Prioritize realtime news and make historical backfill resumable

backend/alembic/versions/20261106_dd4567890123_priority_queue.py

@@ -0,0 +1,24 @@
+"""Persist realtime boundaries and enforce one active call per subject."""
+from alembic import op
+import sqlalchemy as sa
+
+revision = 'dd4567890123'
+down_revision = 'dc3456789012'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('news_research_settings', sa.Column('realtime_from', sa.DateTime(timezone=True)))
+    op.add_column('news_research_events', sa.Column('realtime_pending', sa.Boolean(), nullable=False, server_default=sa.false()))
+    op.create_index('uq_news_attempt_active', 'news_research_attempts', ['package_id'], unique=True,
+                    postgresql_where=sa.text("state = 'processing'"))
+    op.create_index('uq_news_version_active', 'news_research_versions', ['event_id'], unique=True,
+                    postgresql_where=sa.text("state = 'processing'"))
+
+
+def downgrade():
+    op.drop_index('uq_news_version_active', table_name='news_research_versions')
+    op.drop_index('uq_news_attempt_active', table_name='news_research_attempts')
+    op.drop_column('news_research_events', 'realtime_pending')
+    op.drop_column('news_research_settings', 'realtime_from')

backend/src/alphapulse/news_research/api.py

@@ -20,8 +20,9 @@ from alphapulse.news_research.models import (
     Version,
     Reference,
     BatchEvent,
+    Batch,
 )
-from alphapulse.news_research import service, batches, vocabulary as vocab
+from alphapulse.news_research import service, batches, scheduling, vocabulary as vocab
 from alphapulse.news_research.models import VocabularyVersion
 from alphapulse.news_research.contracts import (
     INDEX_ASSIGN_SKILL,
@@ -90,6 +91,8 @@ class SettingsInput(Strict):
     index: ModelConfig
     research: ModelConfig
     concurrency: int = Field(default=3, ge=1, le=16)
+    start_at: AwareDatetime | None = None
+    base_revision: int | None = Field(default=None, ge=0)
 
 
 async def settings_row(session):
@@ -101,7 +104,7 @@ async def settings_row(session):
                 id=1,
                 config={},
                 enabled=False,
-                start_at=datetime(2026, 10, 31, 16, tzinfo=UTC),
+                start_at=datetime(2026, 11, 4, 16, tzinfo=UTC),
             )
             .on_conflict_do_nothing(index_elements=["id"])
         )
@@ -115,6 +118,8 @@ async def settings(session: DB):
     row = await settings_row(session)
     return success(
         {"config": row.config, "enabled": row.enabled, "start_at": row.start_at,
+         "control_revision": row.control_revision, "realtime_from": row.realtime_from,
+         "timezone": "Asia/Shanghai", "queue": await scheduling.queue_status(session, row),
          "batch": await batches.progress(session)}
     )
 
@@ -125,21 +130,24 @@ async def coverage(session: DB, start_at: AwareDatetime | None = None):
     start = (start_at if start_at is not None else row.start_at).astimezone(UTC)
     if start > datetime.now(UTC):
         raise HTTPException(422, "回补起始时间不能晚于当前时间")
-    return success(await batches.coverage(session, start))
+    effective = min(start, row.realtime_from) if row.realtime_from else start
+    report = await batches.coverage(session, effective)
+    return success({**report, 'backfill_start_at': start, 'realtime_from': row.realtime_from})
 
 
 @router.put("/settings")
 async def save(body: SettingsInput, session: DB):
     await settings_row(session)
-    await session.execute(
-        update(ResearchSettings)
-        .where(ResearchSettings.id == 1)
-        .values(
-            config=body.model_dump(),
-            enabled=False,
-            control_revision=ResearchSettings.control_revision + 1,
-        )
-    )
+    row = await session.get(ResearchSettings, 1, populate_existing=True, with_for_update=True)
+    if body.base_revision is not None and body.base_revision != row.control_revision:
+        raise HTTPException(409, "设置已变化，请重新读取后保存")
+    if body.start_at is not None:
+        if body.start_at > datetime.now(UTC):
+            raise HTTPException(422, "回补起始时间不能晚于当前时间")
+        row.start_at = body.start_at.astimezone(UTC)
+    row.config = body.model_dump(exclude={"start_at", "base_revision"})
+    row.enabled = False
+    row.control_revision += 1
     await session.commit()
     return success(None)
 
@@ -164,6 +172,8 @@ class EnableInput(Strict):
 async def enable(session: DB, body: EnableInput | None = None):
     row = await settings_row(session)
     start_at = (body.start_at if body is not None else row.start_at).astimezone(UTC)
+    if start_at != row.start_at:
+        raise HTTPException(422, "请在模型与 Skills 中保存回补时间并暂停后再启用")
     if start_at > datetime.now(UTC):
         raise HTTPException(422, "回补起始时间不能晚于当前时间")
     if not await session.scalar(text("SELECT pg_try_advisory_xact_lock(20261103, 2)")):
@@ -172,11 +182,11 @@ async def enable(session: DB, body: EnableInput | None = None):
         raise HTTPException(409, "请先暂停两阶段处理")
     running = await session.scalar(
         select(func.count())
-        .select_from(Package)
-        .where(Package.state.in_(["index_processing", "assign_processing"]))
+        .select_from(Attempt)
+        .where(Attempt.state == "processing")
     )
     running += await session.scalar(
-        select(func.count()).select_from(Event).where(Event.state == "processing")
+        select(func.count()).select_from(Version).where(Version.state == "processing")
     )
     if running:
         raise HTTPException(409, "请等待已接收任务完成后再验证")
@@ -259,7 +269,10 @@ async def enable(session: DB, body: EnableInput | None = None):
     if row.control_revision != control_revision or row.config != original_config:
         raise HTTPException(409, "验证期间已暂停或设置变化，请重新验证")
     report = await batches.coverage(session, start_at)
-    row.start_at = start_at
+    if row.realtime_from is None:
+        row.realtime_from = datetime.now(UTC)
+    await session.execute(update(Batch).where(Batch.phase.in_(["assigning", "researching"]))
+                          .values(phase="rescheduled", finished_at=datetime.now(UTC)))
     row.enabled = True
     row.control_revision += 1
     await session.commit()
@@ -480,6 +493,18 @@ async def event(identifier: int, session: DB):
             .order_by(Version.id.desc())
         )
     )
+    wait_reason = None
+    if row.state == 'pending':
+        settings = await settings_row(session)
+        unfinished = [(p, n) for p, n in members if p.state != 'done' or p.content_hash != n.content_hash]
+        if any(n.published_at < scheduling.boundary(settings) for p, n in unfinished):
+            wait_reason = '范围外成员尚未完成，扩大回补范围后可继续研究'
+        elif any(p.state.endswith('_failed') for p, n in unfinished):
+            wait_reason = '成员包处理失败，需手动重试后才能研究'
+        elif unfinished:
+            wait_reason = '等待成员包完成关键词与事件归属'
+        elif row.due_at > datetime.now(UTC):
+            wait_reason = '正在汇集事件变化，聚合窗口结束后研究'
     latest = next((v for v in versions if v.state == "done"), None)
     references = await version_references(session, latest.id) if latest else []
     return success(
@@ -490,6 +515,7 @@ async def event(identifier: int, session: DB):
             "result": row.result,
             "error": row.error,
             "revision": row.revision,
+            "wait_reason": wait_reason,
             "packages": [await package_out(session, p, n) for p, n in members],
             "references": references,
             "versions": [

backend/src/alphapulse/news_research/batches.py

@@ -5,6 +5,7 @@ from sqlalchemy import select, or_, and_, exists, func, any_, case
 from alphapulse.models import NewsItem
 from alphapulse.news_research.models import Batch, BatchPackage, BatchEvent, Package, Event, Membership, Attempt
 from alphapulse.news_research.service import enroll
+from alphapulse.news_research.scheduling import scoped_event, ready_event
 
 
 async def coverage(session, start_at, cutoff=None):
@@ -48,13 +49,22 @@ async def coverage(session, start_at, cutoff=None):
 
