feat(claude-code): 增加 TLS 指纹伪装、Cache TTL 统一、CLI 限制与流超时冷却

- 新增 curl_cffi Transport，支持真实浏览器 TLS 指纹伪装 (Chrome/Node.js)
- 增加 Cache TTL Override 功能，强制统一 cache_control 类型防止行为指纹差异
- 增加 CLI-only 客户端限制，支持仅允许 Claude Code CLI 访问
- 池健康策略增加 stream timeout 计数与自动冷却机制
- OAuth 账号 Region 选择改为从 AWS API 动态获取，支持搜索和自定义输入
- 前端 PoolConfigDialog 增加对应配置 UI

uv.lock

@@ -41,6 +41,7 @@ dev = [
     { name = "pytest-asyncio" },
 ]
 tls = [
+    { name = "curl-cffi" },
     { name = "tls-client" },
 ]
 
@@ -71,6 +72,7 @@ requires-dist = [
     { name = "bcrypt", specifier = ">=5.0.0" },
     { name = "certifi", specifier = ">=2026.1.4" },
     { name = "cryptography", specifier = ">=46.0.4" },
+    { name = "curl-cffi", marker = "extra == 'tls'", specifier = ">=0.7.0" },
     { name = "fastapi", extras = ["standard"], specifier = ">=0.128.0" },
     { name = "gunicorn", specifier = ">=24.1.1" },
     { name = "httpx", marker = "extra == 'dev'", specifier = ">=0.25.0" },
@@ -727,6 +729,29 @@ wheels = [
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 ]
 
+[[package]]
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+version = "0.14.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "certifi" },
+    { name = "cffi" },
+]
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+]
+
 [[package]]
 name = "distro"
 version = "1.9.0"