refactor: convert last hardcoded SQL hint to _build_sql() for full consistency

Agent/agentic_workflow.py

@@ -3127,12 +3127,11 @@ def query_craft(question: str) -> str:
                             _specific_dept_name = _rd  # Use exact DB casing
                             break
                 if _specific_dept_name:
-                    _specific_hint = (
-                        f"SELECT COUNT(DISTINCT de.emp_no) AS employee_count\n"
-                        f"FROM dept_emp de\n"
-                        f"JOIN department d ON de.dept_no = d.dept_no\n"
-                        f"WHERE d.dept_name = '{_specific_dept_name}'\n"
-                        f"AND de.to_date IS NULL;"
+                    _specific_hint = _build_sql(
+                        select_cols=["COUNT(DISTINCT de.emp_no) AS employee_count"],
+                        base_table="dept_emp de",
+                        joins=["JOIN department d ON de.dept_no = d.dept_no"],
+                        where=[f"d.dept_name = '{_specific_dept_name}'", "de.to_date IS NULL"]
                     )
                     print(f"[MICRO-HINT] Injecting specific-department employee count hint for: {_specific_dept_name}")
                     question = f"{question}\n\n# HINT: The following SQL may help, but do not copy blindly.\n{_specific_hint}"