 async def freeze(session, settings):
     cutoff = datetime.now(UTC)
-    ids = list(await session.scalars(select(NewsItem.id).outerjoin(Package, Package.news_id == NewsItem.id).where(
-        or_(and_(NewsItem.published_at >= settings.start_at, NewsItem.published_at <= cutoff, Package.id.is_(None)),
-            and_(Package.id.is_not(None), Package.content_hash != NewsItem.content_hash)))))
-    existing_ids = list(await session.scalars(select(Package.id).where(
-        Package.state.in_(['index_pending', 'assign_pending', 'index_failed', 'assign_failed']))))
-    event_cutoff = list(await session.scalars(select(Event.id).where(Event.state == "pending")))
+    scope = [NewsItem.published_at >= settings.start_at, NewsItem.published_at <= cutoff]
+    realtime_from = getattr(settings, 'realtime_from', None)
+    if realtime_from is not None:
+        scope.append(NewsItem.published_at < realtime_from)
+    candidates = select(NewsItem.id).outerjoin(Package, Package.news_id == NewsItem.id).where(
+        *scope, or_(Package.id.is_(None), Package.content_hash != NewsItem.content_hash,
+                    Package.state.in_(['index_pending', 'assign_pending'])))
+    ids = list(await session.scalars(candidates.order_by(NewsItem.published_at, NewsItem.id).limit(30)))
     await enroll(session, ids)
+    existing_ids = list(await session.scalars(select(Package.id).where(Package.news_id.in_(ids))))
+    deferred = exists(select(BatchEvent.batch_id).where(BatchEvent.event_id == Event.id,
+        BatchEvent.revision == Event.revision, BatchEvent.state == 'deferred'))
+    event_query = select(Event.id).where(Event.state == 'pending', scoped_event(settings), ready_event(), Event.due_at <= cutoff, ~deferred)
+    if realtime_from is not None:
+        event_query = event_query.where(~Event.realtime_pending)
+    event_cutoff = list(await session.scalars(event_query.order_by(Event.due_at, Event.id).limit(30)))
     # Failed items are reported once; only explicit retries or new source revisions rerun them.
     previous_failure = exists(select(BatchPackage.batch_id).where(
         BatchPackage.package_id == Package.id, BatchPackage.content_hash == Package.content_hash,
@@ -63,8 +73,6 @@ async def freeze(session, settings):
         or_(Package.id == any_(existing_ids), Package.news_id == any_(ids)), or_(
         Package.state.in_(['index_pending', 'assign_pending']),
         Package.state.in_(['index_failed', 'assign_failed']) & ~previous_failure))))
-    deferred = exists(select(BatchEvent.batch_id).where(BatchEvent.event_id == Event.id,
-        BatchEvent.revision == Event.revision, BatchEvent.state == 'deferred'))
     events = list(await session.scalars(select(Event).where(Event.id == any_(event_cutoff), Event.state == 'pending', ~deferred)))
     if not packages and not events:
         return None
@@ -83,7 +91,7 @@ async def freeze(session, settings):
     return batch
 
 
-async def actions(session, batch, active, slots):
+async def actions(session, batch, active, slots, settings=None):
     """Return stage/ID pairs; callers commit before launching and never overlap phases."""
     if batch.phase == 'assigning':
         rows = list(await session.execute(select(BatchPackage, Package, NewsItem).join(
@@ -94,7 +102,9 @@ async def actions(session, batch, active, slots):
         for item, package, news in rows:
             if item.state != 'pending':
                 continue
-            if item.content_hash != news.content_hash or item.content_hash != package.content_hash:
+            if settings is not None and news.published_at < settings.start_at:
+                item.state = 'range_paused'
+            elif item.content_hash != news.content_hash or item.content_hash != package.content_hash:
                 item.state = 'deferred'
             elif package.state == 'done':
                 item.state = 'done'
@@ -102,10 +112,12 @@ async def actions(session, batch, active, slots):
                 item.state = 'failed'
             elif package.state in ('index_pending', 'assign_pending'):
                 stage = 'index' if package.state == 'index_pending' else 'assign'
-                if (stage, package.id) not in active and len(result) < slots and (stage != 'assign' or not assigning):
+                if not any(identifier == package.id and task != 'event' for task, identifier in active) and len(result) < slots and (stage != 'assign' or not assigning):
                     result.append((stage, package.id))
                     assigning |= stage == 'assign'
-        if any(item.state == 'pending' for item, _, _ in rows) or active:
+        package_ids = {package.id for _, package, _ in rows}
+        batch_active = any(stage != 'event' and identifier in package_ids for stage, identifier in active)
+        if any(item.state == 'pending' for item, _, _ in rows) or batch_active:
             return result
         # Memberships now include events created by this batch. Existing affected events
         # were frozen up front, including memberships that have since been removed.
@@ -131,7 +143,13 @@ async def actions(session, batch, active, slots):
     for item, event in rows:
         if item.state not in ('pending', 'urgent_pending', 'processing') or ('event', event.id) in active:
             continue
-        if item.revision != event.revision:
+        if settings is not None and not await session.scalar(select(Event.id).where(Event.id == event.id, scoped_event(settings))):
+            item.state = 'range_paused'
+        elif settings is not None and event.realtime_pending:
+            item.state = 'realtime'
+        elif event.due_at > datetime.now(UTC):
+            item.state = 'aggregating'
+        elif item.revision != event.revision:
             item.state = 'deferred'
         elif event.state == 'done' or event.state == 'retired':
             item.state = 'done'
@@ -143,11 +161,17 @@ async def actions(session, batch, active, slots):
             invalid = await session.scalar(select(Membership.event_id).join(Package).join(NewsItem).where(
                 Membership.event_id == event.id, or_(Package.state != 'done', Package.content_hash != NewsItem.content_hash)).limit(1))
             if invalid:
-                item.state = 'deferred'
+                item.state = 'blocked'
             elif len(result) < slots:
                 item.state = 'processing'
                 result.append(('event', event.id))
-    if not result and not active and all(item.state not in ('pending', 'urgent_pending', 'processing') for item, _ in rows):
+    event_ids = {event.id for _, event in rows}
+    batch_active = any(stage == 'event' and identifier in event_ids for stage, identifier in active)
+    active_packages = {identifier for stage, identifier in active if stage != 'event'}
+    if active_packages:
+        batch_active |= bool(await session.scalar(select(BatchPackage.package_id).where(
+            BatchPackage.batch_id == batch.id, BatchPackage.package_id.in_(active_packages)).limit(1)))
+    if not result and not batch_active and all(item.state not in ('pending', 'urgent_pending', 'processing') for item, _ in rows):
         bad = any(item.state in ('failed', 'deferred') for item, _ in rows)
         bad |= bool(await session.scalar(select(BatchPackage.batch_id).where(
             BatchPackage.batch_id == batch.id, BatchPackage.state.in_(['failed', 'deferred'])).limit(1)))
@@ -163,5 +187,5 @@ async def progress(session):
     result = {'id': batch.id, 'phase': batch.phase, 'cutoff_at': batch.cutoff_at}
     for name, model in [('packages', BatchPackage), ('events', BatchEvent)]:
         counts = Counter(await session.scalars(select(model.state).where(model.batch_id == batch.id)))
-        result.update({name + '_total': sum(counts.values()), **{name + '_' + s: counts[s] for s in ('done', 'failed', 'deferred')}})
+        result.update({name + '_total': sum(counts.values()), **{name + '_' + s: counts[s] for s in ('done', 'failed', 'deferred', 'range_paused', 'blocked', 'realtime')}})
     return result

backend/src/alphapulse/news_research/models.py

@@ -6,6 +6,8 @@ from sqlalchemy import (
     DateTime,
     ForeignKey,
     Integer,
+    Index,
+    text,
     String,
     Text,
     UniqueConstraint,
@@ -32,6 +34,7 @@ class ResearchSettings(Base):
         Integer, default=0, server_default="0"
     )
     start_at: Mapped[datetime] = mapped_column(DateTime(timezone=True))
+    realtime_from: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
 
 
 class Package(Base):
@@ -49,6 +52,7 @@ class Package(Base):
 
 class Attempt(Base):
     __tablename__ = "news_research_attempts"
+    __table_args__ = (Index("uq_news_attempt_active", "package_id", unique=True, postgresql_where=text("state = 'processing'")),)
     id: Mapped[int] = mapped_column(BigInteger, primary_key=True)
     package_id: Mapped[int] = mapped_column(
         ForeignKey("news_research_packages.id"), index=True
@@ -75,6 +79,7 @@ class Event(Base):
     state: Mapped[str] = mapped_column(String(16), default="pending", index=True)
     result: Mapped[dict | None] = mapped_column(JSONB)
     error: Mapped[str | None] = mapped_column(Text)
+    realtime_pending: Mapped[bool] = mapped_column(default=False, server_default="false")
     dirty_since: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
     due_at: Mapped[datetime] = mapped_column(
         DateTime(timezone=True), server_default=func.now(), index=True
@@ -99,6 +104,7 @@ class Membership(Base):
 
 class Version(Base):
     __tablename__ = "news_research_versions"
+    __table_args__ = (Index("uq_news_version_active", "event_id", unique=True, postgresql_where=text("state = 'processing'")),)
     id: Mapped[int] = mapped_column(BigInteger, primary_key=True)
     event_id: Mapped[int] = mapped_column(
         ForeignKey("news_research_events.id"), index=True

