chore: bump version to 3.9.0-beta.1

- Update version in package.json, Cargo.toml, tauri.conf.json
- Add CHANGELOG entry for v3.9.0-beta.1 with:
  - Local Proxy Server feature
  - Auto Failover with circuit breaker
  - Skills multi-app support
  - Provider icon colors
  - 25+ bug fixes
- Add proxy feature guide documentation (Chinese)

src/config/codexProviderPresets.ts

@@ -40,7 +40,7 @@ export function generateThirdPartyAuth(apiKey: string): Record<string, any> {
 export function generateThirdPartyConfig(
   providerName: string,
   baseUrl: string,
-  modelName = "gpt-5.1-codex"
+  modelName = "gpt-5.1-codex",
 ): string {
   // 清理供应商名称，确保符合TOML键名规范
   const cleanProviderName =
@@ -113,7 +113,7 @@ requires_openai_auth = true`,
     config: generateThirdPartyConfig(
       "aihubmix",
       "https://aihubmix.com/v1",
-      "gpt-5.1-codex"
+      "gpt-5.1-codex",
     ),
     endpointCandidates: [
       "https://aihubmix.com/v1",
@@ -128,7 +128,7 @@ requires_openai_auth = true`,
     config: generateThirdPartyConfig(
       "dmxapi",
       "https://www.dmxapi.cn/v1",
-      "gpt-5.1-codex"
+      "gpt-5.1-codex",
     ),
     endpointCandidates: ["https://www.dmxapi.cn/v1"],
   },
@@ -141,7 +141,7 @@ requires_openai_auth = true`,
     config: generateThirdPartyConfig(
       "packycode",
       "https://www.packyapi.com/v1",
-      "gpt-5.1-codex"
+      "gpt-5.1-codex",
     ),
     endpointCandidates: [
       "https://www.packyapi.com/v1",