Handle standalone italic author blocks in the historical archive

Reviewed-on: #39

.gitea/workflows/check.yml

@@ -49,6 +49,8 @@ jobs:
               subprocess.run([str(venv/'bin/paper-atlas'),'--help'],cwd=outside,check=True)
               subprocess.run([python,'-I','-B','-m','paper_atlas','collect','cvf','--help'],cwd=outside,check=True)
               subprocess.run([python,'-I','-B','-m','paper_atlas','collect','www-archive','--help'],cwd=outside,check=True)
+              subprocess.run([python,'-I','-B','-m','paper_atlas','collect','aamas-proceedings','--help'],cwd=outside,check=True)
+              subprocess.run([python,'-I','-B','-m','paper_atlas','collect','iclr-archive','--help'],cwd=outside,check=True)
               subprocess.run([python,'-I','-B','-m','paper_atlas','maintain','postgres','--help'],cwd=outside,check=True)
               subprocess.run([python,'-I','-B','-m','paper_atlas','maintain','edition-tracks','--help'],cwd=outside,check=True)
               subprocess.run([python,'-I','-B','-m','paper_atlas','maintain','joint-editions','--help'],cwd=outside,check=True)

README.md

@@ -6,6 +6,8 @@ Paper Atlas 将 arXiv、AI 会议论文集及公开投稿决定整理到可追
 
 项目仍在建设中。候选范围包含 43 个会议（含 ACM MM、MLSys），尚未完成全部历史数据和最终去重复核。实际进度以数据库、来源清单和覆盖报告为准，而不是仓库文件数量。
 
+历史 ICLR 2014–2016 官方录用页由 `collect iclr-archive` 适配，保留主会/workshop及重复展示证据；运行和身份核验边界见 [历史档案说明](docs/coverage/iclr-archive-2014-2016.md)。
+
 ## 项目结构
 
 ```text
@@ -62,6 +64,8 @@ paper-atlas collect colm --cache /data/paper-index/raw/http-cache \
 
 早期主系列的Workshop名称按[ICML/IROS精确届次证据](docs/coverage/historical-primary-series-2026-11-09.md)识别，保留原名与范围证据；代码支持不代表已补齐生产数据。
 
+AAMAS 的[官方论文集采集器](docs/aamas-proceedings.md)目前核验了 2012 版式，可从缓存或已校验快照采集标题、作者及页面提供的摘要；发表形式单独保存，全文/扩展摘要中未明确的投稿 track 保持待明确，不根据会话主题推定主会轨道。
+
 `paper-atlas collect --help` 查看来源；`paper-atlas import --help` 查看导入方式。完整批次步骤见[使用指南](docs/usage.md)。
 
 共享实例名为 `foundry-postgres`，数据位于 `foundry_data` 库的 `research` schema；其他项目可按权限复用同一组表。库名通过 libpq service 配置、schema 通过 search_path 或 `--pg-schema` 指定，不写死在查询中。PostgreSQL 凭据放在服务器权限为 `0600` 的 libpq service 文件中；命令行只使用服务名称。`paper-atlas maintain postgres --help` 提供迁移入口：先完整核验 21 张业务表，再发布目标 schema。SQLite FTS5 内部表由 PostgreSQL GIN 索引替代。切换后 SQLite 为只读备份；`import records`、`import arxiv` 和 `maintain backfill` 使用 `--pg-service foundry-research` 写入主库，整个写入会话只允许一个协调写入者，会议文件失败时整体回滚并保留失败批次记录。

docs/aamas-proceedings.md

@@ -0,0 +1,43 @@
+# AAMAS 官方论文集元数据
+
+`paper_atlas.collectors.aamas` 是按需运行的采集适配器，通过统一入口 `collect aamas-proceedings` 使用。目前只支持已独立核验的 **AAMAS 2012** HTML 版式；其他年份需先核对官方目录和逐篇结构，再增加适配，不能仅替换年份。
+
+## 来源与范围
+
+[官方论文集介绍](https://www.ifaamas.org/Proceedings/aamas2012/)及其 Full Papers、Extended Abstracts、Demos、Doctorial Consortium Abstracts 四个栏目分别列出 136、146、28、24 条，共 334 条。旧 DBLP 候选卷的 310 条不能替代这四类官方目录，也不能全部标记为主会全文。栏目数量来自 2026-11-09 冻结的原始页面；页面结构或数量发生变化时，采集器停止，留待重新核验。
+
+采集标题、逐篇作者、页面实际提供的摘要、官方条目 ID、目录锚点和 PDF 地址。**只保存 PDF 链接，不下载 PDF。** 全文页面的摘要藏在标题链接内部的 `abstract` 元素，作者链接里的 “has N papers” 是界面徽标，二者不会混入标题或姓名。未提供的摘要保存为 `null`，不会用标题、说明文字或其他论文填充。
+
+官方介绍说明了 general、robotics、virtual agents、innovative applications 等投稿轨道，但逐篇目录的主题会话不能独立证明某篇论文的投稿轨道。因此全文和扩展摘要均使用 `proceedings_unspecified`；演示、博士栏目使用 `demo`、`doctoral`。发表形式保留在 `metadata.publication_format` 和 `aamas_proceedings:publication_format` 标签中，会话原文单独保存。它们不是研究类型标注，也不会写入自定义 annotation。
+
+目录条目仅提供发表录用证据，不是原始决定信。`observed_at` 是页面采集时间，不能当作 2012 年的决定日期；官方介绍中的投稿、撤稿、录用汇总数不能识别逐篇拒稿或撤稿，采集器不会由总量相减生成这些决定。
+
+## 运行
+
+在已确认的远程运行环境中，使用 HTTP 缓存采集：
+
+```sh
+paper-atlas collect aamas-proceedings --year 2012 \
+  --cache /data/paper-index/cache/aamas \
+  --out /data/paper-index/collected/aamas-2012
+```
+
+也可使用已冻结的官方页面：
+
+```sh
+paper-atlas collect aamas-proceedings --year 2012 \
+  --snapshots /data/paper-index/collected/historical-next-source-evidence-v1 \
+  --out /data/paper-index/collected/aamas-2012
+```
+
+快照目录需含 `receipts.json`，其中每个响应包含原始 `url`、HTTP `status`、相对 `file`、`bytes`、`sha256` 和 `finished_at`。要求五个准确官方 URL 均唯一匹配且返回 200；验证全部字节数和哈希后才解析，不接受目录穿越或绝对文件路径。快照中其他来源的响应不会被当成 AAMAS 页面。
+
+输出为按数据库 track 分组的三个 JSONL 文件和对应 manifest、五份原始 HTML 证据，以及最后写出的 `aamas-proceedings-2012.json` 采集报告。锁文件避免同一输出目录并发运行。manifest 始终为 `partial`，记录发表形式数量和缺失摘要数；**采集命令不连接数据库，也不导入。**
