Rename OpenCode Go preset to drop model suffix

Simplify the display name from "OpenCode Go (DeepSeek V4 Flash)" to
"OpenCode Go" in both the Claude Code and Claude Desktop preset lists.

src/config/claudeDesktopProviderPresets.ts

@@ -304,7 +304,7 @@ export const claudeDesktopProviderPresets: ClaudeDesktopProviderPreset[] = [
     iconColor: "#1E88E5",
   },
   {
-    name: "OpenCode Go (DeepSeek V4 Flash)",
+    name: "OpenCode Go",
     websiteUrl: "https://opencode.ai",
     category: "third_party",
     baseUrl: "https://opencode.ai/zen/go",

src/config/claudeProviderPresets.ts

@@ -234,7 +234,7 @@ export const providerPresets: ProviderPreset[] = [
     iconColor: "#1E88E5",
   },
   {
-    name: "OpenCode Go (DeepSeek V4 Flash)",
+    name: "OpenCode Go",
     websiteUrl: "https://opencode.ai",
     settingsConfig: {
       env: {