Method prefill_remote_browser_pool

src/services/flow_client.py:4445–4483

让本地 remote_browser 服务提前开始补池，尽量把取 token 等待搬到前面。

(
        self,
        project_id: str,
        action: str = "IMAGE_GENERATION",
        token_id: Optional[int] = None,
        *,
        cooldown_seconds: float = 8.0,
    )

        return payload

    async def prefill_remote_browser_pool(
        self,
        project_id: str,
        action: str = "IMAGE_GENERATION",
        token_id: Optional[int] = None,
        *,
        cooldown_seconds: float = 8.0,
    ) -> bool:
        """让本地 remote_browser 服务提前开始补池，尽量把取 token 等待搬到前面。"""
        if config.captcha_method != "remote_browser":
            return False

        normalized_project = str(project_id or "").strip()
        normalized_action = str(action or "IMAGE_GENERATION").strip() or "IMAGE_GENERATION"
        if not normalized_project:
            return False

        cache_key = f"{normalized_project}|{normalized_action}|{int(token_id or 0)}"
        now_value = time.monotonic()
        last_sent = float(self._remote_browser_prefill_last_sent.get(cache_key, 0.0) or 0.0)
        if (now_value - last_sent) < max(0.5, float(cooldown_seconds)):
            return False

        try:
            await self._call_remote_browser_service(
                method="POST",
                path="/api/v1/prefill",
                json_data={
                    "project_id": normalized_project,
                    "action": normalized_action,
                    "token_id": token_id,
                },
                timeout_override=3,
            )
            self._remote_browser_prefill_last_sent[cache_key] = now_value
            return True
        except Exception as e:
            debug_logger.log_warning(f"[reCAPTCHA RemoteBrowser] prefill 失败: {e}")
            return False

    async def prefill_remote_browser_for_tokens(self, tokens: List[Any], action: str = "IMAGE_GENERATION") -> int:
        if config.captcha_method != "remote_browser":