+
+## 复核与恢复
+
+每条记录携带对应官方页面的 URL、采集时间、字节数、SHA-256 与输出内证据路径。重新运行前先检查已有采集报告和文件哈希；采集中断不等于主库已导入，报告缺失或哈希不一致的目录不能直接作为导入队列。输出中的原始证据应随文件一起保存。
+
+生产导入前仍需单独与主库核验稳定标识、标题、作者及已有投稿，按证据补充 DOI/arXiv 等标识；目录页上的作者计数徽标和会话 ID 不能作为这些标识。需要另建经过核验的增量清单、保护旧历史，完成独立验收后才能计入覆盖。跨来源同一论文不得仅因同题就新增或合并投稿。
+
+本功能的代码、测试或采集成功均不代表 AAMAS 2012 已导入生产，也不证明拒稿全集完整。全库最终去重、摘要和来源覆盖验收属于独立后续阶段。

docs/coverage/iclr-archive-2014-2016.md

@@ -0,0 +1,44 @@
+# ICLR 2014–2016 官方历史录用档案
+
+此适配器是长期维护工具的一部分，按需运行。只识别已经独立核对的三种页面布局；后续页面发生变化必须重新核查，不能放松计数或轨道边界以使采集成功。
+
+| 官方页面 | 页面链接次数 | 整理后的不同记录 |
+|---|---:|---:|
+| [2014 Conference Proceedings](https://iclr.cc/archive/2014/conference-proceedings/) | 35 | main 35 |
+| [2015 accepted-main](https://iclr.cc/archive/www/doku.php%3Fid=iclr2015:accepted-main.html) | 116 | main 31、workshop 74 |
+| [2016 accepted-main](https://iclr.cc/archive/www/doku.php%3Fid=iclr2016:accepted-main.html) | 80 | main 80 |
+
+2015 的 11 篇 oral 全部再次出现在 poster 段落中。相同年份、轨道及 arXiv 标识的重复展示只生成一条来源记录，但每次展示的标题、作者显示字符串、链接、版本和段落均保留在 `source_variants`。两处标题或解析作者冲突时停止采集、等待人工核查。不同年份或不同轨道不合并投稿。
+
+2014 的作者以分号列出，一条有末尾分号，一条标题和作者斜体块不在普通段落中，部分作者段落拆成多个格式片段；必须读取完整作者段落或独立斜体块，不能只读首个格式片段。2016 的代码链接不属于作者。保留原文，解析结果不替代来源证据。oral、poster 作为 `iclr_archive:presentation` 标签，不改成独立投稿轨道。arXiv 版本留在来源变体中，稳定标识使用去版本号的编号。
+
+## 来源快照与运行
+
+2026-11-09 已冻结的官方响应 SHA256：
+
+- 2014：`a33858176fbffae0066ed3c10310f7dd98a66d12a36334b6339ef1f915ef07af`
+- 2015：`131491663742cb084662a4804009b8318e0fa7bc184d4a9044d16dd28f05b888`
+- 2016：`7320b8652431793b6ea0743f871ee446bf08b6361ccd4e421b6b53449e71f4f6`
+
+在服务器运行，输出新目录，不下载论文 PDF：
+
+```sh
+paper-atlas collect iclr-archive --year 2015 \
+  --snapshots /data/paper-index/collected/historical-next-source-evidence-v1 \
+  --out /data/paper-index/collected/iclr-archive-source-v1/2015
+
+# 或重新下载官方 HTML，并保留 HTTP 缓存与收据
+paper-atlas collect iclr-archive --year 2016 \
+  --cache /data/paper-index/cache/iclr-archive \
+  --out /data/paper-index/collected/iclr-archive-source-v1/2016
+```
+
+冻结输入目录必须包含 `receipts.json`，每项有精确 `url`、HTTP `status: 200`、相对 `file`、`bytes`、`sha256` 和带时区的 `finished_at`。读取时重新核对尺寸、哈希和路径；拒绝越界及指向目录外的软链接。已完成输出不可覆盖，应检查报告后另建明确版本目录。解析或计数失败时不生成完成报告，也不导入数据库。
+
+输出分轨道 JSONL、manifest、原始 HTML 证据和年度采集报告。仅支持这三年已审查的页面。2014 workshop、其他未列轨道、逐篇摘要及公开拒稿范围尚未通过这些页面核验，不能据此声称完整。缺席不代表 rejected、withdrawn 或从未被录用。
+
+## 导入前后的边界
+
+这三页合计 220 条不同来源记录，不等于新增 220 篇论文；同一工作可能已存在于 arXiv 或其他会议。先核验来源字段与原始页面，再执行 PostgreSQL 只读预检，比较稳定标识、标题、作者和原始来源。标题/作者差异、版本关联及冲突必须保留证据并明确评估；不能仅靠标题猜测身份，也不能覆盖原有摘要。
+
+采集器不连接数据库。正式导入使用既有 `import records`，必须有新的生产保护基线和独立验收；全部导入结束后仍需全库去重和历史覆盖审计。来自官方录用清单的 accepted 是清单观察，不是原始审稿决定签名或决定日期。

paper_atlas/cli.py

@@ -13,6 +13,7 @@ COMMANDS = {
     ('download',): ('paper_atlas.io.snapshots', {}, '下载并校验固定版本快照'),
     ('collect','pmlr'): ('paper_atlas.collectors.pmlr', {}, 'PMLR 官方元数据'),
     ('collect','acl'): ('paper_atlas.collectors.acl', {}, 'ACL Anthology XML'),
+    ('collect','iclr-archive'): ('paper_atlas.collectors.iclr_archive', {}, '核对ICLR 2014–2016官方历史录用档案'),
     ('collect','iclr-program'): ('paper_atlas.collectors.iclr', {}, 'ICLR 官方公开程序'),
     ('collect','iclr-snapshot'): ('paper_atlas.collectors.openreview', {}, 'ICLR 公开投稿与决定快照'),
     ('collect','public-openreview'): ('paper_atlas.collectors.public_openreview', {}, '核验其他会议的公开拒稿及撤稿标签'),
@@ -23,6 +24,7 @@ COMMANDS = {
     ('collect','mlsys'): ('paper_atlas.collectors.proceedings', {'source':'mlsys'}, 'MLSys 官方历年标题与摘要'),
     ('collect','cvf'): ('paper_atlas.collectors.vision', {'source':'cvf'}, 'CVPR / ICCV 官方开放目录'),
     ('collect','ecva'): ('paper_atlas.collectors.vision', {'source':'ecva'}, 'ECCV 官方开放目录'),
+    ('collect','aamas-proceedings'): ('paper_atlas.collectors.aamas', {}, '按官方目录区分 AAMAS 发表形式和摘要'),
     ('collect','www-archive'): ('paper_atlas.collectors.www_archive', {}, '核验早期WWW官方档案并分开待核查条目'),
     ('collect','dblp'): ('paper_atlas.collectors.dblp_records', {}, '核对并整理 DBLP 历史发表记录'),
     ('catalogue','dblp'): ('paper_atlas.collectors.dblp', {}, '盘点 DBLP 历史会议目录'),

paper_atlas/collectors/aamas.py

@@ -0,0 +1,210 @@
+"""Official AAMAS proceedings metadata, with publication format separate from track."""
