fix:优化工作面板，支持动态字数

app/main.py

@@ -292,7 +292,7 @@ async def rewrite(req: RewriteRequest, request: Request):
     src = req.source_text or ""
     logger.info(
         "api_rewrite_in rid=%s source_chars=%d title_hint_chars=%d tone=%s audience=%s "
-        "keep_points_chars=%d avoid_words_chars=%d",
+        "keep_points_chars=%d avoid_words_chars=%d target_body_chars=%d",
         rid,
         len(src),
         len(req.title_hint or ""),
@@ -300,6 +300,7 @@ async def rewrite(req: RewriteRequest, request: Request):
         req.audience,
         len(req.keep_points or ""),
         len(req.avoid_words or ""),
+        int(req.target_body_chars or 500),
     )
     result = rewriter.rewrite(req, request_id=rid)
     tr = result.trace or {}