feat(migrations): Harden task audit tracking and optimize article templates

- Added migration to harden task audit tracking by modifying audit_logs and related tables.
- Introduced operator_id to several tables for better tracking of actions.
- Updated article_templates with new prompt templates for various article types, enhancing content generation.
- Created prompt_rules and schedule_tasks tables to manage content generation rules and scheduling.
- Added foreign key constraints to articles for better data integrity.

server/migrations/20260401130000_backfill_template_wizard_configs.down.sql

@@ -0,0 +1,31 @@
+UPDATE article_templates
+SET prompt_template = 'Write a Top {{count}} article about {{topic}}. Include brief descriptions for each item.',
+    card_config_json = '{}'::jsonb,
+    updated_at = NOW()
+WHERE scope = 'platform'
+  AND template_key = 'top_x_article'
+  AND deleted_at IS NULL;
+
+UPDATE article_templates
+SET prompt_template = 'Write a comprehensive product review for {{product_name}} in the {{category}} category.',
+    card_config_json = '{}'::jsonb,
+    updated_at = NOW()
+WHERE scope = 'platform'
+  AND template_key = 'product_review'
+  AND deleted_at IS NULL;
+
+UPDATE article_templates
+SET prompt_template = 'Write a {{depth}} research report about {{subject}}.',
+    card_config_json = '{}'::jsonb,
+    updated_at = NOW()
+WHERE scope = 'platform'
+  AND template_key = 'research_report'
+  AND deleted_at IS NULL;
+
+UPDATE article_templates
+SET prompt_template = 'Expand on the search query ''{{brand}} {{keyword}}'' with a comprehensive article.',
+    card_config_json = '{}'::jsonb,
+    updated_at = NOW()
+WHERE scope = 'platform'
+  AND template_key = 'brand_search_expansion'
+  AND deleted_at IS NULL;