server_default="false")
     hold_reason = Column(Text, nullable=True)
@@ -147,6 +159,11 @@ class Test(Base):
     red_tech_assigned_user = relationship("User", foreign_keys=[red_tech_assignee])
     blue_tech_assigned_user = relationship("User", foreign_keys=[blue_tech_assignee])
 
+    red_reviewer = relationship("User", foreign_keys=[red_reviewer_assignee])
+    red_review_actor = relationship("User", foreign_keys=[red_review_by])
+    blue_reviewer = relationship("User", foreign_keys=[blue_reviewer_assignee])
+    blue_review_actor = relationship("User", foreign_keys=[blue_review_by])
+
     # Assign original_test = relationship("Test", remote_side="Test.id", foreign_keys=[retest_of])
     original_test = relationship("Test", remote_side="Test.id", foreign_keys=[retest_of])
     # Assign retests = relationship("Test", foreign_keys=[retest_of], back_populates="orig...