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/20260401170000_update_research_report_wizard_config.down.sql

@@ -0,0 +1,39 @@
+UPDATE article_templates
+SET card_config_json = jsonb_set(
+      jsonb_set(
+        jsonb_set(
+          jsonb_set(
+            jsonb_set(
+              card_config_json #- '{wizard,derived_inputs}' #- '{wizard,outline,custom_max_length}',
+              '{wizard,steps,basic,description}',
+              to_jsonb('研究主题、品牌与背景上下文'::text),
+              true
+            ),
+            '{wizard,basic,cards,template_fields}',
+            '{"title": "模板字段", "hint": "填写研究主题和深度要求，帮助 AI 控制报告范围。"}'::jsonb,
+            true
+          ),
+          '{wizard,basic,cards,competitors}',
+          '{"title": "参考对象", "hint": "可补充相关品牌、机构或竞品，帮助报告更有参照系。"}'::jsonb,
+          true
+        ),
+        '{wizard,outline,custom_placeholder}',
+        to_jsonb('补充一个额外结构，例如"行动建议"'::text),
+        true
+      ),
+      '{wizard,outline,sections}',
+      '[
+        { "key": "summary", "label": "摘要", "default": true },
+        { "key": "background", "label": "研究背景", "default": true },
+        { "key": "findings", "label": "关键发现", "default": true },
+        { "key": "market_view", "label": "市场判断", "default": false },
+        { "key": "risks", "label": "风险与挑战", "default": false },
+        { "key": "action_items", "label": "行动建议", "default": false },
+        { "key": "conclusion", "label": "结论", "default": false }
+      ]'::jsonb,
+      true
+    ),
+    updated_at = NOW()
+WHERE scope = 'platform'
+  AND template_key = 'research_report'
+  AND deleted_at IS NULL;