Harden Turnstile solve path for --fast/Xvfb runs

Add cf_sleep, multi-round shadow clicks, richer diagnostics, and longer profile/CF budgets so tokenLen=0 fails less on headless servers.

config.example.json

@@ -95,10 +95,18 @@
   "code_form_timeout": 180,
   "// profile_timeout": "资料页（姓名密码生日）超时（秒）",
   "profile_timeout": 240,
-  "// turnstile_retry_limit": "Turnstile 失败重试次数",
+  "// turnstile_retry_limit": "Turnstile 失败重试次数（账号级）",
   "turnstile_retry_limit": 3,
   "// turnstile_stuck_timeout": "Turnstile 卡住判定超时（秒）",
   "turnstile_stuck_timeout": 150,
+  "// turnstile_fast_fail_count": "资料页内连续 getTurnstileToken 失败几次后放弃（服务器建议 4）",
+  "turnstile_fast_fail_count": 4,
+  "// turnstile_retry_after_sec": "资料页等待 CF 多久后触发二次复用（秒）",
+  "turnstile_retry_after_sec": 12,
+  "// turnstile_retry_gap_sec": "两次二次复用之间的最小间隔（秒）",
+  "turnstile_retry_gap_sec": 8,
+  "// turnstile_max_rounds": "单次 getTurnstileToken 内 click/poll 轮数",
+  "turnstile_max_rounds": 8,
   "// sso_timeout_base / sso_timeout_max / sso_progress_extension": "等待 sso cookie 的基础/上限/有进度时延长（秒）",
   "sso_timeout_base": 240,
   "sso_timeout_max": 480,