backend/src/alphapulse/news_research/scheduling.py

@@ -0,0 +1,103 @@
+"""Priority selection over durable package and event states; no paid work here."""
+from datetime import UTC, datetime
+from sqlalchemy import select, exists, or_, and_, func, case
+from alphapulse.models import NewsItem
+from alphapulse.news_research.models import Package, Event, Membership, Attempt, Version, ResearchSettings
+
+
+def boundary(settings):
+    realtime_from = getattr(settings, 'realtime_from', None)
+    return min(settings.start_at, realtime_from) if realtime_from else settings.start_at
+
+
+def eligible(settings):
+    return and_(NewsItem.published_at >= boundary(settings), NewsItem.published_at <= datetime.now(UTC))
+
+
+def members(event_id):
+    return select(Membership.package_id).where(Membership.event_id == event_id)
+
+
+def ready_event():
+    return ~exists(select(Membership.package_id).join(Package).join(NewsItem).where(
+        Membership.event_id == Event.id,
+        or_(Package.state != 'done', Package.content_hash != NewsItem.content_hash)))
+
+
+def scoped_event(settings):
+    # Empty events must still reach the existing no-model retirement path.
+    return or_(exists(select(Membership.package_id).join(Package).join(NewsItem).where(
+        Membership.event_id == Event.id, eligible(settings))),
+        ~exists(select(Membership.package_id).where(Membership.event_id == Event.id)))
+
+
+async def control(session, config):
+    """The control lock spans the durable claim, never the remote model call."""
+    if '_control_revision' not in config:
+        return None  # Explicit bounded/offline callers retain their existing contract.
+    row = await session.get(ResearchSettings, 1, populate_existing=True, with_for_update=True)
+    if not row.enabled or row.control_revision != config['_control_revision']:
+        return False
+    return row
+
+
+async def mark_priority(session, event, news):
+    settings = await session.get(ResearchSettings, 1)
+    if settings and settings.realtime_from and news.published_at >= settings.realtime_from:
+        event.realtime_pending = True
+
+
+async def realtime_actions(session, settings, active, slots):
+    if settings.realtime_from is None or slots <= 0:
+        return []
+    now = datetime.now(UTC)
+    busy_packages = {identifier for stage, identifier in active if stage != 'event'}
+    busy_events = {identifier for stage, identifier in active if stage == 'event'}
+    result = []
+    events = await session.scalars(select(Event).where(
+        Event.state == 'pending', Event.realtime_pending, Event.due_at <= now,
+        scoped_event(settings), ready_event(), Event.id.not_in(busy_events),
+        ~exists(select(Version.id).where(Version.event_id == Event.id, Version.state == 'processing')),
+    ).order_by(Event.due_at, Event.id).limit(slots))
+    result.extend(('event', event.id) for event in events)
+    # Known historical dependencies inherit the waiting realtime event's priority.
+    dependency = exists(select(Membership.package_id).join(Event).where(
+        Membership.package_id == Package.id, Event.realtime_pending, Event.state == 'pending'))
+    priority = or_(NewsItem.published_at >= settings.realtime_from, dependency)
+    candidates = select(NewsItem.id).outerjoin(Package, Package.news_id == NewsItem.id).where(
+        eligible(settings), priority, or_(Package.id.is_(None), Package.content_hash != NewsItem.content_hash),
+        or_(Package.id.is_(None), Package.id.not_in(busy_packages))).order_by(NewsItem.published_at, NewsItem.id).limit(30)
+    ids = list(await session.scalars(candidates))
+    if ids:
+        from alphapulse.news_research.service import enroll
+        await enroll(session, ids)
+    assigning = any(stage == 'assign' for stage, _ in active)
+    for stage in ('assign', 'index'):
+        if stage == 'assign' and assigning:
+            continue
+        remaining = slots - len(result)
+        if remaining <= 0:
+            break
+        query = select(Package.id).join(NewsItem).where(
+            eligible(settings), priority, Package.state == stage + '_pending',
+            Package.id.not_in(busy_packages),
+            ~exists(select(Attempt.id).where(Attempt.package_id == Package.id, Attempt.state == 'processing')),
+        ).order_by(NewsItem.published_at, NewsItem.id).limit(1 if stage == 'assign' else remaining)
+        result.extend((stage, identifier) for identifier in await session.scalars(query))
+    return result
+
+
+async def queue_status(session, settings):
+    running = await session.scalar(select(func.count()).select_from(Attempt).where(Attempt.state == 'processing'))
+    running += await session.scalar(select(func.count()).select_from(Version).where(Version.state == 'processing'))
+    realtime_from = settings.realtime_from
+    lane = case((NewsItem.published_at >= realtime_from, 'realtime'), else_='backfill') if realtime_from else 'backfill'
+    if realtime_from:
+        groups = (await session.execute(select(lane, Package.state, func.count()).join(NewsItem)
+                   .where(eligible(settings)).group_by(lane, Package.state))).all()
+    else:
+        groups = [('backfill', state, count) for state, count in (await session.execute(
+            select(Package.state, func.count()).join(NewsItem).where(eligible(settings)).group_by(Package.state))).all()]
+    queues = {name: {state: count for selected, state, count in groups if selected == name}
+              for name in ('realtime', 'backfill')}
+    return {'running': running, 'draining': not settings.enabled and running > 0, **queues}

backend/src/alphapulse/news_research/service.py

@@ -27,6 +27,7 @@ from alphapulse.news_research.models import (
     Version,
     Reference,
 )
+from alphapulse.news_research.scheduling import control, mark_priority, boundary
 from alphapulse.news_research.contracts import (
     INDEX_ASSIGN_SKILL,
     task_skill,
@@ -280,6 +281,7 @@ async def enroll(session, ids):
                 .with_for_update()
             ):
                 dirty(event)
+                await mark_priority(session, event, row)
     await session.commit()
 
 
@@ -429,6 +431,9 @@ async def process_package(identifier, config):
 
 async def _process_package(identifier, config, expected_stage):
     async with SessionLocal() as session:
+        settings = await control(session, config)
+        if settings is False:
+            return
         package = await session.get(Package, identifier, with_for_update=True)
         if package is None:
             return
@@ -438,6 +443,10 @@ async def _process_package(identifier, config, expected_stage):
         if package.content_hash != news.content_hash:
             await enroll(session, [news.id])
             return
+        if settings is not None and not boundary(settings) <= news.published_at <= datetime.now(UTC):
+            return
+        if await session.scalar(select(Attempt.id).where(Attempt.package_id == identifier, Attempt.state == 'processing').limit(1)):
+            return
         source = article(news)
         source_hash = package.content_hash
         stage = "index" if package.state == "index_pending" else "assign"
@@ -566,12 +575,14 @@ async def _process_package(identifier, config, expected_stage):
                             existing.change_kind = target.change_kind
                         if target.change_kind != "repost" or event.result is None:
                             dirty(event, target.urgent)
+                            await mark_priority(session, event, news)
                     for old in previous:
                         if old.event_id not in assigned:
                             event = await session.get(
                                 Event, old.event_id, with_for_update=True
                             )
                             dirty(event)
+                            await mark_priority(session, event, news)
                             await session.delete(old)
                             affected[event.id] = event
                     package.state = "done"
@@ -805,6 +816,9 @@ def validate_timeline(result, package_news):
 
 async def process_event(identifier, config, force=False):
     async with SessionLocal() as session:
+        settings = await control(session, config)
+        if settings is False:
+            return
         event = await session.get(Event, identifier, with_for_update=True)
         if (
             event is None
@@ -812,6 +826,8 @@ async def process_event(identifier, config, force=False):
             or (not force and event.due_at > datetime.now(UTC))
         ):
             return
+        if await session.scalar(select(Version.id).where(Version.event_id == identifier, Version.state == 'processing').limit(1)):
+            return
         members = list(
             await session.execute(
                 select(Package, Membership, NewsItem)
@@ -821,6 +837,8 @@ async def process_event(identifier, config, force=False):
                 .order_by(Package.id)
             )
         )
+        if settings is not None and members and not any(boundary(settings) <= n.published_at <= datetime.now(UTC) for p, m, n in members):
+            return
         if not members:
             event.state = "retired"
             await session.commit()
@@ -859,6 +877,7 @@ async def process_event(identifier, config, force=False):
         )
         session.add(version)
         event.state = "processing"
+        event.dirty_since = None
         await session.commit()
         version_id, revision = version.id, event.revision
         researcher = Research(event={"id": identifier, "revision": revision})
@@ -977,6 +996,7 @@ async def process_event(identifier, config, force=False):
                     current.title = output.title
                     current.state = "done"
                     current.dirty_since = None
+                    current.realtime_pending = False
                     current.error = None
                     for ref in output.references:
                         session.add(

backend/src/alphapulse/news_research/worker.py

@@ -13,38 +13,42 @@ from alphapulse.news_research.models import (
     Batch, BatchEvent,
 )
 from alphapulse.news_research.service import process_package, process_event
-from alphapulse.news_research import batches
+from alphapulse.news_research import batches, scheduling
 
 logger = logging.getLogger(__name__)
 
 
+async def recover_interrupted():
+    async with SessionLocal() as session:
+        for stage in ("index", "assign"):
+            await session.execute(
+                update(Package)
+                .where(Package.state == stage + "_processing")
+                .values(state=stage + "_failed", error="进程中断，调用结果不明，请手动重试")
+            )
+        await session.execute(
+            update(Attempt)
+            .where(Attempt.state == "processing")
+            .values(state="failed", error="进程中断，调用结果不明，请手动重试")
+        )
+        await session.execute(
+            update(Event).where(Event.state == "processing").values(state="failed", error="进程中断，调用结果不明，请手动重试")
+        )
+        await session.execute(
+            update(Version)
+            .where(Version.state == "processing")
+            .values(state="failed", error="进程中断，调用结果不明，请手动重试")
+        )
+        await session.execute(update(BatchEvent).where(BatchEvent.state == 'processing').values(state='pending'))
+        await session.commit()
+
+
 async def run():
     async with engine.connect() as lock:
         if not await lock.scalar(text("SELECT pg_try_advisory_lock(20261030, 1)")):
             raise RuntimeError("新闻AI worker 已运行")
         await lock.commit()
-        async with SessionLocal() as session:
-            for stage in ("index", "assign"):
-                await session.execute(
-                    update(Package)
-                    .where(Package.state == stage + "_processing")
-                    .values(state=stage + "_pending")
-                )
-            await session.execute(
-                update(Attempt)
-                .where(Attempt.state == "processing")
-                .values(state="failed", error="进程中断，待重试")
-            )
-            await session.execute(
-                update(Event).where(Event.state == "processing").values(state="pending")
-            )
-            await session.execute(
-                update(Version)
-                .where(Version.state == "processing")
-                .values(state="failed", error="进程中断，待重试")
-            )
-            await session.execute(update(BatchEvent).where(BatchEvent.state == 'processing').values(state='pending'))
-            await session.commit()
+        await recover_interrupted()
         tasks = {}
         try:
             while True:
@@ -58,20 +62,21 @@ async def run():
                 async with SessionLocal() as session:
                     settings = await session.get(ResearchSettings, 1)
                     if settings and settings.enabled:
+                        active = set(tasks.values())
+                        slots = max(0, settings.config.get('concurrency', 3) - len(tasks))
+                        actions = await scheduling.realtime_actions(session, settings, active, slots)
                         batch = await session.scalar(select(Batch).where(
                             Batch.phase.in_(['assigning', 'researching'])).order_by(Batch.id).limit(1))
                         if batch is None:
                             batch = await batches.freeze(session, settings)
-                        settings = await session.get(ResearchSettings, 1, populate_existing=True, with_for_update=True)
-                        if batch is not None and settings.enabled:
-                            active = set(tasks.values())
-                            actions = await batches.actions(session, batch, active,
-                                max(0, settings.config.get('concurrency', 3) - len(tasks)))
-                            await session.commit()
-                            for stage, identifier in actions:
-                                call = (process_event(identifier, settings.config, force=True)
-                                        if stage == 'event' else process_package(identifier, settings.config))
-                                tasks[asyncio.create_task(call)] = (stage, identifier)
+                        if batch is not None:
+                            actions += await batches.actions(session, batch, active | set(actions), slots - len(actions), settings)
+                        await session.commit()
+                        config = {**settings.config, '_control_revision': settings.control_revision}
+                        for stage, identifier in actions:
+                            call = (process_event(identifier, config)
+                                    if stage == 'event' else process_package(identifier, config))
+                            tasks[asyncio.create_task(call)] = (stage, identifier)
                 await asyncio.sleep(1)
         finally:
             await asyncio.gather(*tasks, return_exceptions=True)

