feat: Add DeepSeek API key and fix MCP environment variable parsing

.env.template

@@ -1,6 +1,11 @@
+
+
 # Your openai api key. (required)
 OPENAI_API_KEY=sk-xxxx
 
+# DeepSeek Api Key. (Optional)
+DEEPSEEK_API_KEY=
+
 # Access password, separated by comma. (optional)
 CODE=your-password
 
@@ -70,5 +75,6 @@ ANTHROPIC_API_VERSION=
 ### anthropic claude Api url (optional)
 ANTHROPIC_URL=
 
+
 ### (optional)
 WHITE_WEBDAV_ENDPOINTS=

app/config/server.ts

@@ -255,6 +255,6 @@ export const getServerSideConfig = () => {
     defaultModel,
     visionModels,
     allowedWebDavEndpoints,
-    enableMcp: !!process.env.ENABLE_MCP,
+    enableMcp: process.env.ENABLE_MCP === "true",
   };
 };