修正北京时间并更换新闻候选源

app/agent/runner.py

@@ -8,6 +8,7 @@ from sqlalchemy.orm import Session
 
 from app.agent.report_writer import ReportWriter
 from app.core.config import Settings
+from app.core.timezone import beijing_today
 from app.db.repository import AgentRepository
 from app.integrations.github_client import GitHubHotProjectClient
 from app.integrations.news_search_client import NewsSearchClient
@@ -30,7 +31,7 @@ class AgentRunner:
 
     def run_daily(self, run_date: Optional[date] = None) -> RunResponse:
         # Runner统一编排候选采集、模型研判和持久化，保证一次运行只有一种业务路径。
-        current_date = run_date or date.today()
+        current_date = run_date or beijing_today()
         request_payload = {
             "run_date": current_date.isoformat(),
             "mode": "grok_agent",