+import argparse
+from collections import Counter, defaultdict
+import fcntl
+import hashlib
+import json
+from pathlib import Path
+import re
+import tempfile
+from urllib.parse import urljoin, urlsplit
+
+from paper_atlas.db.submissions import timestamp
+from paper_atlas.io.html import Document, Node, clean
+from paper_atlas.io.http import fetch
+
+SOURCE = 'aamas_proceedings'
+ROOT = 'https://www.ifaamas.org/Proceedings/aamas2012/'
+# Counts independently checked against the frozen publisher sections. This
+# adapter deliberately refuses other editions/layouts until they are reviewed.
+SECTIONS = {
+    'fullpapers': ('Full Papers', 'full_paper', 'proceedings_unspecified', 136),
+    'extabstracts': ('Extended Abstracts', 'extended_abstract', 'proceedings_unspecified', 146),
+    'demos': ('Demos', 'demo', 'demo', 28),
+    'doctorals': ('Doctorial Consortium Abstracts', 'doctoral_abstract', 'doctoral', 24),
+}
+
+
+def classes(node):
+    return set(node.attrs.get('class', '').split())
+
+
+def text_without(node, omitted):
+    if node.tag in ('script', 'style') or classes(node) & omitted:
+        return ''
+    parts = [text_without(child, omitted) if isinstance(child, Node) else child
+             for child in node.children]
+    value = ''.join(parts)
+    return ' '+value+' ' if node.tag in ('p', 'div', 'section', 'li', 'br') else value
+
+
+def one(nodes, description):
+    if len(nodes) != 1:
+        raise ValueError('Expected one '+description)
+    return nodes[0]
+
+
+def parse_section(html, section, observed_at, evidence):
+    heading, publication_format, track, _ = SECTIONS[section]
+    document = Document(html)
+    titles = [clean(n.text()) for n in document.root.walk() if n.tag == 'title']
+    if titles != [heading+' - AAMAS 2012']:
+        raise ValueError('Unexpected proceedings edition or section title')
+    headings = [clean(n.text()) for n in document.root.walk() if n.tag == 'h1']
+    if headings != [heading]:
+        raise ValueError('Unexpected proceedings section heading')
+    url = ROOT+'resources/'+section+'.html'
+    records = []
+    seen = set()
+    session = None
+    for node in document.root.walk():
+        if node.tag == 'h2' and 'section' in classes(node):
+            session = {'id': node.attrs.get('id'), 'title': clean(node.text())}
+        if node.tag != 'div' or 'paper' not in classes(node):
+            continue
+        paper_id = node.attrs.get('id', '')
+        if not re.fullmatch(r'[A-Za-z0-9]+_[0-9]+', paper_id) or paper_id in seen:
+            raise ValueError('Missing or repeated publisher paper ID')
+        seen.add(paper_id)
+        title_node = one([n for n in node.walk() if n.tag == 'span' and 'title' in classes(n)], 'paper title')
+        link = one([n for n in title_node.children if isinstance(n, Node) and n.tag == 'a'], 'paper link')
+        paper_url = urljoin(url, link.attrs.get('href', ''))
+        if paper_url != ROOT+'papers/'+paper_id+'.pdf':
+            raise ValueError('Paper link differs from publisher ID or official host')
+        title = clean(text_without(link, {'abstract'}))
+        abstract_nodes = [n for n in link.walk() if n.tag == 'span' and 'abstract' in classes(n)]
+        if len(abstract_nodes) > 1:
+            raise ValueError('Multiple abstracts for one paper')
+        abstract = (clean(abstract_nodes[0].text()) or None) if abstract_nodes else None
+        author_node = one([n for n in node.walk() if n.tag == 'span' and 'authors' in classes(n)], 'author list')
+        author_display = clean(text_without(author_node, {'amount'}))
+        authors = [clean(name) for name in author_display.split(',')]
+        if not title or not author_display or any(not name for name in authors):
+            raise ValueError('Empty paper title or author')
+        tags = [{'namespace': 'aamas_proceedings:publication_format', 'value': publication_format}]
+        if session:
+            tags.append({'namespace': 'aamas_proceedings:session', 'value': session['title']})
+        records.append({
+            'source': SOURCE, 'external_id': '2012/'+paper_id,
+            'url': url+'#'+paper_id, 'title': title, 'abstract': abstract,
+            'authors': authors, 'identifiers': {}, 'venue': 'AAMAS', 'venue_aliases': [],
+            'year': 2012, 'track': track, 'status': 'accepted',
+            'observed_at': observed_at,
+            'raw_decision': 'listed in official AAMAS 2012 proceedings '+heading,
+            'metadata': {'publisher_paper_id': paper_id, 'paper_url': paper_url,
+                         'section_url': url, 'section_heading': heading,
+                         'publication_format': publication_format, 'session': session,
+                         'authors_display': author_display, 'source_evidence': evidence,
+                         'publication_evidence': 'official published proceedings entry; not an original decision note',
+                         'track_scope_note': ('Full papers and extended abstracts include general and special submission tracks; '
+                                              'session topics do not establish an individual submission track.'
