replace ambiguous salary issue with date format fix

990000 could be a real salary — not a clear typo.
Replaced with: date "11-03-2022" (MM-DD-YYYY) → "2022-11-03" (YYYY-MM-DD)
Fully deterministic format conversion.

128 tests passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

dataqa_env/server/gradio_ui.py

@@ -40,7 +40,7 @@ AGENT_TRAJECTORIES = {
                 "row:7,col:salary,issue:wrong_type",
                 "row:11,col:department,issue:format_violation",
                 "row:15,col:email,issue:inconsistent_value",
-                "row:18,col:salary,issue:out_of_range",
+                "row:12,col:start_date,issue:format_violation",
                 "row:21,col:employee_id,issue:duplicate_row",
             ],
             "fixes": [
@@ -49,7 +49,7 @@ AGENT_TRAJECTORIES = {
                 "row:7,col:salary,fix:75000",                       # "seventy-five thousand" → 75000
                 "row:11,col:department,fix:Engineering",             # "Engneering" → "Engineering"
                 "row:15,col:email,fix:oscar.rivera@company.com",    # from name Oscar Rivera
-                "row:18,col:salary,fix:99000",                      # 990000 → remove extra digit
+                "row:12,col:start_date,fix:2022-11-03",              # MM-DD-YYYY → YYYY-MM-DD
             ],
         },
     ],

dataqa_env/server/tasks.py

@@ -158,11 +158,11 @@ def create_task_easy(seed: int = 42) -> Task:
                                description="Email john.doe@company.com doesn't match name Oscar Rivera",
                                difficulty=1.5))
 
-    # Issue 6: Salary with extra digit — typo (deterministic fix: "950000" → "95000")
-    r = 17  # Rosa Diaz, original salary is 99000
-    data[r][4] = "990000"  # extra zero
-    issues.append(PlantedIssue(row=r + 1, col="salary", issue_type="out_of_range",
-                               description="Salary 990000 exceeds maximum 150000 — likely extra digit typo (should be 99000)",
+    # Issue 6: Date in wrong format (deterministic fix: "03-15-2022" → "2022-03-15")
+    r = 11  # Laura Adams, start_date should be 2022-11-03
+    data[r][5] = "11-03-2022"  # MM-DD-YYYY instead of YYYY-MM-DD
+    issues.append(PlantedIssue(row=r + 1, col="start_date", issue_type="format_violation",
+                               description="Start date '11-03-2022' is in MM-DD-YYYY format instead of required YYYY-MM-DD (should be 2022-11-03)",
                                difficulty=1.5))
 
     corrupted = _rows_to_csv([header] + data)

tests/test_environment.py

@@ -233,7 +233,7 @@ class TestGradeFixes:
             (7, "salary", "75000"),           # type conversion
             (11, "department", "Engineering"), # spelling fix
             (15, "email", "oscar.rivera@company.com"),  # pattern match
-            (18, "salary", "99000"),          # remove extra digit
+            (12, "start_date", "2022-11-03"),  # date format fix
         ]
         result = grade_fixes(fixes, easy_task)
         assert result["fix_score"] > 0.7