backend/tests/test_news_research_workspace.py

@@ -302,7 +302,7 @@ def test_failed_enable_does_not_save_the_selected_backfill_start(trading, monkey
     session = N(get=AsyncMock(return_value=row), scalar=AsyncMock(side_effect=[True, 0, 0]), commit=AsyncMock())
     monkeypatch.setattr(service, "model_config", AsyncMock(side_effect=ValueError("Skill 不可用")))
     with pytest.raises(HTTPException) as error:
-        asyncio.run(api.enable(session, api.EnableInput(start_at=previous - timedelta(days=30))))
+        asyncio.run(api.enable(session, api.EnableInput(start_at=previous)))
     assert error.value.status_code == 502
     assert row.start_at == previous and not row.enabled and row.control_revision == 7
     session.commit.assert_not_called()
@@ -842,6 +842,7 @@ def test_alias_adjustment_audit_survives_index_failures(trading, monkeypatch, fa
     session.get = AsyncMock(side_effect=lambda model, *args, **kwargs:
                             attempts[0] if model is Attempt else package if model is Package else news)
     session.execute = AsyncMock()
+    session.scalar = AsyncMock(return_value=None)
     monkeypatch.setattr(service, "SessionLocal", lambda: session)
     monkeypatch.setattr(service.vocab, "snapshot", AsyncMock(return_value={"entries": []}))
     monkeypatch.setattr(service, "model_config", AsyncMock(return_value=(None, "索引规则", {})))
@@ -903,3 +904,47 @@ def test_task_skill_keeps_custom_rules_and_accepts_crlf(trading):
     content = "## 归属规则\r\n自定义归属\r\n### 细则\r\n保留规则\r\n## 索引规则\r\n自定义索引"
     assert task_skill(content, "assign") == "自定义归属\n### 细则\n保留规则"
     assert task_skill(content, "index") == "自定义索引"
+
+
+def test_settings_save_atomically_pauses_and_preserves_model_contract(trading):
+    import asyncio
+    from unittest.mock import AsyncMock
+    from alphapulse.news_research import api
+    row = N(start_at=datetime(2026, 11, 4, 16, tzinfo=UTC), config={}, enabled=True, control_revision=3)
+    session = N(get=AsyncMock(return_value=row), commit=AsyncMock())
+    model = dict(provider_id=1, model='test', skill_id=1)
+    body = api.SettingsInput(index=model, research=model, start_at='2026-10-20T00:00:00+08:00', base_revision=3)
+    asyncio.run(api.save(body, session))
+    assert not row.enabled and row.control_revision == 4
+    assert row.start_at == datetime(2026, 10, 19, 16, tzinfo=UTC)
+    assert set(row.config) == {'index', 'research', 'concurrency'}
+    session.commit.assert_awaited_once()
+
+
+def test_settings_save_rejects_other_tabs_revision_without_changes(trading):
+    import asyncio
+    from unittest.mock import AsyncMock
+    from fastapi import HTTPException
+    from alphapulse.news_research import api
+    row = N(start_at=datetime(2026, 11, 4, 16, tzinfo=UTC), config={}, enabled=True, control_revision=4)
+    session = N(get=AsyncMock(return_value=row), commit=AsyncMock())
+    model = dict(provider_id=1, model='test', skill_id=1)
+    with pytest.raises(HTTPException) as error:
+        asyncio.run(api.save(api.SettingsInput(index=model, research=model, base_revision=3), session))
+    assert error.value.status_code == 409
+    assert row.enabled and row.control_revision == 4
+    session.commit.assert_not_awaited()
+
+
+def test_enable_cannot_apply_an_unsaved_backfill_time(trading):
+    import asyncio
+    from unittest.mock import AsyncMock
+    from fastapi import HTTPException
+    from alphapulse.news_research import api
+    row = N(start_at=datetime(2026, 11, 4, 16, tzinfo=UTC))
+    session = N(get=AsyncMock(return_value=row), scalar=AsyncMock(), commit=AsyncMock())
+    with pytest.raises(HTTPException) as error:
+        asyncio.run(api.enable(session, api.EnableInput(start_at='2026-10-20T00:00:00+08:00')))
+    assert error.value.status_code == 422
+    session.scalar.assert_not_awaited()
+    session.commit.assert_not_awaited()

deploy/README.md

@@ -455,3 +455,42 @@ some documents were imported: ECB dynamic index version coverage, inaccessible
 BoE speeches and CoinDesk access blocks are reported rather than labeled complete.
 The deployment lock serializes writes; crawler/calendar processes are restored in
 finally blocks. Do not start a second driver or remove its state to renew quotas.
+
+### Realtime priority and historical AI backfill
+
+Migration `dd4567890123` adds the persistent realtime boundary and pending-event
+priority, plus partial unique indexes for active package attempts and event
+versions. Pause and drain news AI before applying it; duplicate active records
+must be investigated rather than deleted to force migration success. Preserve
+originals, attempts and version history. Deployment requires the candidate's
+schema head and must leave automatic processing paused during verification.
+
+The model/Skills drawer saves the historical start time with model settings via
+**Save and pause**. New settings default to 2026-11-05 00:00 Asia/Shanghai; existing
+saved values remain intact. Settings responses expose `control_revision`,
+`realtime_from`, `timezone` and queue counts. PUT accepts optional `start_at` and
+`base_revision`; version conflicts return 409. Enable uses the saved start only;
+a differing legacy enable body returns 422. The first successful enable fixes
+`realtime_from`; later saves, pauses and restarts never move it.
+
+Publication time, not ingestion time, determines realtime membership. Realtime
+work takes the next available slot without cancelling accepted calls. Historical
+work uses batches of at most 30 originals, ordered chronologically. Saving a new
+start pauses dispatch; enabling after drain retires unfinished batch schedules
+and rebuilds from durable stage states without repeating successes. Shrinking
+history does not exclude realtime backlog. Known in-range dependencies inherit
+a waiting realtime event's priority. Out-of-range or failed members block event
+research without silently dropping evidence or retrying paid failures.
+
+Ordinary event research uses the existing five-minute quiet window with a
+15-minute maximum; urgent events become ready immediately. A running research
+call is not duplicated when newer members arrive. New changes start another
+aggregation window and obsolete output cannot overwrite current conclusions.
+After a worker interruption, started calls become failed with an unknown-result
+message and need manual retry; unclaimed work resumes normally. Strict realtime
+priority can starve historical work under sustained overload.
+
+CI additionally runs `scripts/smoke_priority_queue.py` in its disposable internal
+network with synthetic credentials and no model calls. It covers preemption,
+late historical ingestion, stable realtime eligibility, range changes,
+dependencies, aggregation, control revisions and interrupted-call recovery.

scripts/ci.py

@@ -182,6 +182,8 @@ def smoke(build, label):
                      'import urllib.request; urllib.request.urlopen("http://localhost:8000/api/health", timeout=3)')
         print(run('docker', 'exec', '-i', names['api'], 'python', '-',
                   input=(ROOT / 'scripts/smoke_news_batches.py').read_text()), flush=True)
+        print(run('docker', 'exec', '-i', names['api'], 'python', '-',
+                  input=(ROOT / 'scripts/smoke_priority_queue.py').read_text()), flush=True)
         print(run('docker', 'exec', '-i', names['api'], 'python', '-',
                   input=(ROOT / 'scripts/smoke_news_research.py').read_text()), flush=True)
         print(run('docker', 'exec', '-i', names['api'], 'python', '-',

scripts/smoke_news_batches.py

@@ -90,6 +90,7 @@ async def main():
     await backfill_regressions(now)
     await carryover_regressions(now)
     await regressions(now, settings)
+    await queue_review_regressions(now, settings)
     await engine.dispose()
     print('Frozen batches passed: assignment barrier, single research, failures, new arrivals, restart and source revisions.')
 