+                                              if track == 'proceedings_unspecified' else 'Explicit publisher section.'),
+                         'decision_date_precision': 'not_supplied'},
+            'tags': tags})
+    if not records:
+        raise ValueError('No publisher paper entries found')
+    return records
+
+
+def read_pages(cache=None, snapshots=None):
+    if bool(cache) == bool(snapshots):
+        raise ValueError('Choose exactly one HTTP cache or frozen snapshot directory')
+    urls = {'introduction': ROOT, **{key: ROOT+'resources/'+key+'.html' for key in SECTIONS}}
+    pages = {}
+    receipts = []
+    frozen = json.loads((Path(snapshots)/'receipts.json').read_text())['receipts'] if snapshots else []
+    for key, url in urls.items():
+        if snapshots:
+            receipt = one([r for r in frozen if r['url'] == url], 'frozen response receipt')
+            filename = Path(receipt['file'])
+            if filename.is_absolute() or '..' in filename.parts or receipt.get('status') != 200:
+                raise ValueError('Unsafe or unsuccessful frozen response')
+            data = (Path(snapshots)/filename).read_bytes()
+            if len(data) > 8*1024**2 or hashlib.sha256(data).hexdigest() != receipt['sha256'] or len(data) != receipt['bytes']:
+                raise ValueError('Frozen publisher response checksum or size mismatch')
+            observed = receipt['finished_at']
+        else:
+            data = fetch(url, cache, 8*1024**2, delay=1)
+            receipt = json.loads((Path(cache)/hashlib.sha256(url.encode()).hexdigest()).with_suffix('.json').read_text())
+            observed = receipt['retrieved_at']
+        evidence = {'url': url, 'sha256': hashlib.sha256(data).hexdigest(), 'bytes': len(data),
+                    'file': 'evidence/'+hashlib.sha256(data).hexdigest()+'.html', 'observed_at': observed,
+                    'http_status': 200, 'response_receipt': receipt}
+        pages[key] = (data, evidence)
+        receipts.append(evidence)
+    return pages, receipts
+
+
+def _collect(year, out, *, cache=None, snapshots=None):
+    if year != 2012:
+        raise ValueError('Only the independently reviewed AAMAS 2012 layout is supported')
+    pages, receipts = read_pages(cache, snapshots)
+    intro = Document(pages['introduction'][0].decode('utf-8'))
+    if [clean(n.text()) for n in intro.root.walk() if n.tag == 'title'] != ['AAMAS 2012']:
+        raise ValueError('Unexpected proceedings introduction')
+    records = []
+    for section, (_, _, _, expected) in SECTIONS.items():
+        data, evidence = pages[section]
+        group = parse_section(data.decode('utf-8'), section, evidence['observed_at'], evidence)
+        if len(group) != expected:
+            raise ValueError('Publisher section count differs from reviewed inventory: '+section)
+        records.extend(group)
+    if len({r['external_id'] for r in records}) != len(records):
+        raise ValueError('Paper IDs collide across publisher sections')
+    grouped = defaultdict(list)
+    for record in records:
+        grouped[record['track']].append(record)
+    out = Path(out)
+    out.mkdir(parents=True, exist_ok=True)
+    files = []
+    with tempfile.TemporaryDirectory(prefix='.aamas-', dir=out) as temporary:
+        stage = Path(temporary)
+        (stage/'evidence').mkdir()
+        for data, evidence in pages.values():
+            (stage/evidence['file']).write_bytes(data)
+        for track, group in sorted(grouped.items()):
+            path = stage/f'aamas-proceedings-2012-{track}.jsonl'
+            path.write_text(''.join(json.dumps(r, ensure_ascii=False)+'\n' for r in group))
+            manifest = {'source': SOURCE, 'parser_version': 1, 'venue': 'AAMAS', 'year': 2012, 'track': track,
+                        'count': len(group), 'file': str(out/path.name), 'file_sha256': hashlib.sha256(path.read_bytes()).hexdigest(),
+                        'list_url': ROOT, 'status': 'partial', 'missing_abstract_count': sum(not r['abstract'] for r in group),
+                        'publication_format_counts': dict(Counter(r['metadata']['publication_format'] for r in group)),
+                        'note': 'Publisher sections verified; individual full/extended submission track, decision history and independent identities still need review.'}
+            path.with_suffix('.manifest.json').write_text(json.dumps(manifest, ensure_ascii=False, indent=2)+'\n')
+            files.append(manifest)
+        result = {'source': SOURCE, 'year': year, 'finished_at': timestamp(), 'status': 'collected_pending_identity_review',
+                  'records': len(records), 'files': files, 'source_receipts': receipts,
+                  'publication_format_counts': dict(Counter(r['metadata']['publication_format'] for r in records)),
+                  'database_written': False, 'pdfs_downloaded': False,
+                  'note': 'Aggregate submission/withdrawal totals do not identify individual rejected or withdrawn papers.'}
+        (stage/'aamas-proceedings-2012.json').write_text(json.dumps(result, ensure_ascii=False, indent=2)+'\n')
+        # Validated files first; write the completed collection report last.
+        (out/'evidence').mkdir(exist_ok=True)
+        for path in (stage/'evidence').iterdir():
+            path.replace(out/'evidence'/path.name)
+        for path in stage.iterdir():
+            if path.is_file() and path.name != 'aamas-proceedings-2012.json':
+                path.replace(out/path.name)
+        (stage/'aamas-proceedings-2012.json').replace(out/'aamas-proceedings-2012.json')
+    return result
+
+
+def collect(year, out, *, cache=None, snapshots=None):
+    if year != 2012:
+        raise ValueError('Only the independently reviewed AAMAS 2012 layout is supported')
+    out = Path(out)
+    out.mkdir(parents=True, exist_ok=True)
+    with (out/'aamas.collect.lock').open('a') as lock:
+        fcntl.flock(lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
+        return _collect(year, out, cache=cache, snapshots=snapshots)
+
+
+def main(argv=None, *, prog=None):
+    parser = argparse.ArgumentParser(prog=prog)
+    parser.add_argument('--year', type=int, choices=[2012], required=True)
+    parser.add_argument('--out', required=True)
+    source = parser.add_mutually_exclusive_group(required=True)
+    source.add_argument('--cache')
+    source.add_argument('--snapshots')
+    args = parser.parse_args(argv)
+    print(json.dumps(collect(args.year, args.out, cache=args.cache, snapshots=args.snapshots), ensure_ascii=False))

paper_atlas/collectors/iclr_archive.py

@@ -0,0 +1,225 @@
+"""Frozen official ICLR 2014–2016 lists; presentation evidence is not a track."""
+import argparse
+from collections import Counter, defaultdict
+import fcntl
+import hashlib
+import json
+from pathlib import Path
+import re
+import tempfile
+from urllib.parse import urlsplit
+
+from paper_atlas.db.submissions import timestamp
+from paper_atlas.io.html import Document, Node, clean
+from paper_atlas.io.http import fetch
+
+SOURCE = 'iclr_archive'
+PAGES = {
+    2014: ('https://iclr.cc/archive/2014/conference-proceedings/', {'main': 35}),
+    2015: ('https://iclr.cc/archive/www/doku.php%3Fid=iclr2015:accepted-main.html', {'main': 31, 'workshop': 74}),
+    2016: ('https://iclr.cc/archive/www/doku.php%3Fid=iclr2016:accepted-main.html', {'main': 80}),
+}
+SECTIONS = {
+    2015: {'Main Conference - Oral Presentations': ('main', 'oral'),
+           'Main Conference - Poster Presentations': ('main', 'poster'),
+           'Workshop Papers': ('workshop', 'workshop')},
+    2016: {'Oral Presentations': ('main', 'oral'), 'Poster Presentations': ('main', 'poster')},
+}
+
+
+def arxiv_link(url):
+    parsed = urlsplit(url)
+    if parsed.hostname != 'arxiv.org':
+        return None
+    match = re.fullmatch(r'/(?:abs|pdf)/(\d{4}\.\d{4,5})(v[1-9]\d*)?(?:\.pdf)?', parsed.path)
+    if (parsed.scheme not in ('http', 'https') or parsed.netloc != 'arxiv.org'
+            or parsed.query or parsed.fragment or not match):
+        raise ValueError('Unexpected official arXiv link')
+    return match[1], match[2] or None
+
+
+def without_links(node):
+    if node.tag in ('a', 'script', 'style'):
+        return ''
+    value = ''.join(without_links(n) if isinstance(n, Node) else n for n in node.children)
+    return ' '+value+' ' if node.tag in ('div', 'li', 'p', 'br') else value
+
+
+def authors(display, year):
+    parts = display.rstrip(';').split(';') if year == 2014 else re.split(r',\s*(?:and\s+)?|\s+and\s+', display)
+    names = [clean(p) for p in parts]
+    if not names or any(not name for name in names):
+        raise ValueError('Missing author or unsupported author delimiter')
+    return names
+
+
+def parse_page(html, year, evidence):
+    if year not in PAGES:
+        raise ValueError('Unreviewed ICLR archive year')
+    document = Document(html)
+    nodes = list(document.root.walk())
+    headings = [clean(n.text()) for n in nodes if n.tag in ('h1', 'h2', 'h3')]
+    if year == 2014:
+        if 'Conference Proceedings' not in headings or 'conference papers accepted' not in clean(document.root.text()):
+            raise ValueError('Unexpected ICLR 2014 accepted list')
+    elif (set(SECTIONS[year]) - set(headings)
+          or (year == 2016 and 'Accepted Papers (Conference Track)' not in headings)):
+        raise ValueError('Unexpected ICLR accepted sections')
+    entries = []
+    section = None
+    for index, node in enumerate(nodes):
+        if node.tag in ('h1', 'h2', 'h3'):
+            section = clean(node.text())
+        if year == 2014:
+            if node.tag != 'a' or not arxiv_link(node.attrs.get('href', '')):
+                continue
+            link = node
+            # This archived Google Sites page has an entry outside a paragraph.
