Reject contradictory submission identities and correct snapshot fixtures

README.md

@@ -182,7 +182,7 @@ python3 -B collect_openreview_snapshot.py \
   --out /data/paper-index/collected --year 2024 --year 2025 --year 2026
 ```
 
-解析器先核验固定 SHA-256，再流式读取 tar，以临时 SQLite 按年份和 forum 关联投稿及决定，兼容回复先于投稿的归档顺序。只接受明确对 everyone 公开的投稿和具有会议主席签名的 Decision；保留原始决定值、note ID、决定日期、invitation 和签名证据。无明确决定的投稿保留 unknown，不产生拒稿推断。无法关联到公开投稿元数据的公开决定另存 unmatched-decisions 文件，供复核，不擅自创建论文。输出清单分别统计投稿状态、决定事件、缺失摘要和排除原因；重复副本去重，内容冲突会中止。
+解析器先核验固定 SHA-256，再流式读取 tar，以临时 SQLite 按年份和 forum 关联投稿及决定，兼容回复先于投稿的归档顺序。只接受明确对 everyone 公开的投稿和具有会议主席签名的 Decision；保留原始决定值、note ID、决定日期、invitation 和签名证据。无明确决定的投稿保留 unknown，不产生拒稿推断。无法关联到公开投稿元数据的公开决定另存 unmatched-decisions 文件，供复核，不擅自创建论文。输出清单分别统计投稿状态、决定事件、缺失摘要和排除原因；重复副本去重，内容冲突会中止。导入时若同一编号指向不同 forum，或同一 forum 指向不同投稿编号，会报冲突并回滚，不强制合并。
 
 该版本是 2026-05-08 发布的第三方历史副本，不代表平台当前状态或全部投稿；缺失决定及公开性筛选均需核验。采集成功也不等于主库已更新，后续应通过单写入协调器导入，并核对同届官方程序与公开决定的差异。
 

submission_evidence.py

@@ -80,6 +80,11 @@ def attach_submission(store,edition,paper,record,external_id,identities):
     for scheme,value in identities:
         found=c.execute('SELECT submission_id FROM submission_identifiers WHERE edition_id=? AND scheme=? AND value=?',(edition,scheme,value)).fetchone()
         if found:matches.add(found[0])
+    for scheme in ('openreview','iclr_number'):
+        values={value for kind,value in identities if kind==scheme}
+        for sid in matches:
+            values.update(value for value, in c.execute('SELECT value FROM submission_identifiers WHERE submission_id=? AND scheme=?',(sid,scheme)))
+        if len(values)>1:raise ValueError('Conflicting authoritative submission identities: '+scheme)
     if matches:
         papers={paper}|{c.execute('SELECT paper_id FROM submissions WHERE id=?',(sid,)).fetchone()[0] for sid in matches}
         surviving=min(papers)

test_openreview_snapshot.py

@@ -20,7 +20,8 @@ class SnapshotTests(unittest.TestCase):
         content={'title':'A public paper','abstract':'A public abstract','authors':['Jane Doe'],
                  'authorids':['private@example.org'],'keywords':['learning']}
         if v2:content={key:{'value':value} for key,value in content.items()}
-        return {'id':forum,'forum':forum,'number':42,'readers':['everyone'],'cdate':1760000000000,
+        number=int(forum[-1]) if forum[-1].isdigit() else 42
+        return {'id':forum,'forum':forum,'number':number,'readers':['everyone'],'cdate':1760000000000,
                 'invitations':['ICLR.cc/2026/Conference/-/Submission'],'content':content}
 
     def decision(self,forum='paper1',identifier='decision1',value='Reject'):

test_submission_evidence.py

@@ -55,6 +55,16 @@ class SubmissionTests(unittest.TestCase):
         self.decision(paper,two,'forum2',[('openreview','forum2'),('iclr_number','2')])
         self.assertEqual(self.store.conn.execute('SELECT count(*) FROM submissions').fetchone()[0],2)
 
+    def test_conflicting_forums_cannot_be_bridged_by_one_submission_number(self):
+        paper,one=self.record('snapshot','realForum',['Jane Doe'])
+        other,two=self.record('snapshot','differentForum',['Other Author'])
+        self.decision(paper,one,'realForum',[('openreview','realForum'),('iclr_number','42')])
+        with self.assertRaisesRegex(ValueError,'Conflicting authoritative submission identities'):
+            self.decision(other,two,'differentForum',[('openreview','differentForum'),('iclr_number','42')])
+        self.assertEqual(self.store.conn.execute('SELECT count(*) FROM papers').fetchone()[0],2)
+        self.assertEqual(self.store.conn.execute('SELECT count(*) FROM submissions').fetchone()[0],1)
+        self.assertEqual(self.store.conn.execute('SELECT count(*) FROM submission_merges').fetchone()[0],0)
+
     def test_late_identity_bridge_preserves_decisions_and_does_not_reuse_merged_ids(self):
         first,one=self.record('iclr_program','number-42',['Jane Doe','John Smith'])
         second,two=self.record('openreview_snapshot','realForum',['Anonymous'])