@@ -208,7 +209,13 @@ async def regressions(now, settings):
     async with SessionLocal() as s:
         event = Event(title='Deferred retry', tags=[], revision=7, state='pending', due_at=now)
         previous = Batch(phase='partial', cutoff_at=now)
-        s.add_all([event, previous])
+        original = NewsItem(source_code='wscn_news', external_id='retry-member', title='retry', summary='', content_text='retry', content_hash='a'*64, url='https://example.invalid/retry', published_at=now)
+        s.add_all([event, previous, original])
+        await s.flush()
+        member = Package(news_id=original.id, content_hash=original.content_hash, state='done', keywords=[])
+        s.add(member)
+        await s.flush()
+        s.add(Membership(event_id=event.id, package_id=member.id, evidence='retry', reason='retry', change_kind='new_fact'))
         await s.flush()
         s.add(BatchEvent(batch_id=previous.id, event_id=event.id, revision=7, state='deferred'))
         await s.commit()
@@ -236,39 +243,116 @@ async def regressions(now, settings):
         s.add_all([news, excluded])
         await s.commit()
         await service.enroll(s, [news.id])
-        batch = await batches.freeze(s, settings)
+        assert await batches.freeze(s, settings) is None
         package = await s.scalar(select(Package).where(Package.news_id == news.id))
         news.content_hash = 'b'*64
         await s.commit()
-        await batches.actions(s, batch, set(), 8)
-        await s.commit()
-        await batches.actions(s, batch, set(), 8)
-        await s.commit()
-        assert batch.phase == 'partial'
-        batch = await batches.freeze(s, settings)
-        assert package.content_hash == news.content_hash and package.state == 'index_pending'
-        assert await batches.actions(s, batch, set(), 8) == [('index', package.id)]
-        assert await s.scalar(select(func.count()).select_from(Package)) == 1
-        # A previously completed manual original also refreshes outside the automatic boundary.
-        package.state = 'done'
-        news.content_hash = 'c'*64
-        await s.commit()
-        await batches.freeze(s, settings)
+        assert await batches.freeze(s, settings) is None
+        assert package.content_hash != news.content_hash
+        expanded = SimpleNamespace(start_at=news.published_at)
+        batch = await batches.freeze(s, expanded)
         assert package.content_hash == news.content_hash and package.state == 'index_pending'
+        assert ('index', package.id) in await batches.actions(s, batch, set(), 8)
         await clear(s)
 
         count = 33000
         await s.execute(insert(NewsItem), [original('bulk-'+str(i), now) for i in range(count)])
         await s.commit()
         batch = await batches.freeze(s, settings)
-        assert await s.scalar(select(func.count()).select_from(BatchPackage).where(BatchPackage.batch_id == batch.id)) == count
-        assert await s.scalar(select(func.count()).select_from(Package)) == count
+        assert await s.scalar(select(func.count()).select_from(BatchPackage).where(BatchPackage.batch_id == batch.id)) == 30
+        assert await s.scalar(select(func.count()).select_from(Package)) == 30
         # Exercise the existing-pending-ID and membership arrays above the driver limit too.
         next_batch = await batches.freeze(s, settings)
-        assert await s.scalar(select(func.count()).select_from(BatchPackage).where(BatchPackage.batch_id == next_batch.id)) == count
+        assert await s.scalar(select(func.count()).select_from(BatchPackage).where(BatchPackage.batch_id == next_batch.id)) == 30
         assert len(await batches.actions(s, next_batch, set(), 8)) == 8
         await clear(s)
     print('Batch regressions passed: deferred retries, failed-evidence reuse, manual source revisions, and 33,000 originals without parameter overflow.')
 
 
+async def queue_review_regressions(now, settings):
+    async def clear(session):
+        await session.execute(text('TRUNCATE news_research_batches, news_research_packages, news_research_events, news_items CASCADE'))
+        await session.commit()
+
+    async with SessionLocal() as s:
+        news = NewsItem(source_code='wscn_news', external_id='review-barrier', title='historical',
+                        summary='', content_text='historical', content_hash='a'*64,
+                        url='https://example.invalid/review-barrier', published_at=now)
+        s.add(news)
+        await s.flush()
+        package = Package(news_id=news.id, content_hash=news.content_hash, state='assign_pending', keywords=[])
+        event = Event(title='historical event', tags=[], revision=1, state='pending', due_at=now)
+        batch = Batch(phase='assigning', cutoff_at=now)
+        s.add_all([package, event, batch])
+        await s.flush()
+        s.add(Membership(event_id=event.id, package_id=package.id,
+                         evidence='historical', reason='same event', change_kind='new_fact'))
+        s.add(BatchPackage(batch_id=batch.id, package_id=package.id, content_hash=package.content_hash, state='pending'))
+        await s.commit()
+        unrelated = package.id + 1000
+        # Assignment remains globally serial even when the other call is not in this batch.
+        assert await batches.actions(s, batch, {('assign', unrelated)}, 7) == []
+        assert batch.phase == 'assigning'
+        # Active work on this batch still holds its assignment barrier.
+        package.state = 'done'
+        await s.commit()
+        assert await batches.actions(s, batch, {('assign', package.id)}, 7) == []
+        assert batch.phase == 'assigning'
+        # Unrelated realtime package and event calls must not hold the barrier.
+        realtime = {('index', unrelated), ('event', event.id + 1000)}
+        assert await batches.actions(s, batch, realtime, 6) == []
+        await s.commit()
+        assert batch.phase == 'researching'
+        assert await batches.actions(s, batch, realtime, 6) == [('event', event.id)]
+        await s.commit()
+        event.state = 'done'
+        await s.commit()
+        # A completed result can be visible before the owning task has returned.
+        assert await batches.actions(s, batch, realtime | {('event', event.id)}, 5) == []
+        assert batch.phase == 'researching'
+        assert await batches.actions(s, batch, realtime | {('index', package.id)}, 5) == []
+        assert batch.phase == 'researching'
+        assert await batches.actions(s, batch, realtime, 6) == []
+        await s.commit()
+        assert batch.phase == 'done'
+        # Completed batches release admission of the next historical originals.
+        news2 = NewsItem(source_code='wscn_news', external_id='review-next', title='next', summary='',
+                         content_text='next', content_hash='b'*64,
+                         url='https://example.invalid/review-next', published_at=now)
+        s.add(news2)
+        await s.commit()
+        assert (await batches.freeze(s, settings)).id != batch.id
+        await clear(s)
+
+        # Thirty manual-only deferred heads cannot consume the thirty runnable slots.
+        news = NewsItem(source_code='wscn_news', external_id='review-deferred', title='source', summary='',
+                        content_text='source', content_hash='a'*64,
+                        url='https://example.invalid/review-deferred', published_at=now)
+        s.add(news)
+        await s.flush()
+        package = Package(news_id=news.id, content_hash=news.content_hash, state='done', keywords=[])
+        previous = Batch(phase='partial', cutoff_at=now)
+        events = [Event(title='deferred-head-'+str(i), tags=[], revision=7, state='pending',
+                        due_at=now-timedelta(minutes=35-i)) for i in range(35)]
+        s.add_all([package, previous, *events])
+        await s.flush()
+        for i, event in enumerate(events):
+            s.add(Membership(event_id=event.id, package_id=package.id, evidence='source', reason='same source', change_kind='new_fact'))
+            if i <= 30:
+                s.add(BatchEvent(batch_id=previous.id, event_id=event.id,
+                                 revision=7 if i < 30 else 6, state='deferred'))
+        await s.commit()
+        batch = await batches.freeze(s, settings)
+        assert batch is not None
+        selected = set(await s.scalars(select(BatchEvent.event_id).where(BatchEvent.batch_id == batch.id)))
+        assert selected == {event.id for event in events[30:]}, selected
+        assert all(event.state == 'pending' and event.revision == 7 for event in events[:30])
+        await batches.actions(s, batch, set(), 8)
+        await s.commit()
+        actions = await batches.actions(s, batch, set(), 8)
+        assert set(actions) == {('event', event.id) for event in events[30:]}
+        await clear(s)
+    print('Queue review regressions passed: unrelated realtime calls allow both batch barriers to advance, owning calls still block, assignment stays serial, and deferred heads cannot starve runnable events.')
+
+
 asyncio.run(main())

scripts/smoke_news_research.py

@@ -393,14 +393,20 @@ async def main():
             assert report.json()["data"]["start_at"] == "2026-09-30T16:00:00Z"
             assert set(report.json()["data"]["outside"]) == {"unprocessed", "stale", "pending", "processing", "failed"}
         assert (await client.get("/api/risk/settings")).json()["data"]["start_at"] == previous_start
+        assert (await client.post("/api/risk/enable", json={"start_at": selected_start})).status_code == 422
+        settings = (await client.get("/api/risk/settings")).json()["data"]
+        saved = await client.put("/api/risk/settings", json={**config, "start_at": selected_start, "base_revision": settings["control_revision"]})
+        assert saved.status_code == 200, saved.text
         with patch.object(model_service, "complete", validation):
-            response = await client.post("/api/risk/enable", json={"start_at": selected_start})
+            response = await client.post("/api/risk/enable")
             assert response.status_code == 200, response.text
             assert response.json()["data"]["start_at"] == "2026-09-30T16:00:00Z"
         assert (await client.get("/api/risk/settings")).json()["data"][
             "enabled"
         ] is True
         assert (await client.get("/api/risk/settings")).json()["data"]["start_at"] == "2026-09-30T16:00:00Z"
+        fixed_anchor = (await client.get("/api/risk/settings")).json()["data"]["realtime_from"]
+        assert fixed_anchor is not None
         assert (await client.post("/api/risk/enable")).status_code == 409
         assert (await client.post("/api/risk/pause")).status_code == 200
         for action in ("pause", "save"):
@@ -421,12 +427,13 @@ async def main():
                 return await validation(provider, skill, payload, schema)
 
