feat: rename UCloud provider to Compshare/优云智算 with i18n support

Add optional `nameKey` field to all preset interfaces for localized
display names. The preset selector and form now resolve `nameKey` via
i18next, falling back to `name` when unset.

- zh: 优云智算 / en+ja: Compshare
- Update model ID prefix ucloud/ → compshare/ in OpenClaw presets
- Update partner promotion copy and README sponsor descriptions

src/config/opencodeProviderPresets.ts

@@ -3,6 +3,7 @@ import type { PresetTheme, TemplateValueConfig } from "./claudeProviderPresets";
 
 export interface OpenCodeProviderPreset {
   name: string;
+  nameKey?: string; // i18n key for localized display name
   websiteUrl: string;
   apiKeyUrl?: string;
   settingsConfig: OpenCodeProviderConfig;