fix(tests): keep free-text round fields in place on reopen, only blank verdicts

Only the per-round verdict/timing fields (attack_success, execution
start/end for red; detection_result, containment_result, detection/
containment time for blue) get cleared on reopen — the operator must
answer those fresh for each round, and the prior round's answer stays
visible via round_history + the archived Phase Timeline card. Free-text
fields (procedure_text, tool_used, red_summary, blue_summary) are no
longer cleared: the operator edits them in place for the new round
instead of retyping everything from scratch.

backend/app/services/test_workflow_service.py

@@ -405,12 +405,14 @@ def reopen_red_review(db: Session, test: Test, user: User, notes: str) -> Test:
     test.red_review_at = datetime.utcnow()
     test.red_review_notes = notes.strip()
     test.red_round_number = (test.red_round_number or 1) + 1
-    # New sheet — the operator fills these in fresh for this round; the
-    # values that were just archived stay visible via round_history.
-    test.procedure_text = None
-    test.tool_used = None
+    # Only the per-round verdict/timing fields get a blank slate — the
+    # operator must explicitly answer "was THIS attempt successful" and
+    # "when did THIS attempt run" rather than silently inheriting round 1's
+    # answer. The old values aren't lost: they're in round_history and
+    # shown on the archived Phase Timeline card. Free-text fields
+    # (procedure, tool, summary) are NOT cleared — the operator edits them
+    # in place for the new round instead of retyping from scratch.
     test.attack_success = None
-    test.red_summary = None
     test.execution_start_time = None
     test.execution_end_time = None
     db.flush()
@@ -640,13 +642,14 @@ def reopen_blue_review(db: Session, test: Test, user: User, notes: str) -> Test:
     test.blue_review_at = datetime.utcnow()
     test.blue_review_notes = notes.strip()
     test.blue_round_number = (test.blue_round_number or 1) + 1
-    # New sheet for this round; the archived values above remain visible
-    # via round_history.
+    # Same split as the red side: verdict/timing fields get a blank slate
+    # for this round (old values live on in round_history + the archived
+    # Phase Timeline card), but blue_summary is free text the operator
+    # edits in place rather than retyping.
     test.detection_result = None
     test.containment_result = None
     test.detection_time = None
     test.containment_time = None
-    test.blue_summary = None
     db.flush()
 
     log_action(