             with patch.object(model_service, "complete", interrupted_validation):
-                response = await client.post("/api/risk/enable", json={"start_at": "2026-09-01T00:00:00Z"})
+                response = await client.post("/api/risk/enable")
                 assert response.status_code == 409, response.text
             assert (await client.get("/api/risk/settings")).json()["data"][
                 "enabled"
             ] is False
             assert (await client.get("/api/risk/settings")).json()["data"]["start_at"] == "2026-09-30T16:00:00Z"
+            assert (await client.get("/api/risk/settings")).json()["data"]["realtime_from"] == fixed_anchor
         package_id = (await client.get(f"/api/risk/news/{news_id}/packages")).json()[
             "data"
         ][0]["id"]

scripts/smoke_priority_queue.py

@@ -0,0 +1,107 @@
+"""Exercise preemption and recovery using disposable PostgreSQL, never a model."""
+import asyncio
+import os
+from datetime import UTC, datetime, timedelta
+from types import SimpleNamespace
+from urllib.parse import urlparse
+from sqlalchemy import select, text, func
+from sqlalchemy.exc import IntegrityError
+from unittest.mock import patch
+from alphapulse.core.db import SessionLocal, engine
+from alphapulse.models import NewsItem
+from alphapulse.news_research.models import Package, Event, Membership, Attempt, Version, ResearchSettings
+from alphapulse.news_research import scheduling, batches, service
+from alphapulse.news_research.worker import recover_interrupted
+
+
+async def main():
+    url = urlparse(os.environ['DATABASE_URL'])
+    assert (url.username, url.password, url.path) == ('ci', 'ci-only', '/ci')
+    now = datetime.now(UTC)
+    anchor = now - timedelta(hours=1)
+    config = SimpleNamespace(start_at=now-timedelta(days=5), realtime_from=anchor)
+    async with SessionLocal() as s:
+        assert await s.scalar(select(func.count()).select_from(Package)) == 0
+        def original(key, published):
+            return NewsItem(source_code='wscn_news', external_id='priority-'+key, title=key, summary='',
+                            content_text=key, content_hash='a'*64, url='https://example.invalid/'+key, published_at=published)
+        old = original('old', now-timedelta(days=4))
+        live = original('live', now-timedelta(minutes=30))
+        late = original('late', now-timedelta(days=3))
+        s.add_all([old, live, late]); await s.commit()
+        batch = await batches.freeze(s, config)
+        packages = list(await s.scalars(select(Package)))
+        assert len(packages) == 2 and all(p.news_id != live.id for p in packages)
+        actions = await scheduling.realtime_actions(s, config, {('index', packages[0].id)}, 1)
+        live_package = await s.scalar(select(Package).where(Package.news_id == live.id))
+        assert actions == [('index', live_package.id)]
+        assert await scheduling.realtime_actions(s, config, set(), 0) == []
+        # Shrinking the history range must not exclude accumulated realtime news.
+        config.start_at = now-timedelta(minutes=5)
+        actions = await scheduling.realtime_actions(s, config, set(), 1)
+        assert actions == [('index', live_package.id)]
+        await batches.actions(s, batch, set(), 8, config)
+        assert not await batches.freeze(s, config)
+        config.start_at = now-timedelta(days=5)
+        assert await batches.freeze(s, config)
+        assert packages[0].keywords == []
+        # A realtime event's historical dependencies inherit priority.
+        event = Event(title='shared', tags=[], state='pending', revision=1, realtime_pending=True, due_at=now)
+        s.add(event); await s.flush()
+        for p in [packages[0], live_package]:
+            s.add(Membership(event_id=event.id, package_id=p.id, evidence='fixture', reason='fixture', change_kind='new_fact'))
+        packages[0].state = 'assign_pending'
+        live_package.state = 'done'
+        await s.commit()
+        config.start_at = now-timedelta(minutes=5)
+        assert await scheduling.realtime_actions(s, config, set(), 1) == []
+        config.start_at = now-timedelta(days=5)
+        assert await scheduling.realtime_actions(s, config, set(), 1) == [('assign', packages[0].id)]
+        packages[0].state = 'done'; await s.commit()
+        assert await scheduling.realtime_actions(s, config, set(), 1) == [('event', event.id)]
+        event.due_at = now+timedelta(minutes=5); await s.commit()
+        assert ('event', event.id) not in await scheduling.realtime_actions(s, config, set(), 8)
+        # Pausing invalidates a selected but not-yet-claimed task.
+        s.add(ResearchSettings(id=1, config={}, enabled=False, control_revision=9, start_at=config.start_at, realtime_from=anchor))
+        await s.commit()
+        assert await scheduling.control(s, {'_control_revision': 8}) is False
+        await s.commit()
+        with patch.object(service, 'complete', side_effect=AssertionError('Paused selection must not call a model')):
+            await service.process_package(live_package.id, {'_control_revision': 8})
+        assert await s.scalar(select(func.count()).select_from(Attempt)) == 0
+        live_package = await s.get(Package, live_package.id)
+        live_package.state = 'index_processing'
+        s.add(Attempt(package_id=live_package.id, content_hash='a'*64, stage='index', state='processing', input={}, rules={}))
+        event = await s.get(Event, event.id); event.state='processing'
+        s.add(Version(event_id=event.id, revision=event.revision, state='processing', input={}, rules={}))
+        await s.commit()
+        for duplicate in [
+            Attempt(package_id=live_package.id, content_hash='a'*64, stage='assign', state='processing', input={}, rules={}),
+            Version(event_id=event.id, revision=event.revision, state='processing', input={}, rules={}),
+        ]:
+            try:
+                async with s.begin_nested():
+                    s.add(duplicate)
+                    await s.flush()
+            except IntegrityError:
+                pass
+            else:
+                raise AssertionError('Concurrent duplicate claim was accepted')
+    await recover_interrupted()
+    async with SessionLocal() as s:
+        assert (await s.get(Package, live_package.id)).state == 'index_failed'
+        assert (await s.get(Event, event.id)).state == 'failed'
+        assert await scheduling.realtime_actions(s, config, set(), 8) == []
+        empty = Event(title='removed members', tags=[], state='pending', revision=1, realtime_pending=True, due_at=now)
+        s.add(empty); await s.commit()
+        assert ('event', empty.id) in await scheduling.realtime_actions(s, config, set(), 8)
+        with patch.object(service.Research, 'run', side_effect=AssertionError('Empty events must not call a model')):
+            await service.process_event(empty.id, {})
+        await s.refresh(empty)
+        assert empty.state == 'retired'
+        await s.execute(text('TRUNCATE news_research_settings, news_research_batches, news_research_packages, news_research_events, news_items CASCADE'))
+        await s.commit()
+    await engine.dispose()
+    print('Priority queue passed: live preemption, stable boundary, late history, range changes, dependencies, aggregation, stale control and uncertain-call recovery.')
+
+asyncio.run(main())

web/src/common/apis/news-research/index.ts

@@ -2,8 +2,8 @@ import type * as Research from "./type"
 import { request } from "@/http/axios"
 
 export const getSettingsApi = () => request<Research.Settings>({ url: "/risk/settings", method: "get" })
-export const saveSettingsApi = (data: Research.Config) => request<null>({ url: "/risk/settings", method: "put", data })
-export const enableApi = (start_at: string) => request<Research.Coverage>({ url: "/risk/enable", method: "post", data: { start_at } })
+export const saveSettingsApi = (data: Research.Config & { start_at: string, base_revision: number }) => request<null>({ url: "/risk/settings", method: "put", data })
+export const enableApi = () => request<Research.Coverage>({ url: "/risk/enable", method: "post" })
 export const getCoverageApi = (start_at: string) => request<Research.Coverage>({ url: "/risk/coverage", method: "get", params: { start_at } })
 export const pauseApi = () => request<null>({ url: "/risk/pause", method: "post" })
 export const createSkillsApi = () => request<{ index: number, research: number }>({ url: "/risk/skill-templates", method: "post" })