+            # Authors can span several differently formatted italic spans.
+            # Read their whole paragraph, never only the first styled fragment.
+            display = None
+            for following in nodes[index+sum(1 for _ in link.walk()):]:
+                if following.tag == 'a' and arxiv_link(following.attrs.get('href', '')):
+                    break
+                if following.tag in ('i', 'em') or (following.tag == 'p' and any(
+                        n.tag in ('i', 'em') or 'font-style:italic' in n.attrs.get('style', '').replace(' ', '')
+                        for n in following.walk())):
+                    text = clean(following.text())
+                    if text:
+                        display = text
+                        break
+            if not display:
+                raise ValueError('Missing explicit ICLR 2014 author span')
+            track, presentation = 'main', 'conference'
+        else:
+            if node.tag != 'li':
+                continue
+            links = [n for n in node.walk() if n.tag == 'a' and arxiv_link(n.attrs.get('href', ''))]
+            if not links:
+                continue
+            if len(links) != 1 or section not in SECTIONS[year]:
+                raise ValueError('Ambiguous paper link or unknown accepted section')
+            link, = links
+            display = clean(without_links(node)).lstrip(',').strip()
+            track, presentation = SECTIONS[year][section]
+        arxiv, version = arxiv_link(link.attrs['href'])
+        title = clean(link.text())
+        if not title:
+            raise ValueError('Empty official title')
+        entries.append({'arxiv': arxiv, 'version': version, 'title': title,
+                        'authors': authors(display, year), 'authors_display': display,
+                        'paper_url': link.attrs['href'], 'track': track,
+                        'section': section, 'presentation': presentation})
+    # Check every arXiv occurrence, including links outside the expected layout.
+    occurrences = sum(n.tag == 'a' and bool(arxiv_link(n.attrs.get('href', ''))) for n in nodes)
+    if len(entries) != occurrences or not entries:
+        raise ValueError('Some official paper links were not parsed')
+    grouped = defaultdict(list)
+    for entry in entries:
+        grouped[(entry['track'], entry['arxiv'])].append(entry)
+    result = []
+    for (track, arxiv), variants in grouped.items():
+        first = variants[0]
+        if any((v['title'], v['authors']) != (first['title'], first['authors']) for v in variants):
+            raise ValueError('Repeated presentation has conflicting title or authors; review required')
+        presentations = sorted({v['presentation'] for v in variants})
+        result.append({'source': SOURCE, 'external_id': f'{year}/{track}/{arxiv}',
+                       'url': PAGES[year][0], 'title': first['title'], 'abstract': None,
+                       'authors': first['authors'], 'identifiers': {'arxiv': arxiv},
+                       'venue': 'ICLR', 'venue_aliases': [], 'year': year, 'track': track,
+                       'status': 'accepted', 'observed_at': evidence['observed_at'],
+                       'raw_decision': 'listed in official ICLR accepted '+track+' list',
+                       'metadata': {'source_evidence': evidence, 'source_variants': variants,
+                                    'presentations': presentations, 'decision_date_precision': 'not_supplied',
+                                    'identity_note': 'Official arXiv link, not title matching; validate canonical identity before import.',
+                                    'decision_evidence': 'Archived accepted list, not an original decision note.'},
+                       'tags': [{'namespace': SOURCE+':presentation', 'value': value} for value in presentations]})
+    return result
+
+
+def read_page(year, *, cache=None, snapshots=None):
+    if bool(cache) == bool(snapshots):
+        raise ValueError('Choose exactly one cache or frozen snapshot directory')
+    url = PAGES[year][0]
+    if snapshots:
+        root = Path(snapshots).resolve()
+        receipts = json.loads((root/'receipts.json').read_bytes())['receipts']
+        matches = [r for r in receipts if r['url'] == url]
+        if len(matches) != 1:
+            raise ValueError('Expected one exact official response receipt')
+        receipt, = matches
+        filename = Path(receipt['file'])
+        path = root/filename
+        if (filename.is_absolute() or '..' in filename.parts or not path.resolve().is_relative_to(root)
+                or receipt['status'] != 200):
+            raise ValueError('Unsafe or unsuccessful archive snapshot')
+        data = path.read_bytes()
+        if (len(data) > 8*1024**2 or len(data) != receipt['bytes']
+                or hashlib.sha256(data).hexdigest() != receipt['sha256']):
+            raise ValueError('Archive snapshot checksum or size differs')
+        observed = timestamp(receipt['finished_at'])
+    else:
+        data = fetch(url, cache, 8*1024**2, delay=1)
+        receipt = json.loads((Path(cache)/hashlib.sha256(url.encode()).hexdigest()).with_suffix('.json').read_bytes())
+        observed = timestamp(receipt['retrieved_at'])
+    evidence = {'url': url, 'sha256': hashlib.sha256(data).hexdigest(), 'bytes': len(data),
+                'file': 'evidence/'+hashlib.sha256(data).hexdigest()+'.html',
+                'observed_at': observed, 'http_status': 200, 'response_receipt': receipt}
+    return data, evidence
+
+
+def collect(year, out, *, cache=None, snapshots=None):
+    if year not in PAGES:
+        raise ValueError('Only independently reviewed ICLR archive years are supported')
+    out = Path(out)
