diff --git a/web_server.py b/web_server.py
index 8638a16..6656d58 100644
--- a/web_server.py
+++ b/web_server.py
@@ -366,7 +366,10 @@ def get_user_resources(username: Optional[str] = None) -> Tuple[Optional[WebTerm
         run_mode = session.get('run_mode')
         thinking_mode_flag = session.get('thinking_mode')
         if run_mode not in {"fast", "thinking", "deep"}:
-            run_mode = "thinking" if thinking_mode_flag else "fast"
+            if thinking_mode_flag:
+                run_mode = "deep"
+            else:
+                run_mode = "fast"
         thinking_mode = run_mode != "fast"
         terminal = WebTerminal(
             project_path=str(workspace.project_path),
@@ -382,6 +385,8 @@ def get_user_resources(username: Optional[str] = None) -> Tuple[Optional[WebTerm
         user_terminals[username] = terminal
         terminal.username = username
         terminal.quota_update_callback = lambda metric=None: emit_user_quota_update(username)
+        session['run_mode'] = terminal.run_mode
+        session['thinking_mode'] = terminal.thinking_mode
     else:
         terminal.update_container_session(container_handle)
         attach_user_broadcast(terminal, username)
@@ -799,14 +804,28 @@ def login():
             status_code = 429
         return jsonify(error_payload), status_code
 
+    workspace = user_manager.ensure_user_workspace(record.username)
+    preferred_run_mode = None
+    try:
+        personal_config = load_personalization_config(workspace.data_dir)
+        candidate_mode = (personal_config or {}).get('default_run_mode')
+        if isinstance(candidate_mode, str):
+            normalized_mode = candidate_mode.lower()
+            if normalized_mode in {"fast", "thinking", "deep"}:
+                preferred_run_mode = normalized_mode
+    except Exception as exc:
+        debug_log(f"加载个性化偏好失败: {exc}")
+
     session['logged_in'] = True
     session['username'] = record.username
     default_thinking = app.config.get('DEFAULT_THINKING_MODE', False)
     session['thinking_mode'] = default_thinking
-    session['run_mode'] = app.config.get('DEFAULT_RUN_MODE', "thinking" if default_thinking else "fast")
+    session['run_mode'] = app.config.get('DEFAULT_RUN_MODE', "deep" if default_thinking else "fast")
+    if preferred_run_mode:
+        session['run_mode'] = preferred_run_mode
+        session['thinking_mode'] = preferred_run_mode != 'fast'
     session.permanent = True
     clear_failures("login", identifier=client_ip)
-    workspace = user_manager.ensure_user_workspace(record.username)
     try:
         container_manager.ensure_container(record.username, str(workspace.project_path))
     except RuntimeError as exc:
@@ -1093,6 +1112,26 @@ def update_personalization_settings(terminal: WebTerminal, workspace: UserWorksp
         config = save_personalization_config(workspace.data_dir, payload)
         try:
             terminal.apply_personalization_preferences(config)
+            session['run_mode'] = terminal.run_mode
+            session['thinking_mode'] = terminal.thinking_mode
+            ctx = getattr(terminal, 'context_manager', None)
+            if ctx and getattr(ctx, 'current_conversation_id', None):
+                try:
+                    ctx.conversation_manager.save_conversation(
+                        conversation_id=ctx.current_conversation_id,
+                        messages=ctx.conversation_history,
+                        project_path=str(ctx.project_path),
+                        todo_list=ctx.todo_list,
+                        thinking_mode=terminal.thinking_mode,
+                        run_mode=terminal.run_mode
+                    )
+                except Exception as meta_exc:
+                    debug_log(f"应用个性化偏好失败: 同步对话元数据异常 {meta_exc}")
+            try:
+                status = terminal.get_status()
+                socketio.emit('status_update', status, room=f"user_{username}")
+            except Exception as status_exc:
+                debug_log(f"广播个性化状态失败: {status_exc}")
         except Exception as exc:
             debug_log(f"应用个性化偏好失败: {exc}")
         return jsonify({