feat: organize news packages into verified event timelines

Add optional events, evidence-backed timelines, versioned package corrections and bounded historical reprocessing. Keep independent packages readable and isolate retries by failed stage. Configure reasoning effort per model stage and refresh default news Skill drafts without publishing.

backend/alembic/versions/20261101_d4e6f8012345_news_events.py

@@ -0,0 +1,55 @@
+"""Add event timelines, grouping history and explicit reprocessing jobs."""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import JSONB
+
+revision = 'd4e6f8012345'
+down_revision = 'c3d5e7f90123'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('news_ai_summaries', sa.Column('review_config', JSONB))
+    op.add_column('news_ai_summaries', sa.Column('replacement_ids', JSONB, nullable=False, server_default='[]'))
+    op.add_column('news_ai_summary_articles', sa.Column('active', sa.Boolean, nullable=False, server_default=sa.true()))
+    op.add_column('news_ai_summary_articles', sa.Column('unit', JSONB, nullable=True))
+    op.create_table('news_ai_events', sa.Column('id', sa.BigInteger, primary_key=True), sa.Column('title', sa.Text, nullable=False),
+        sa.Column('state', sa.String(16), nullable=False), sa.Column('revision', sa.Integer, nullable=False), sa.Column('published_revision', sa.Integer, nullable=False),
+        sa.Column('result', JSONB), sa.Column('error', sa.Text), sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+        sa.Column('due_at', sa.DateTime(timezone=True), nullable=False), sa.Column('review_config', JSONB))
+    op.create_index('ix_news_ai_events_due_at', 'news_ai_events', ['due_at'])
+    op.create_table('news_ai_event_members', sa.Column('package_id', sa.BigInteger, sa.ForeignKey('news_ai_summaries.id'), primary_key=True),
+        sa.Column('event_id', sa.BigInteger, sa.ForeignKey('news_ai_events.id'), nullable=False), sa.Column('reason', sa.Text, nullable=False))
+    op.create_index('ix_news_ai_event_members_event_id', 'news_ai_event_members', ['event_id'])
+    op.create_table('news_ai_event_versions', sa.Column('id', sa.BigInteger, primary_key=True),
+        sa.Column('event_id', sa.BigInteger, sa.ForeignKey('news_ai_events.id'), nullable=False), sa.Column('revision', sa.Integer, nullable=False),
+        sa.Column('input', JSONB, nullable=False), sa.Column('result', JSONB), sa.Column('rules', JSONB, nullable=False),
+        sa.Column('state', sa.String(16), nullable=False), sa.Column('error', sa.Text), sa.Column('usage', JSONB),
+        sa.Column('created_at', sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()))
+    op.create_index('ix_news_ai_event_versions_event_id', 'news_ai_event_versions', ['event_id'])
+    op.create_table('news_ai_grouping_versions', sa.Column('id', sa.BigInteger, primary_key=True),
+        sa.Column('analysis_id', sa.BigInteger, sa.ForeignKey('news_ai_article_analyses.id'), nullable=False),
+        sa.Column('input', JSONB, nullable=False), sa.Column('result', JSONB), sa.Column('rules', JSONB),
+        sa.Column('state', sa.String(16), nullable=False), sa.Column('error', sa.Text),
+        sa.Column('created_at', sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()))
+    op.create_index('ix_news_ai_grouping_versions_analysis_id', 'news_ai_grouping_versions', ['analysis_id'])
+    op.execute('INSERT INTO news_ai_grouping_versions (analysis_id,input,result,rules,state,error) SELECT id,input,result,rules,state,error FROM news_ai_article_analyses')
+    op.create_table('news_ai_package_corrections', sa.Column('id', sa.BigInteger, primary_key=True),
+        sa.Column('fingerprint', sa.String(64), nullable=False, unique=True), sa.Column('input', JSONB, nullable=False),
+        sa.Column('result', JSONB, nullable=False), sa.Column('created_at', sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()))
+    op.create_table('news_ai_reprocess_jobs', sa.Column('id', sa.BigInteger, primary_key=True), sa.Column('state', sa.String(16), nullable=False),
+        sa.Column('settings', JSONB, nullable=False), sa.Column('items', JSONB, nullable=False), sa.Column('position', sa.Integer, nullable=False),
+        sa.Column('failures', JSONB, nullable=False), sa.Column('created_at', sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()))
+    op.create_index('ix_news_ai_reprocess_jobs_state', 'news_ai_reprocess_jobs', ['state'])
+    op.create_table('news_ai_event_links', sa.Column('package_id', sa.BigInteger, sa.ForeignKey('news_ai_summaries.id'), primary_key=True), sa.Column('event_id', sa.BigInteger, sa.ForeignKey('news_ai_events.id'), primary_key=True), sa.Column('reason', sa.Text, nullable=False), sa.Column('package_revision', sa.Integer, nullable=False))
+    op.execute('UPDATE risk_settings SET enabled=false')
+
+
+def downgrade():
+    for table in ('news_ai_event_links', 'news_ai_reprocess_jobs', 'news_ai_package_corrections', 'news_ai_grouping_versions', 'news_ai_event_versions', 'news_ai_event_members', 'news_ai_events'):
+        op.drop_table(table)
+    op.drop_column('news_ai_summary_articles', 'unit')
+    op.drop_column('news_ai_summary_articles', 'active')
+    op.drop_column('news_ai_summaries', 'replacement_ids')
+    op.drop_column('news_ai_summaries', 'review_config')