docs: 补充mem_scanner和web_setup SOP；优化代码风格和上下文管理

sidercall.py

@@ -41,7 +41,7 @@ class SiderLLMSession:
         return full_text   
 
 class ClaudeSession:
-    def __init__(self, api_key, api_base, model="claude-opus", context_win=10000):
+    def __init__(self, api_key, api_base, model="claude-opus", context_win=9000):
         self.api_key, self.api_base, self.default_model, self.context_win = api_key, api_base.rstrip('/'), model, context_win
         self.raw_msgs, self.lock = [], threading.Lock()
     def _trim_messages(self, messages):
@@ -53,7 +53,7 @@ class ClaudeSession:
             if (msg_len := len(msg['prompt'])) + current <= target:
                 result.append(msg); current += msg_len
             else: break
-        if current > 10000 * 4: print(f'[DEBUG] Whole context length {current//4}.')
+        if current > self.context_win * 3.6: print(f'[DEBUG] {len(result)} contexts, whole length {current//4} tokens.')
         return result[::-1] or messages[-2:]
     def raw_ask(self, messages, model=None, temperature=0.5, max_tokens=4096):
         model = model or self.default_model