update project files

app/services/cleaner.py

@@ -143,7 +143,7 @@ async def delete_papers_by_date_range(
                 {"paper_id": paper_id},
             )
 
-            # 1.5 Phase 5: 从 ChromaDB 删除语义索引
+            # 1.5 从 ChromaDB 删除语义索引
             try:
                 from app.services.embedder import delete_paper
 

app/services/summarizer.py

@@ -252,13 +252,13 @@ async def _do_summarize_one(db: Session, paper: Paper) -> dict:
         status.raw_output_saved = True
         db.commit()
 
-        # Phase 5: LaTeX 图片提取（可选增强，失败不影响总结）
+        # LaTeX 图片提取（可选增强，失败不影响总结）
         try:
             await extract_images_from_source(arxiv_id)
         except Exception:
             logger.warning("Failed to extract images for %s", arxiv_id, exc_info=True)
 
-        # Phase 5: 同步写入语义索引（失败仅 log）
+        # 同步写入语义索引（失败仅 log）
         try:
             from app.services.embedder import index_paper