chore(presets): migrate AICodeMirror and AICoding sponsor domains

- AICodeMirror: full domain migration .com -> .ai (www./api. subdomains,
  gateway paths preserved); drop api.claudecode.net.cn backup endpoint
  from endpointCandidates in 5 presets
- AICoding: full domain migration .sh -> .inc (bare domain + api.
  subdomain, invite code unchanged); README brand copy now plain
  "AICoding" without TLD suffix

Covers 8 preset files and all 4 README languages. Icons, promotion
keys, i18n copy, and legacy migration ids unchanged.

src/config/opencodeProviderPresets.ts

@@ -444,13 +444,13 @@ export const opencodeProviderPresets: OpenCodeProviderPreset[] = [
   },
   {
     name: "AICodeMirror",
-    websiteUrl: "https://www.aicodemirror.com",
-    apiKeyUrl: "https://www.aicodemirror.com/register?invitecode=9915W3",
+    websiteUrl: "https://www.aicodemirror.ai",
+    apiKeyUrl: "https://www.aicodemirror.ai/register?invitecode=9915W3",
     settingsConfig: {
       npm: "@ai-sdk/anthropic",
       name: "AICodeMirror",
       options: {
-        baseURL: "https://api.aicodemirror.com/api/claudecode",
+        baseURL: "https://api.aicodemirror.ai/api/claudecode",
         apiKey: "",
         setCacheKey: true,
       },
@@ -621,13 +621,13 @@ export const opencodeProviderPresets: OpenCodeProviderPreset[] = [
   },
   {
     name: "AICoding",
-    websiteUrl: "https://aicoding.sh",
-    apiKeyUrl: "https://aicoding.sh/i/CCSWITCH",
+    websiteUrl: "https://aicoding.inc",
+    apiKeyUrl: "https://aicoding.inc/i/CCSWITCH",
     settingsConfig: {
       npm: "@ai-sdk/anthropic",
       name: "AICoding",
       options: {
-        baseURL: "https://api.aicoding.sh",
+        baseURL: "https://api.aicoding.inc",
         apiKey: "",
         setCacheKey: true,
       },