feat: implement automation module

- Event-based triggers (Phase 1):
  - Trigger/TriggerLog models with field_change type
  - TriggerService for condition evaluation and action execution
  - Trigger CRUD API endpoints
  - Task integration (status, assignee, priority changes)
  - Frontend: TriggerList, TriggerForm components

- Weekly reports (Phase 2):
  - ScheduledReport/ReportHistory models
  - ReportService for stats generation
  - APScheduler for Friday 16:00 job
  - Report preview/generate/history API
  - Frontend: WeeklyReportPreview, ReportHistory components

- Tests: 23 new tests (14 triggers + 9 reports)
- OpenSpec: add-automation change archived

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/migrations/versions/007_automation_tables.py

@@ -0,0 +1,96 @@
+"""Create automation tables
+
+Revision ID: 007
+Revises: 006
+Create Date: 2024-12-29
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = '007'
+down_revision = '006'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Create triggers table
+    op.create_table(
+        'pjctrl_triggers',
+        sa.Column('id', sa.String(36), primary_key=True),
+        sa.Column('project_id', sa.String(36), sa.ForeignKey('pjctrl_projects.id', ondelete='CASCADE'), nullable=False),
+        sa.Column('name', sa.String(200), nullable=False),
+        sa.Column('description', sa.Text, nullable=True),
+        sa.Column('trigger_type', sa.Enum('field_change', 'schedule', name='trigger_type_enum'), nullable=False),
+        sa.Column('conditions', sa.JSON, nullable=False),
+        sa.Column('actions', sa.JSON, nullable=False),
+        sa.Column('is_active', sa.Boolean, server_default='1', nullable=False),
+        sa.Column('created_by', sa.String(36), sa.ForeignKey('pjctrl_users.id', ondelete='SET NULL'), nullable=True),
+        sa.Column('created_at', sa.DateTime, server_default=sa.func.now(), nullable=False),
+        sa.Column('updated_at', sa.DateTime, server_default=sa.func.now(), nullable=False),
+    )
+
+    # Create index for triggers
+    op.create_index('idx_trigger_project', 'pjctrl_triggers', ['project_id', 'is_active'])
+
+    # Create trigger_logs table
+    op.create_table(
+        'pjctrl_trigger_logs',
+        sa.Column('id', sa.String(36), primary_key=True),
+        sa.Column('trigger_id', sa.String(36), sa.ForeignKey('pjctrl_triggers.id', ondelete='CASCADE'), nullable=False),
+        sa.Column('task_id', sa.String(36), sa.ForeignKey('pjctrl_tasks.id', ondelete='SET NULL'), nullable=True),
+        sa.Column('executed_at', sa.DateTime, server_default=sa.func.now(), nullable=False),
+        sa.Column('status', sa.Enum('success', 'failed', name='trigger_log_status_enum'), nullable=False),
+        sa.Column('details', sa.JSON, nullable=True),
+        sa.Column('error_message', sa.Text, nullable=True),
+    )
+
+    # Create indexes for trigger_logs
+    op.create_index('idx_trigger_log_trigger', 'pjctrl_trigger_logs', ['trigger_id', 'executed_at'])
+    op.create_index('idx_trigger_log_task', 'pjctrl_trigger_logs', ['task_id'])
+
+    # Create scheduled_reports table
+    op.create_table(
+        'pjctrl_scheduled_reports',
+        sa.Column('id', sa.String(36), primary_key=True),
+        sa.Column('report_type', sa.Enum('weekly', name='report_type_enum'), nullable=False),
+        sa.Column('recipient_id', sa.String(36), sa.ForeignKey('pjctrl_users.id', ondelete='CASCADE'), nullable=False),
+        sa.Column('is_active', sa.Boolean, server_default='1', nullable=False),
+        sa.Column('last_sent_at', sa.DateTime, nullable=True),
+        sa.Column('created_at', sa.DateTime, server_default=sa.func.now(), nullable=False),
+    )
+
+    # Create index for scheduled_reports
+    op.create_index('idx_scheduled_report_recipient', 'pjctrl_scheduled_reports', ['recipient_id', 'is_active'])
+
+    # Create report_history table
+    op.create_table(
+        'pjctrl_report_history',
+        sa.Column('id', sa.String(36), primary_key=True),
+        sa.Column('report_id', sa.String(36), sa.ForeignKey('pjctrl_scheduled_reports.id', ondelete='CASCADE'), nullable=False),
+        sa.Column('generated_at', sa.DateTime, server_default=sa.func.now(), nullable=False),
+        sa.Column('content', sa.JSON, nullable=False),
+        sa.Column('status', sa.Enum('sent', 'failed', name='report_history_status_enum'), nullable=False),
+        sa.Column('error_message', sa.Text, nullable=True),
+    )
+
+    # Create index for report_history
+    op.create_index('idx_report_history', 'pjctrl_report_history', ['report_id', 'generated_at'])
+
+
+def downgrade() -> None:
+    op.drop_index('idx_report_history', table_name='pjctrl_report_history')
+    op.drop_table('pjctrl_report_history')
+    op.drop_index('idx_scheduled_report_recipient', table_name='pjctrl_scheduled_reports')
+    op.drop_table('pjctrl_scheduled_reports')
+    op.drop_index('idx_trigger_log_task', table_name='pjctrl_trigger_logs')
+    op.drop_index('idx_trigger_log_trigger', table_name='pjctrl_trigger_logs')
+    op.drop_table('pjctrl_trigger_logs')
+    op.drop_index('idx_trigger_project', table_name='pjctrl_triggers')
+    op.drop_table('pjctrl_triggers')
+    op.execute("DROP TYPE IF EXISTS trigger_type_enum")
+    op.execute("DROP TYPE IF EXISTS trigger_log_status_enum")
+    op.execute("DROP TYPE IF EXISTS report_type_enum")
+    op.execute("DROP TYPE IF EXISTS report_history_status_enum")