+    out.mkdir(parents=True, exist_ok=True)
+    with (out/'iclr-archive.collect.lock').open('a') as lock:
+        fcntl.flock(lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
+        report = out/f'iclr-archive-{year}.json'
+        if report.exists():
+            raise FileExistsError('Existing completed archive output must be inspected, not overwritten')
+        data, evidence = read_page(year, cache=cache, snapshots=snapshots)
+        records = parse_page(data.decode('utf-8'), year, evidence)
+        counts = Counter(r['track'] for r in records)
+        if dict(counts) != PAGES[year][1]:
+            raise ValueError('Distinct archive entries differ from reviewed inventory')
+        files = []
+        with tempfile.TemporaryDirectory(prefix='.iclr-archive-', dir=out) as temporary:
+            stage = Path(temporary)
+            (stage/'evidence').mkdir()
+            (stage/evidence['file']).write_bytes(data)
+            for track in sorted(counts):
+                group = [r for r in records if r['track'] == track]
+                path = stage/f'iclr-archive-{year}-{track}.jsonl'
+                path.write_text(''.join(json.dumps(r, ensure_ascii=False)+'\n' for r in group))
+                manifest = {'source': SOURCE, 'parser_version': 1, 'venue': 'ICLR', 'year': year,
+                            'track': track, 'count': len(group), 'file': str(out/path.name),
+                            'file_sha256': hashlib.sha256(path.read_bytes()).hexdigest(),
+                            'list_url': PAGES[year][0], 'status': 'partial', 'missing_abstract_count': len(group)}
+                path.with_suffix('.manifest.json').write_text(json.dumps(manifest, ensure_ascii=False, indent=2)+'\n')
+                files.append(manifest)
+            result = {'source': SOURCE, 'year': year, 'records': len(records), 'files': files,
+                      'source_evidence': evidence, 'database_written': False, 'pdfs_downloaded': False,
+                      'status': 'collected_pending_identity_review',
+                      'note': 'Accepted list only. Oral/poster are presentation evidence; absent papers are not rejected. '
+                              'ICLR2014 workshop and other unlisted tracks remain outside these reviewed pages.'}
+            (stage/report.name).write_text(json.dumps(result, ensure_ascii=False, indent=2)+'\n')
+            (out/'evidence').mkdir(exist_ok=True)
+            for path in (stage/'evidence').iterdir():
+                path.replace(out/'evidence'/path.name)
+            for path in stage.iterdir():
+                if path.is_file() and path.name != report.name:
+                    path.replace(out/path.name)
+            (stage/report.name).replace(report)
+        return result
+
+
+def main(argv=None, *, prog=None):
+    parser = argparse.ArgumentParser(prog=prog)
+    parser.add_argument('--year', type=int, choices=sorted(PAGES), required=True)
+    parser.add_argument('--out', required=True)
+    source = parser.add_mutually_exclusive_group(required=True)
+    source.add_argument('--cache')
+    source.add_argument('--snapshots')
+    args = parser.parse_args(argv)
+    print(json.dumps(collect(args.year, args.out, cache=args.cache, snapshots=args.snapshots), ensure_ascii=False))

tests/test_aamas_proceedings.py

@@ -0,0 +1,151 @@
+"""Publisher evidence, section boundaries and native-ingestion regression checks."""
+import hashlib
+import json
+import re
+from pathlib import Path
+import sqlite3
+import tempfile
+import unittest
+from unittest.mock import patch
+
+from paper_atlas.collectors import aamas
+from paper_atlas.ingestion.records import ingest_file
+
+
+def paper(pid, abstract=True):
+    summary = '<span class="abstract">Research with <i>evidence</i>.<br>More detail.</span>' if abstract else ''
+    return f'''<div class="paper" id="{pid}"><span class="id">{pid}</span>
+    <p class="paper"><span class="title"><a href="../papers/{pid}.pdf">{summary}
+    A structured &amp; auditable paper {pid}</a></span><span class="authors">
+    <a href="authors.html#Jane">Jane Doe<span class="amount">has 7 papers</span></a>, Bob Smith
+    </span></p></div>'''
+
+
+def page(section, pid, abstract=True):
+    heading = aamas.SECTIONS[section][0]
+    return (f'<html><head><title>{heading} - AAMAS 2012</title></head><body>'
+            f'<h1>{heading}</h1><h2 class="section" id="s-1A">Session 1A – Robotics I</h2>'
+            +paper(pid, abstract)+'</body></html>')
+
+
+class AamasProceedingsTests(unittest.TestCase):
+    def snapshots(self, root):
+        root.mkdir()
+        receipts = []
+        items = {'introduction': ('<title>AAMAS 2012</title><p>Aggregate withdrawals do not identify papers.</p>', aamas.ROOT)}
+        for index, section in enumerate(aamas.SECTIONS):
+            items[section] = (page(section, f'P{index}_1', section != 'extabstracts'), aamas.ROOT+'resources/'+section+'.html')
+        for key, (html, url) in items.items():
+            data = html.encode()
+            (root/(key+'.html')).write_bytes(data)
+            receipts.append({'url': url, 'status': 200, 'file': key+'.html', 'bytes': len(data),
+                             'sha256': hashlib.sha256(data).hexdigest(), 'finished_at': '2026-11-09T00:00:00+00:00'})
+        (root/'receipts.json').write_text(json.dumps({'receipts': receipts}))
+        return root
+
+    def test_hidden_abstract_and_author_badges_are_not_title_or_authors(self):
+        rows = aamas.parse_section(page('fullpapers', '1A_1'), 'fullpapers', '2026-11-09T00:00:00Z', {'sha256': 'proof'})
+        row, = rows
+        self.assertEqual(row['title'], 'A structured & auditable paper 1A_1')
+        self.assertEqual(row['abstract'], 'Research with evidence. More detail.')
