feat: remove Kimi For Coding preset from Codex

The Kimi For Coding preset pins users to a single coding-only model
(kimi-for-coding), restricting model selection. Drop it from the Codex
presets and trim the corresponding row in the trilingual user manual.
The general Kimi preset (Moonshot platform) is kept, and presets for
other apps are unchanged.

src/config/codexProviderPresets.ts

@@ -370,29 +370,6 @@ requires_openai_auth = true`,
     icon: "kimi",
     iconColor: "#6366F1",
   },
-  {
-    name: "Kimi For Coding",
-    websiteUrl: "https://www.kimi.com/code/docs/",
-    apiKeyUrl: "https://www.kimi.com/code/",
-    auth: generateThirdPartyAuth(""),
-    config: generateThirdPartyConfig(
-      "kimi_coding",
-      "https://api.kimi.com/coding/v1",
-      "kimi-for-coding",
-    ),
-    endpointCandidates: ["https://api.kimi.com/coding/v1"],
-    apiFormat: "openai_chat",
-    modelCatalog: modelCatalog([
-      {
-        model: "kimi-for-coding",
-        displayName: "Kimi For Coding",
-        contextWindow: 262144,
-      },
-    ]),
-    category: "cn_official",
-    icon: "kimi",
-    iconColor: "#6366F1",
-  },
   {
     name: "StepFun",
     websiteUrl: "https://platform.stepfun.com/step-plan",