web/src/common/apis/news-research/type.ts

@@ -2,13 +2,13 @@ export interface Keyword { canonical: string, aliases: string[], quote: string }
 export interface ModelConfig { provider_id: number | null, model: string, reasoning_effort: string | null, skill_id: number | null }
 export interface Config { index: ModelConfig, research: ModelConfig, concurrency: number }
 export interface BatchProgress { id: number, phase: string, cutoff_at: string, packages_total: number, packages_done: number, packages_failed: number, packages_deferred: number, events_total: number, events_done: number, events_failed: number, events_deferred: number }
-export interface Settings { batch?: BatchProgress | null, config: Partial<Config>, enabled: boolean, start_at: string }
+export interface Settings { control_revision: number, realtime_from: string | null, queue: { running: number, draining: boolean, realtime: Record<string, number>, backfill: Record<string, number> }, batch?: BatchProgress | null, config: Partial<Config>, enabled: boolean, start_at: string }
 export interface Coverage { start_at: string, checked_at: string, total: number, unprocessed: number, missing: number, stale: number, pending: number, processing: number, failed: number, completed: number, outside: { unprocessed: number, stale: number, pending: number, processing: number, failed: number } }
 export interface Package { id: number, news_id: number, title: string, url: string, state: string, error: string | null, keywords: Keyword[], events: { id: number, title: string, reason: string, quote: string }[] }
 export interface Point { time_precision: "minute" | "day" | "month" | "unknown", planned_precision: "minute" | "day" | "month" | "unknown", package_ids: number[], time_text: string, description: string, occurred_at: string | null, planned_at: string | null, reported_at: string | null, period_text: string, evidence_refs: { article_id: number, quote: string }[] }
 export interface Result { title: string, summary: string, facts: string, reasoning: string, uncertainty: string, opinions: string, counter_evidence: string, watchpoints: string, asset_impacts: string, importance_stars: number, risk_stars: number, confidence: string, verification: string, timeline_points: Point[] }
 export interface Event { id: number, title: string, state: string, revision: number, error: string | null, tags: string[], result: Result | null }
-export interface EventDetail extends Event { packages: Package[], references: { event_id: number, title: string, version_id: number, role: string, reason: string, changed: boolean }[], versions: { id: number, revision: number, state: string, result: Result | null, error: string | null, usage: unknown, evidence: unknown }[] }
+export interface EventDetail extends Event { wait_reason?: string | null, packages: Package[], references: { event_id: number, title: string, version_id: number, role: string, reason: string, changed: boolean }[], versions: { id: number, revision: number, state: string, result: Result | null, error: string | null, usage: unknown, evidence: unknown }[] }
 export interface PackageDetail extends Package { article: { title: string, summary: string, content: string }, attempts: { id: number, stage: string, state: string, error: string | null, output: unknown, usage: unknown }[] }
 
 export interface VocabularyEntry { canonical: string, aliases: string[] }

web/src/pages/home/index.vue

@@ -6,8 +6,15 @@ import * as api from "@@/apis/news-research"
 import { listProviderModelsApi, listProvidersApi } from "@@/apis/settings"
 import { listSkillTreeApi } from "@@/apis/skills"
 import { EFFORTS } from "@@/constants/ai"
+import dayjs from "dayjs"
+
+import timezone from "dayjs/plugin/timezone"
+import utc from "dayjs/plugin/utc"
 import { useUserStore } from "@/pinia/stores/user"
 
+dayjs.extend(utc)
+dayjs.extend(timezone)
+
 const vocabularyOpened = ref(false)
 const vocabulary = ref<Vocabulary>({ revision: 0, entries: [] })
 const vocabularyBusy = ref(false)
@@ -90,8 +97,19 @@ const settingsOpened = ref(false)
 const enabled = ref(false)
 const startAt = ref<Date | null>(null)
 const savedStartAt = ref<Date | null>(null)
+const settingsRevision = ref(0)
+const queue = ref<{ running: number, draining: boolean, realtime?: Record<string, number>, backfill?: Record<string, number> } | null>(null)
+function disabledBackfillDate(date: Date) {
+  return dayjs.tz(dayjs(date).format("YYYY-MM-DD"), "Asia/Shanghai").valueOf() > Date.now()
+}
+const startText = computed({
+  get: () => startAt.value ? dayjs(startAt.value).tz("Asia/Shanghai").format("YYYY-MM-DD HH:mm:ss") : "",
+  set: (value: string) => {
+    startAt.value = value ? dayjs.tz(value, "Asia/Shanghai").toDate() : null
+  }
+})
 const selectedStartAt = computed({
-  get: () => enabled.value ? savedStartAt.value : startAt.value,
+  get: () => enabled.value && !settingsOpened.value ? savedStartAt.value : startAt.value,
   set: (value: Date | null) => {
     startAt.value = value
   }
@@ -134,6 +152,7 @@ async function load() {
     const [settings, rows] = await Promise.all([api.getSettingsApi(), tab.value === "events" ? api.listEventsApi(q.value, page.value) : api.listPackagesApi(q.value, page.value)])
     if (!valid() || seq !== sequence) return
     enabled.value = settings.enabled
+    queue.value = settings.queue ?? null
     if (!startAt.value || startAt.value.getTime() === savedStartAt.value?.getTime()) startAt.value = new Date(settings.start_at)
     savedStartAt.value = new Date(settings.start_at)
     batch.value = settings.batch ?? null
@@ -166,13 +185,7 @@ async function checkCoverage() {
 }
 async function enable() {
   if (!valid()) return
-  if (!startAt.value || !Number.isFinite(startAt.value.getTime()) || startAt.value.getTime() > Date.now()) {
-    ElMessage.error("请选择不晚于当前时间的回补起始时间")
-    return
-  }
-  const start = startAt.value.toISOString()
-  const result = await api.enableApi(start)
-  if (valid() && selectedStartAt.value?.toISOString() === start) coverage.value = result
+  await api.enableApi()
 }
 async function openEvent(id: number) {
   eventId = id
@@ -248,6 +261,8 @@ async function settings() {
   providers.value = choices
   skills.value = nodes.filter(s => s.scope === "news" && s.kind === "skill")
   if (value.config.index && value.config.research) config.value = value.config as Config
+  startAt.value = new Date(value.start_at)
+  settingsRevision.value = value.control_revision
   settingsOpened.value = true
 }
 async function action(fn: () => Promise<unknown>) {
@@ -275,7 +290,12 @@ async function retryPackage() {
   if (id) await action(() => api.retryPackageApi(id))
 }
 async function save() {
-  await action(() => api.saveSettingsApi(config.value))
+  if (!valid() || busy.value) return
+  if (!startAt.value || !Number.isFinite(startAt.value.getTime()) || startAt.value.getTime() > Date.now()) {
+    ElMessage.error("请选择不晚于当前时间的回补起始时间")
+    return
+  }
+  await action(() => api.saveSettingsApi({ ...config.value, start_at: startAt.value!.toISOString(), base_revision: settingsRevision.value }))
   if (valid()) settingsOpened.value = false
 }
 async function prepareSkills() {
@@ -364,7 +384,7 @@ onBeforeUnmount(() => {
       <el-button @click="settings">
         模型与 Skills
       </el-button>
-      <el-button :loading="busy" :disabled="!enabled && (loading || error || !startAt)" @click="action(enabled ? api.pauseApi : enable)">
+      <el-button :loading="busy" :disabled="!enabled && (loading || error || queue?.draining)" @click="action(enabled ? api.pauseApi : enable)">
         {{ enabled ? '暂停新任务' : '启用两阶段处理' }}
       </el-button>
       <el-button @click="openVocabulary">
@@ -377,45 +397,20 @@ onBeforeUnmount(() => {
     <p class="mb-4 text-sm text-slate-500">
       新闻包保存原文和关键词；事件汇集相关报道，持续更新判断与时间线。
     </p>
-    <div class="mb-4 rounded border border-slate-200 p-3">
-      <div class="flex flex-wrap items-center gap-3">
-        <label for="research-start-at">回补起始时间</label>
-        <el-date-picker
-          id="research-start-at"
-          v-model="selectedStartAt"
-          type="datetime"
-          :clearable="false"
-          :disabled="enabled || busy"
-          :disabled-date="(date: Date) => date.getTime() > Date.now()"
-          placeholder="选择回补起始时间"
-        />
-        <span class="text-sm text-slate-500">按浏览器本地时区</span>
-        <el-button :loading="coverageLoading" :disabled="!startAt || busy" @click="checkCoverage">
-          核查遗漏
-        </el-button>
-      </div>
-      <p class="mt-2 text-sm text-slate-500">
-        启用时保存起点，自动核查并补齐该时间以来已采集的新闻；先完成关键词与归属，再集中研究事件。调整起点不会取消已有队列。
-      </p>
-      <p v-if="coverage" class="mt-2 text-sm">
-        范围内 {{ coverage.total }} 条，全部阶段已完成 {{ coverage.completed }} 条，未完成 {{ coverage.unprocessed }} 条：
-        未入队 {{ coverage.missing }}，原文更新需重判 {{ coverage.stale }}，待处理 {{ coverage.pending }}，处理中 {{ coverage.processing }}，失败 {{ coverage.failed }}。
-        失败项需手动重试，当前批次以外的遗漏排入下一批。
-      </p>
-      <p v-if="coverage && coverage.outside.unprocessed" class="mt-2 text-sm text-amber-700">
-        范围外另有已入队但未完成的新闻 {{ coverage.outside.unprocessed }} 条：
-        原文更新需重判 {{ coverage.outside.stale }}，待处理 {{ coverage.outside.pending }}，处理中 {{ coverage.outside.processing }}，失败 {{ coverage.outside.failed }}。
-        已有任务继续按批次处理，失败项需手动重试。
-      </p>
-      <p v-if="coverageError" class="mt-2 text-sm text-red-600">
-        核查失败，请重试。
-      </p>
-    </div>
+    <p class="mb-4 text-sm text-slate-500">
+      实时任务优先取得空闲并发；历史回补至 {{ savedStartAt ? dayjs(savedStartAt).tz("Asia/Shanghai").format("YYYY-MM-DD HH:mm:ss") : '—' }}（北京时间）。
+      <span v-if="queue?.draining">正在完成 {{ queue.running }} 个已接收调用，收尾后可重新启用。</span>
+    </p>
+    <p v-if="queue" class="mb-4 text-sm text-slate-500">
+      实时队列：等待索引 {{ queue.realtime?.index_pending ?? 0 }}，等待归属 {{ queue.realtime?.assign_pending ?? 0 }}；
+      回补队列：等待索引 {{ queue.backfill?.index_pending ?? 0 }}，等待归属 {{ queue.backfill?.assign_pending ?? 0 }}。
+      正在调用 {{ queue.running }}；范围外暂停、失败和中断结果不明的任务不会自动重试。
+    </p>
     <p v-if="batch" class="mb-4 text-sm text-slate-500">
       批次 #{{ batch.id }} · {{ batchPhases[batch.phase] ?? batch.phase }} ·
       新闻归属 {{ batch.packages_done }}/{{ batch.packages_total }}，失败 {{ batch.packages_failed }}，延期 {{ batch.packages_deferred }} ·
       事件研究 {{ batch.events_done }}/{{ batch.events_total }}，失败 {{ batch.events_failed }}，延期 {{ batch.events_deferred }}。
-      新新闻和重试请求排入下一批，研究仅使用站内资料。
+      实时任务可中途插队；回补任务分批归属后集中研究，研究仅使用站内资料。
     </p>
     <el-alert v-if="error" title="读取失败，保留上次结果，可刷新重试" type="error" :closable="false" />
     <div class="mb-4 flex flex-wrap gap-3">
@@ -474,6 +469,9 @@ onBeforeUnmount(() => {
     <el-drawer v-model="opened" title="事件研究与时间线" size="min(820px, 100vw)">
       <el-alert v-if="detailError" title="事件详情读取失败，请重新打开重试" type="error" :closable="false" />
       <template v-if="detail">
+        <p v-if="detail.wait_reason" class="mb-3 text-amber-700">
+          {{ detail.wait_reason }}
+        </p>
         <h2>{{ detail.title }}</h2><p>{{ states[detail.state] ?? detail.state }}</p>
         <el-button :loading="busy" @click="retryEvent">
           重新研究
@@ -627,6 +625,42 @@ onBeforeUnmount(() => {
     </el-drawer>
     <el-drawer v-model="settingsOpened" title="两阶段模型与 Skills" size="min(640px, 100vw)">
       <el-form label-position="top">
+        <div class="mb-4 rounded border border-slate-200 p-3">
+          <div class="flex flex-wrap items-center gap-3">
+            <label for="research-start-at">回补起始时间</label>
+            <el-date-picker
+              id="research-start-at"
+              v-model="startText"
+              value-format="YYYY-MM-DD HH:mm:ss"
+              type="datetime"
+              :clearable="false"
+              :disabled="busy"
+              :disabled-date="disabledBackfillDate"
+              placeholder="选择回补起始时间"
+            />
+            <span class="text-sm text-slate-500">北京时间（系统时区 UTC+8）</span>
+            <el-button :loading="coverageLoading" :disabled="!startAt || busy" @click="checkCoverage">
+              核查遗漏
+            </el-button>
+          </div>
+          <p class="mt-2 text-sm text-slate-500">
+            点击“保存并暂停”后生效；重新启用时重排未完成任务。实时新闻优先插队，历史新闻分批补齐。
+          </p>
+          <p v-if="coverage" class="mt-2 text-sm">
+            范围内 {{ coverage.total }} 条，全部阶段已完成 {{ coverage.completed }} 条，未完成 {{ coverage.unprocessed }} 条：
+            未入队 {{ coverage.missing }}，原文更新需重判 {{ coverage.stale }}，待处理 {{ coverage.pending }}，处理中 {{ coverage.processing }}，失败 {{ coverage.failed }}。
+            失败项需手动重试，当前批次以外的遗漏排入下一批。
+          </p>
+          <p v-if="coverage && coverage.outside.unprocessed" class="mt-2 text-sm text-amber-700">
+            范围外已暂停自动处理的新闻 {{ coverage.outside.unprocessed }} 条：
+            原文更新需重判 {{ coverage.outside.stale }}，待处理 {{ coverage.outside.pending }}，处理中 {{ coverage.outside.processing }}，失败 {{ coverage.outside.failed }}。
+            已接收调用允许完成，扩大范围后恢复尚未完成的阶段；失败项需手动重试。
+          </p>
+          <p v-if="coverageError" class="mt-2 text-sm text-red-600">
+            核查失败，请重试。
+          </p>
+        </div>
+
         <template v-for="stage in (['index', 'research'] as const)" :key="stage">
           <h3>{{ stage === 'index' ? '第一阶段：关键词索引与事件归属' : '第二阶段：事件整体研究' }}</h3>
           <el-form-item label="模型接入">