+        self.assertEqual(row['authors'], ['Jane Doe', 'Bob Smith'])
+        self.assertEqual(row['metadata']['authors_display'], 'Jane Doe, Bob Smith')
+        self.assertEqual(row['url'], aamas.ROOT+'resources/fullpapers.html#1A_1')
+        self.assertEqual(row['metadata']['paper_url'], aamas.ROOT+'papers/1A_1.pdf')
+        self.assertEqual(row['metadata']['source_evidence'], {'sha256': 'proof'})
+
+    def test_publication_formats_and_session_topics_do_not_invent_submission_tracks(self):
+        for section, (_, fmt, track, _) in aamas.SECTIONS.items():
+            row, = aamas.parse_section(page(section, 'P_1', False), section, '2026-11-09T00:00:00Z', {})
+            self.assertEqual((row['track'], row['metadata']['publication_format']), (track, fmt))
+            self.assertIsNone(row['abstract'])
+            self.assertEqual(row['status'], 'accepted')
+            self.assertEqual(row['metadata']['decision_date_precision'], 'not_supplied')
+            self.assertEqual(row['metadata']['session']['title'], 'Session 1A – Robotics I')
+            self.assertIn({'namespace': 'aamas_proceedings:publication_format', 'value': fmt}, row['tags'])
+        self.assertEqual(aamas.SECTIONS['fullpapers'][2], 'proceedings_unspecified')
+        self.assertEqual(aamas.SECTIONS['extabstracts'][2], 'proceedings_unspecified')
+
+    def test_changed_edition_section_duplicate_id_or_pdf_link_is_rejected(self):
+        html = page('fullpapers', '1A_1')
+        for changed in [html.replace('AAMAS 2012', 'AAMAS 2025'),
+                        html.replace('<h1>Full Papers</h1>', '<h1>Rejected Papers</h1>'),
+                        html.replace('</body>', paper('1A_1')+'</body>'),
+                        html.replace('../papers/1A_1.pdf', 'https://example.org/1A_1.pdf'),
+                        html.replace('../papers/1A_1.pdf', '../papers/1A_2.pdf')]:
+            with self.subTest(changed=changed):
+                with self.assertRaises(ValueError):
+                    aamas.parse_section(changed, 'fullpapers', '2026-11-09T00:00:00Z', {})
+
+    def test_frozen_responses_require_checksums_success_and_safe_paths(self):
+        for failure in ['checksum', 'status', 'path']:
+            with self.subTest(failure=failure), tempfile.TemporaryDirectory() as temporary:
+                root = self.snapshots(Path(temporary)/'source')
+                path = root/'receipts.json'
+                receipts = json.loads(path.read_text())
+                item = receipts['receipts'][0]
+                if failure == 'checksum': item['sha256'] = '0'*64
+                elif failure == 'status': item['status'] = 404
+                else: item['file'] = '../outside.html'
+                path.write_text(json.dumps(receipts))
+                with self.assertRaises(ValueError):
+                    aamas.read_pages(snapshots=root)
+
+    def test_reviewed_section_counts_and_year_are_required(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            source = self.snapshots(root/'source')
+            with self.assertRaises(ValueError):
+                aamas.collect(2012, root/'out', snapshots=source)
+            self.assertFalse((root/'out/aamas-proceedings-2012.json').exists())
+            with self.assertRaises(ValueError):
+                aamas.collect(2025, root/'future', snapshots=source)
+            self.assertFalse((root/'future').exists())
+
+    def test_ids_colliding_across_sections_do_not_produce_a_completed_collection(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            source = self.snapshots(root/'source')
+            receipts_path = source/'receipts.json'
+            receipts = json.loads(receipts_path.read_text())
+            for item in receipts['receipts'][1:]:
+                path = source/item['file']
+                data = re.sub(r'P[0-9]_1', 'SAME_1', path.read_text()).encode()
+                path.write_bytes(data)
+                item.update(bytes=len(data), sha256=hashlib.sha256(data).hexdigest())
+            receipts_path.write_text(json.dumps(receipts))
+            small = {key: (*value[:3], 1) for key, value in aamas.SECTIONS.items()}
+            with patch.dict(aamas.SECTIONS, small, clear=True), self.assertRaises(ValueError):
+                aamas.collect(2012, root/'out', snapshots=source)
+            self.assertFalse((root/'out/aamas-proceedings-2012.json').exists())
+
+    def test_collection_and_native_ingestion_preserve_formats_evidence_and_missing_abstracts(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            source = self.snapshots(root/'source')
+            small = {key: (*value[:3], 1) for key, value in aamas.SECTIONS.items()}
+            with patch.dict(aamas.SECTIONS, small, clear=True):
+                result = aamas.collect(2012, root/'out', snapshots=source)
+            self.assertEqual(result['records'], 4)
+            self.assertEqual(len(result['files']), 3)
+            self.assertFalse(result['database_written'])
+            self.assertFalse(result['pdfs_downloaded'])
+            db = root/'sample.sqlite'
+            for manifest in result['files']:
+                path = Path(manifest['file'])
+                self.assertEqual(hashlib.sha256(path.read_bytes()).hexdigest(), manifest['file_sha256'])
+                for raw in path.read_text().splitlines():
+                    record = json.loads(raw)
+                    evidence = record['metadata']['source_evidence']
+                    self.assertEqual(hashlib.sha256((root/'out'/evidence['file']).read_bytes()).hexdigest(), evidence['sha256'])
+                ingest_file(db, path)
+            with sqlite3.connect(db) as connection:
+                self.assertEqual(connection.execute('SELECT count(*) FROM papers').fetchone()[0], 4)
+                self.assertEqual(connection.execute('SELECT count(*) FROM submissions').fetchone()[0], 4)
+                self.assertEqual(connection.execute("SELECT count(*) FROM decisions WHERE status='accepted'").fetchone()[0], 4)
+                self.assertEqual(connection.execute('SELECT count(*) FROM papers WHERE abstract IS NULL').fetchone()[0], 1)
+                metadata = [json.loads(r[0]) for r in connection.execute('SELECT metadata_json FROM source_records')]
+                self.assertEqual({r['publication_format'] for r in metadata}, {'full_paper','extended_abstract','demo','doctoral_abstract'})
+                namespaces = {r[0] for r in connection.execute('SELECT DISTINCT namespace FROM tags')}
+                self.assertEqual(namespaces, {'aamas_proceedings:publication_format', 'aamas_proceedings:session'})
+                self.assertEqual(connection.execute('PRAGMA foreign_key_check').fetchall(), [])

tests/test_iclr_archive.py

@@ -0,0 +1,148 @@
+"""Historical accepted lists, repeated presentations and preserved work histories."""
+import hashlib
+import json
+from pathlib import Path
+import sqlite3
+import tempfile
+import unittest
+from unittest.mock import patch
+
+from paper_atlas.collectors import iclr_archive as archive
+from paper_atlas.db.store import Store
+from paper_atlas.ingestion.records import ingest_file
+
+OBSERVED = '2026-11-09T00:00:00Z'
+
+
+def entry(identifier, title='A shared research paper', display='Jane Doe and Bob Smith'):
+    return f'<li><div><a href="http://arxiv.org/abs/{identifier}">{title}</a>, {display}</div></li>'
+
+
+def page2015():
+    return ('<h3>Main Conference - Oral Presentations</h3><ol>'+entry('1412.0001v2')+'</ol>'
+            '<h3>Main Conference - Poster Presentations</h3><ol>'+entry('1412.0001v2')+'</ol>'
+            '<h3>Workshop Papers</h3><ol>'+entry('1412.0002', 'A workshop paper')+'</ol>')
+
+
+class IclrArchiveTests(unittest.TestCase):
+    def frozen(self, root, year, html):
+        root.mkdir()
+        data = html.encode()
+        (root/'page.html').write_bytes(data)
+        receipt = {'url': archive.PAGES[year][0], 'file': 'page.html', 'status': 200,
