配置全面迁移数据库：PromptConfig、TaskConfig动态调度、敏感词/清洗规则/趋势映射/平台标签/痛点模板全部可编辑

- 新增 PromptConfig 模型 + API，支持提示词在线编辑（16条默认）
- 调度器动态读取 TaskConfig.schedule，admin 可调执行时间
- 新增 KeywordDomainMap、SensitiveWord、ContentCleanRule、TrendFieldMapping 表
- DOMAINS、TREND_DOMAIN_MAP、PLATFORM_TAGS、china_pains、RSS关键词、priority_weights 全部迁移到 DB
- tasks.html 重构：卡片网格+配置/产出/历史/提示词四个Tab，折叠显示
- 清理冗余代码：DEFAULT_PROMPTS死代码、collector.py unreachable代码、compliance_checker bug
- strip_thinking_html 改用 DB 规则优先

scripts/opencode_search.py

@@ -16,8 +16,10 @@ sys.path.insert(0, str(PROJECT_ROOT))
 
 LOGS_DIR = PROJECT_ROOT / "automation" / "logs"
 TODAY = datetime.datetime.now().strftime("%Y-%m-%d")
+LOG_FILE = LOGS_DIR / f"opencode_search_{TODAY}.log"
 
-logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    handlers=[logging.FileHandler(LOG_FILE, encoding='utf-8'), logging.StreamHandler()])
 logger = logging.getLogger(__name__)
 
 SEARCH_CACHE_FILE = PROJECT_ROOT / "automation" / "data" / "search_cache.json"