web/tests/workspaces.test.ts

@@ -485,7 +485,7 @@ test("新闻列表只更新可见条目的匹配版本评级，保留滚动与
 
 function researchPage(api: Record<string, unknown> = {}, user = vue.reactive({ sessionVersion: 1 }), extra: Record<string, unknown> = {}, dependencies: Record<string, unknown> = {}) {
   const load = moduleLoader({
-    "@@/apis/news-research": { getSettingsApi: async () => ({ config: {}, enabled: false, start_at: "2026-10-31T16:00:00Z" }), getCoverageApi: async (start_at: string) => ({ start_at, total: 0 }), listEventsApi: async () => ({ items: [], total: 0 }), listPackagesApi: async () => ({ items: [], total: 0 }), ...api },
+    "@@/apis/news-research": { getSettingsApi: async () => ({ config: {}, control_revision: 0, enabled: false, start_at: "2026-10-31T16:00:00Z" }), getCoverageApi: async (start_at: string) => ({ start_at, total: 0 }), listEventsApi: async () => ({ items: [], total: 0 }), listPackagesApi: async () => ({ items: [], total: 0 }), ...api },
     "@@/apis/skills": { listSkillTreeApi: async () => [] },
     "@@/apis/settings": { listProvidersApi: async () => [], listProviderModelsApi: async () => [] },
     "@/pinia/stores/user": { useUserStore: () => user },
@@ -516,11 +516,11 @@ test("回补时间按时区提交，刷新保留未提交的起点，核查不
   assert.equal(enabled.length, 0)
   assert.equal(page.coverage.value.missing, 4)
   await page.enable()
-  assert.deepEqual(enabled, ["2026-09-30T16:00:00.000Z"])
+  assert.deepEqual(enabled, [undefined])
 })
 
 test("其他标签页启用后按实际起点核查，暂停后恢复草稿并丢弃旧范围响应", async () => {
-  let server = { config: {}, enabled: false, start_at: "2026-10-31T16:00:00Z" }
+  let server = { config: {}, control_revision: 0, enabled: false, start_at: "2026-10-31T16:00:00Z" }
   const pending = Promise.withResolvers()
   const checked: string[] = []
   let delayDraft = true
@@ -612,13 +612,13 @@ test("切换会话后，旧回补核查不能恢复统计结果", async () => {
   assert.equal(page.startAt.value, null)
 })
 
-test("回补时间无效或晚于当前时间时禁止启用", async () => {
+test("回补时间无效或晚于当前时间时禁止保存", async () => {
   let calls = 0
   const errors: string[] = []
-  const page = researchPage({ enableApi: async () => calls++ }, undefined, { ElMessage: { error: (message: string) => errors.push(message) } })
+  const page = researchPage({ saveSettingsApi: async () => calls++ }, undefined, { ElMessage: { error: (message: string) => errors.push(message) } })
   for (const value of [null, new Date("invalid"), new Date(Date.now() + 86400000)]) {
     page.startAt.value = value
-    await page.enable()
+    await page.save()
   }
   assert.equal(calls, 0)
   assert.equal(errors.length, 3)
@@ -718,12 +718,15 @@ test("两阶段保存各自思考强度，不提交第三阶段配置", async ()
   const page = researchPage({ saveSettingsApi: async (data: unknown) => {
     saved = JSON.parse(JSON.stringify(data))
   } })
+  await page.load()
   page.config.value.index.reasoning_effort = "low"
   page.config.value.research.reasoning_effort = "high"
   await page.save()
   assert.equal(saved.index.reasoning_effort, "low")
   assert.equal(saved.research.reasoning_effort, "high")
-  assert.equal(Object.keys(saved).length, 3)
+  assert.equal(Object.keys(saved).length, 5)
+  assert.equal(saved.start_at, "2026-10-31T16:00:00.000Z")
+  assert.equal(saved.base_revision, 0)
   page.config.value.research.reasoning_effort = null
   await page.save()
   assert.equal(saved.research.reasoning_effort, null)
@@ -756,6 +759,7 @@ test("两阶段操作拒绝重复提交和旧会话操作，失败保留配置
     calls++
     return pending.promise
   } }, user)
+  await page.load()
   page.config.value.index.model = "draft"
   const first = page.save()
   await page.save()
@@ -964,3 +968,27 @@ test("词库保存拒绝重复提交，关闭后的响应不覆盖草稿，失
   assert.equal(page.vocabularyOpened.value, true)
   assert.equal(page.vocabularyBusy.value, false)
 })
+
+test("侧栏时间统一使用北京时间，保存时间与配置版本但启用不提交草稿", async () => {
+  let saved: any
+  let enableArgs: unknown[] = []
+  const page = researchPage({
+    getSettingsApi: async () => ({ config: {}, enabled: true, control_revision: 7, start_at: "2026-11-04T16:00:00Z" }),
+    saveSettingsApi: async (value: unknown) => {
+      saved = value
+    },
+    enableApi: async (...args: unknown[]) => {
+      enableArgs = args
+    }
+  })
+  await page.settings()
+  assert.equal(page.startText.value, "2026-11-05 00:00:00")
+  page.startText.value = "2026-10-20 00:00:00"
+  await page.load()
+  assert.equal(page.startText.value, "2026-10-20 00:00:00")
+  await page.save()
+  assert.equal(saved.start_at, "2026-10-19T16:00:00.000Z")
+  assert.equal(saved.base_revision, 7)
+  await page.enable()
+  assert.deepEqual(enableArgs, [])
+})