+                   'bytes': len(data), 'sha256': hashlib.sha256(data).hexdigest(), 'finished_at': OBSERVED}
+        (root/'receipts.json').write_text(json.dumps({'receipts': [receipt]}))
+        return root
+
+    def test_oral_poster_repeat_is_one_attempt_with_all_source_variants(self):
+        rows = archive.parse_page(page2015(), 2015, {'observed_at': OBSERVED})
+        main, workshop = rows
+        self.assertEqual((main['track'], workshop['track']), ('main', 'workshop'))
+        self.assertEqual(main['identifiers'], {'arxiv': '1412.0001'})
+        self.assertEqual(main['external_id'], '2015/main/1412.0001')
+        self.assertEqual(main['metadata']['presentations'], ['oral', 'poster'])
+        self.assertEqual(len(main['metadata']['source_variants']), 2)
+        self.assertEqual(main['metadata']['source_variants'][0]['version'], 'v2')
+        self.assertEqual(main['authors'], ['Jane Doe', 'Bob Smith'])
+        self.assertTrue(all(r['status'] == 'accepted' and r['abstract'] is None for r in rows))
+
+    def test_2014_author_span_outside_paragraph_and_trailing_separator(self):
+        html = ('<h3>Conference Proceedings</h3><p>conference papers accepted</p>'
+                '<div><b><a href="http://arxiv.org/abs/1312.0001">A <i>research</i> title</a></b></div>'
+                '<p><span style="font-style: italic">Jane Doe; </span>'
+                '<span style="font-style:italic">Bob Smith; Carol Wu;</span></p>'
+                '<div><a href="http://arxiv.org/abs/1312.0002">Another title</a>'
+                '<div><i><span>First Author; </span><span>Second Author</span></i></div></div>')
+        row, unwrapped = archive.parse_page(html, 2014, {'observed_at': OBSERVED})
+        self.assertEqual(row['title'], 'A research title')
+        self.assertEqual(row['authors'], ['Jane Doe', 'Bob Smith', 'Carol Wu'])
+        self.assertEqual(row['metadata']['source_variants'][0]['authors_display'], 'Jane Doe; Bob Smith; Carol Wu;')
+        self.assertEqual(row['track'], 'main')
+        self.assertEqual(unwrapped['authors'], ['First Author', 'Second Author'])
+
+    def test_same_arxiv_in_different_tracks_keeps_separate_source_attempts(self):
+        html = page2015().replace('1412.0002', '1412.0001v3')
+        rows = archive.parse_page(html, 2015, {'observed_at': OBSERVED})
+        self.assertEqual(len(rows), 2)
+        self.assertEqual({r['external_id'] for r in rows}, {'2015/main/1412.0001', '2015/workshop/1412.0001'})
+        self.assertEqual(rows[1]['metadata']['source_variants'][0]['version'], 'v3')
+
+    def test_2016_code_links_and_breaks_do_not_become_authors(self):
+        html = ('<h1>Accepted Papers (Conference Track)</h1><h3>Oral Presentations</h3><ol>'
+                '<li><a href="http://arxiv.org/abs/1511.00001">A title</a>'
+                '<a href="https://example.org/code">[code]</a><br>Jane Doe, Bob Smith</li></ol>'
+                '<h3>Poster Presentations</h3>')
+        row, = archive.parse_page(html, 2016, {'observed_at': OBSERVED})
+        self.assertEqual(row['authors'], ['Jane Doe', 'Bob Smith'])
+        self.assertEqual(row['metadata']['presentations'], ['oral'])
+
+    def test_conflicting_repeat_unknown_sections_and_unparsed_links_fail(self):
+        variants = [page2015().replace('Poster Presentations', 'Other Presentations'),
+                    page2015().replace('</ol>', '</ol><a href="http://arxiv.org/abs/1412.0003">stray</a>', 1),
+                    page2015().replace('Jane Doe and Bob Smith', 'Different Author', 1)]
+        for html in variants:
+            with self.subTest(html=html), self.assertRaises(ValueError):
+                archive.parse_page(html, 2015, {'observed_at': OBSERVED})
+
+    def test_arxiv_versions_are_preserved_and_unsafe_links_rejected(self):
+        self.assertEqual(archive.arxiv_link('https://arxiv.org/pdf/1511.00001v3.pdf'), ('1511.00001', 'v3'))
+        self.assertIsNone(archive.arxiv_link('https://arxiv.org.example.org/abs/1511.00001'))
+        for url in ['https://arxiv.org/abs/1511.00001?other=1', 'ftp://arxiv.org/abs/1511.00001',
+                    'https://user@arxiv.org/abs/1511.00001', 'https://arxiv.org/abs/not-a-paper']:
+            with self.subTest(url=url), self.assertRaises(ValueError):
+                archive.arxiv_link(url)
+
+    def test_receipt_hash_status_path_and_symlink_cannot_escape_snapshot(self):
+        for failure in ['hash', 'status', 'path', 'symlink']:
+            with self.subTest(failure=failure), tempfile.TemporaryDirectory() as temporary:
+                root = Path(temporary)
+                source = self.frozen(root/'source', 2015, page2015())
+                file = source/'receipts.json'
+                data = json.loads(file.read_text())
+                receipt = data['receipts'][0]
+                if failure == 'hash': receipt['sha256'] = '0'*64
+                elif failure == 'status': receipt['status'] = 404
+                elif failure == 'path': receipt['file'] = '../outside.html'
+                else:
+                    (root/'outside.html').write_text(page2015())
+                    (source/'page.html').unlink()
+                    (source/'page.html').symlink_to(root/'outside.html')
+                file.write_text(json.dumps(data))
+                with self.assertRaises(ValueError):
+                    archive.read_page(2015, snapshots=source)
+
+    def test_changed_inventory_leaves_no_completed_output(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            source = self.frozen(root/'source', 2015, page2015())
+            with self.assertRaises(ValueError):
+                archive.collect(2015, root/'out', snapshots=source)
+            self.assertFalse((root/'out/iclr-archive-2015.json').exists())
+
+    def test_native_import_keeps_rejected_to_accepted_history_and_abstract(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            source = self.frozen(root/'source', 2015, page2015())
+            with patch.dict(archive.PAGES, {2015: (archive.PAGES[2015][0], {'main': 1, 'workshop': 1})}):
+                result = archive.collect(2015, root/'out', snapshots=source)
+                with self.assertRaises(FileExistsError):
+                    archive.collect(2015, root/'out', snapshots=source)
+            db = root/'sample.sqlite'
+            store = Store(db)
+            pid, rid = store.record('arxiv', '1412.0001', 'https://arxiv.org/abs/1412.0001',
+                                    'A shared research paper', 'Keep this canonical abstract.',
+                                    ['Jane Doe', 'Bob Smith'], {'arxiv': '1412.0001'}, {})
+            store.decision(pid, rid, 'Earlier Conference', 2014, 'main', 'original-attempt',
+                           'https://example.org/rejected', 'rejected', 'explicit earlier decision', observed_at=OBSERVED)
+            store.conn.commit()
+            store.conn.close()
+            for manifest in result['files']:
+                ingest_file(db, manifest['file'])
+                ingest_file(db, manifest['file'])
+            with sqlite3.connect(db) as c:
+                self.assertEqual(c.execute('SELECT count(*) FROM papers').fetchone()[0], 2)
+                self.assertEqual(c.execute('SELECT abstract FROM papers WHERE id=?', (pid,)).fetchone()[0], 'Keep this canonical abstract.')
+                history = c.execute('SELECT v.acronym,e.year,d.status FROM decisions d JOIN submissions s ON s.id=d.submission_id JOIN editions e ON e.id=s.edition_id JOIN venues v ON v.id=e.venue_id WHERE s.paper_id=? ORDER BY e.year', (pid,)).fetchall()
+                self.assertEqual(history, [('Earlier Conference', 2014, 'rejected'), ('ICLR', 2015, 'accepted')])
+                self.assertEqual(c.execute('SELECT count(*) FROM submissions').fetchone()[0], 3)
+                self.assertEqual(c.execute('PRAGMA foreign_key_check').fetchall(), [])