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/configs/config.local.yaml.example

@@ -25,6 +25,9 @@ llm:
   timeout: 2m
   max_output_tokens: 4000
   temperature: 0.7
+  reasoning_effort: minimal
+  web_search_limit: 3
+  # top_p: 0.95
   # Prefer environment override for secrets:
   # export LLM_API_KEY=your-api-key
 
@@ -32,3 +35,4 @@ generation:
   queue_size: 128
   worker_concurrency: 1
   stream_enabled: false
+  article_timeout: 8m