fix(copilot): 修复 GitHub Copilot 认证和代理问题 (#1854)

* fix(copilot): 修复 GitHub Copilot 400 认证错误

问题：使用 GitHub Copilot provider 时报错 400 bad request

根因：与 copilot-api 项目对比发现多处差异

修复内容：
- 更新版本号 0.26.7 到 0.38.2
- 更新 API 版本 2025-04-01 到 2025-10-01
- 添加缺失的关键 headers
- 修正 openai-intent 值
- 添加动态 API endpoint 支持
- 同步更新 stream_check.rs headers

Closes #1777

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: flush stream after write_all in hyper_client proxy

Add explicit flush() calls after write_all() for TLS stream, plain TCP
stream, and CONNECT tunnel requests to ensure buffered data is sent
immediately, preventing connection hangs in Copilot auth header flow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* 修复登录时的剪切板在mac与linux端可能没复制验证码

* fix: flush stream after write_all in hyper_client proxy

Add explicit flush() calls after write_all() for TLS stream, plain TCP
stream, and CONNECT tunnel requests to ensure buffered data is sent
immediately, preventing connection hangs in Copilot auth header flow.

* 修复登录时的剪切板在mac与linux端可能没复制验证码

* 1、修复不同类型的个人商业等不同类型的copilot账号问题
2、将验证码复制改为异步操作

* fix: address PR review comments for Copilot auth                                                      │
│                                                                                                                      │
│ - Fix clipboard blocking by using spawn_blocking for arboard ops                                                     │
│ - Implement dynamic endpoint routing for enterprise Copilot users                                                    │
│ - Add api_endpoints cache cleanup in remove_account() and clear_auth()                                               │
│ - Change API endpoint log level from info to debug                                                                   │
│ - Fix clear_auth() to continue cleanup even if file deletion fails                                                   │
│ - Add 9 unit tests for Copilot detection and api_endpoints cachin

* style: fix cargo fmt formatting

* Fix Copilot dynamic endpoint handling

* fix: restore clear_auth() memory-first cleanup order and fix cache leaks

- Restore clear_auth() to clean memory state before deleting the storage
  file. The previous order (file deletion first) caused a regression where
  users could get stuck in a "cannot log out" state if file removal failed.

- Add missing copilot_models.clear() in clear_auth() — this cache was
  cleaned in remove_account() but never in the full clear path.

- Add endpoint_locks cleanup in both remove_account() and clear_auth()
  to prevent minor in-process memory leaks.

- Update test to assert the correct behavior: memory should be cleaned
  even when file deletion fails.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: 周梦泽 <mengze.zhou@dafeng-tech.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Jason <farion1231@gmail.com>

src-tauri/src/services/stream_check.rs

@@ -88,6 +88,7 @@ impl StreamCheckService {
         provider: &Provider,
         config: &StreamCheckConfig,
         auth_override: Option<AuthInfo>,
+        base_url_override: Option<String>,
         claude_api_format_override: Option<String>,
     ) -> Result<StreamCheckResult, AppError> {
         // 合并供应商单独配置和全局配置
@@ -100,6 +101,7 @@ impl StreamCheckService {
                 provider,
                 &effective_config,
                 auth_override.clone(),
+                base_url_override.clone(),
                 claude_api_format_override.clone(),
             )
             .await;
@@ -191,14 +193,18 @@ impl StreamCheckService {
         provider: &Provider,
         config: &StreamCheckConfig,
         auth_override: Option<AuthInfo>,
+        base_url_override: Option<String>,
         claude_api_format_override: Option<String>,
     ) -> Result<StreamCheckResult, AppError> {
         let start = Instant::now();
         let adapter = get_adapter(app_type);
 
-        let base_url = adapter
-            .extract_base_url(provider)
-            .map_err(|e| AppError::Message(format!("Failed to extract base_url: {e}")))?;
+        let base_url = match base_url_override {
+            Some(base_url) => base_url,
+            None => adapter
+                .extract_base_url(provider)
+                .map_err(|e| AppError::Message(format!("Failed to extract base_url: {e}")))?,
+        };
 
         let auth = auth_override
             .or_else(|| adapter.extract_auth(provider))
@@ -364,6 +370,8 @@ impl StreamCheckService {
         let mut request_builder = client.post(&url);
 
         if is_github_copilot {
+            // 生成请求追踪 ID
+            let request_id = uuid::Uuid::new_v4().to_string();
             request_builder = request_builder
                 .header("authorization", format!("Bearer {}", auth.api_key))
                 .header("content-type", "application/json")
@@ -380,7 +388,13 @@ impl StreamCheckService {
                     copilot_auth::COPILOT_INTEGRATION_ID,
                 )
                 .header("x-github-api-version", copilot_auth::COPILOT_API_VERSION)
-                .header("openai-intent", "conversation-panel");
+                // 260401 新增copilot 的关键 headers
+                .header("openai-intent", "conversation-agent")
+                .header("x-initiator", "user")
+                .header("x-interaction-type", "conversation-agent")
+                .header("x-vscode-user-agent-library-version", "electron-fetch")
+                .header("x-request-id", &request_id)
+                .header("x-agent-task-id", &request_id);
         } else if is_openai_chat || is_openai_responses {
             // OpenAI-compatible targets: Bearer auth + SSE headers only
             request_builder = request_builder