fix: 避免空 Description 模板触发误报冲突

backend/app/submission.py

@@ -72,8 +72,25 @@ def source(raw):
     }
 
 
+def comparable_description(text):
+    """Canonicalize empty platform placeholders only; preserve all substantive text.
+
+    This comparison key must never replace the reviewed text sent to the platform.
+    Unknown or partially filled templates remain exact to protect concurrent edits.
+    """
+    empty_template = r"\s*" + r"\s*".join(re.escape(heading.strip()) for heading in HEADINGS) + r"\s*"
+    return "" if not text.strip() or re.fullmatch(empty_template, text) else text
+
+
 def fingerprint(value):
-    return hashlib.sha256(json.dumps(value, sort_keys=True, ensure_ascii=False).encode()).hexdigest()
+    comparable = {
+        **value,
+        "sections": {
+            key: {**item, "description": comparable_description(item["description"])}
+            for key, item in value["sections"].items()
+        },
+    }
+    return hashlib.sha256(json.dumps(comparable, sort_keys=True, ensure_ascii=False).encode()).hexdigest()
 
 
 def parse_description(text):
@@ -300,7 +317,10 @@ async def run_check(runner, job_id, payload):
     patch = {}
     for section, item in current["sections"].items():
         before, target = expected["sections"][section], payload["descriptions"][section]
-        if item["code"] != before["code"] or item["description"] not in (before["description"], target):
+        if item["code"] != before["code"] or comparable_description(item["description"]) not in (
+            comparable_description(before["description"]),
+            comparable_description(target),
+        ):
             raise WqError("平台表达式或 Description 已变化，未覆盖；请刷新后重新核对", "conflict")
         if item["description"] != target:
             patch[section] = {"description": target}