refactor(mcp): remove installed preset badge and env-related preset logic

- Move MCP presets into Add modal, no auto-seeding into list
- Replace env-required presets with context7 (no env needed)
- Remove requiresEnv checks/prompts from list and form
- Keep Docs button; maintain clean list UI

src/components/mcp/McpPanel.tsx

@@ -6,9 +6,8 @@ import McpListItem from "./McpListItem";
 import McpFormModal from "./McpFormModal";
 import { ConfirmDialog } from "../ConfirmDialog";
 import { extractErrorMessage } from "../../utils/errorUtils";
-import { mcpPresets } from "../../config/mcpPresets";
-import McpToggle from "./McpToggle";
-import { buttonStyles, cardStyles, cn } from "../../lib/styles";
+// 预设相关逻辑已迁移到“新增 MCP”面板，列表此处无需引用
+import { buttonStyles } from "../../lib/styles";
 import { AppType } from "../../lib/tauri-api";
 
 interface McpPanelProps {
@@ -51,29 +50,14 @@ const McpPanel: React.FC<McpPanelProps> = ({ onClose, onNotify, appType }) => {
   useEffect(() => {
     const setup = async () => {
       try {
-        // 初始化导入：按应用类型从对应客户端导入已有 MCP（设为 enabled=true）
+        // 初始化：仅从对应客户端导入已有 MCP，不做“预设落库”
         if (appType === "claude") {
           await window.api.importMcpFromClaude();
         } else if (appType === "codex") {
           await window.api.importMcpFromCodex();
         }
-
-        // 读取现有 config.json 内容
-        const cfg = await window.api.getMcpConfig(appType);
-        const existing = cfg.servers || {};
-
-        // 将预设落库为禁用（若缺失）
-        const missing = mcpPresets.filter((p) => !existing[p.id]);
-        for (const p of missing) {
-          const seed: McpServer = {
-            ...(p.server as McpServer),
-            enabled: false,
-            source: "preset",
-          } as unknown as McpServer;
-          await window.api.upsertMcpServerInConfig(appType, p.id, seed);
-        }
       } catch (e) {
-        console.warn("MCP 初始化导入/落库失败（忽略继续）", e);
+        console.warn("MCP 初始化导入失败（忽略继续）", e);
       } finally {
         await reload();
       }
@@ -84,16 +68,8 @@ const McpPanel: React.FC<McpPanelProps> = ({ onClose, onNotify, appType }) => {
 
   const handleToggle = async (id: string, enabled: boolean) => {
     try {
-      const server = servers[id];
-      if (!server) {
-        const preset = mcpPresets.find((p) => p.id === id);
-        if (!preset) return;
-        await window.api.upsertMcpServerInConfig(
-          appType,
-          id,
-          preset.server as McpServer,
-        );
-      }
+      // 启用/禁用已存在的条目
+
       await window.api.setMcpEnabled(appType, id, enabled);
       await reload();
       onNotify?.(
@@ -221,11 +197,7 @@ const McpPanel: React.FC<McpPanelProps> = ({ onClose, onNotify, appType }) => {
             </div>
           ) : (
             (() => {
-              const notInstalledPresets = mcpPresets.filter(
-                (p) => !servers[p.id],
-              );
-              const hasAny =
-                serverEntries.length > 0 || notInstalledPresets.length > 0;
+              const hasAny = serverEntries.length > 0;
               if (!hasAny) {
                 return (
                   <div className="text-center py-12">
@@ -259,37 +231,7 @@ const McpPanel: React.FC<McpPanelProps> = ({ onClose, onNotify, appType }) => {
                     />
                   ))}
 
-                  {/* 预设（未安装） */}
-                  {notInstalledPresets.map((p) => {
-                    return (
-                      <div
-                        key={`preset-${p.id}`}
-                        className={cn(
-                          cardStyles.interactive,
-                          "!p-4 opacity-95",
-                        )}
-                      >
-                        <div className="flex items-center gap-4">
-                          <div className="flex-shrink-0">
-                            <McpToggle
-                              enabled={false}
-                              onChange={(en) => handleToggle(p.id, en)}
-                            />
-                          </div>
-                          <div className="flex-1 min-w-0">
-                            <h3 className="font-medium text-gray-900 dark:text-gray-100 mb-1">
-                              {p.id}
-                            </h3>
-                            {p.description && (
-                              <p className="text-sm text-gray-500 dark:text-gray-400 truncate">
-                                {p.description}
-                              </p>
-                            )}
-                          </div>
-                        </div>
-                      </div>
-                    );
-                  })}
+                  {/* 预设已移至“新增 MCP”面板中展示与套用 */}
                 </div>
               );
             })()