feat: 开发采集插件

server/config/__init__.py

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+from config.settings import Settings, get_settings
+
+__all__ = ["Settings", "get_settings"]

server/config/models.yaml

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+# 模型目录（可入库）。密钥不写在这里，只引用 .env 中的环境变量名。
+default: deepseek-v4-flash
+
+models:
+  - id: deepseek-v4-flash
+    label: deepseek-v4-flash（快/省）
+    provider: deepseek
+    api_model: deepseek-v4-flash
+    base_url: https://api.deepseek.com
+    api_key_env: DEEPSEEK_API_KEY
+    max_tokens: 4000
+    # 本任务的提示词会让思维链一直推理到耗尽 max_tokens、正文为空，必须关闭。
+    params:
+      thinking:
+        type: disabled
+
+  - id: deepseek-v4-pro
+    label: deepseek-v4-pro（质量更好）
+    provider: deepseek
+    api_model: deepseek-v4-pro
+    base_url: https://api.deepseek.com
+    api_key_env: DEEPSEEK_API_KEY
+    max_tokens: 4000
+    params:
+      thinking:
+        type: disabled

server/config/settings.py

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+from functools import lru_cache
+from pathlib import Path
+
+from dotenv import load_dotenv
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+# .env 在仓库根（server/ 的上一级），供各部分共用
+_ROOT_DIR = Path(__file__).resolve().parents[2]
+load_dotenv(_ROOT_DIR / ".env")
+
+
+class Settings(BaseSettings):
+    """运行时与密钥。模型清单见 config/models.yaml。"""
+
+    model_config = SettingsConfigDict(
+        env_file=str(_ROOT_DIR / ".env"),
+        env_file_encoding="utf-8",
+        extra="ignore",
+    )
+
+    deepseek_api_key: str = ""
+    openai_api_key: str = ""
+    host: str = "127.0.0.1"
+    port: int = 8000
+    cors_origins: str = ""
+
+    @property
+    def cors_origin_list(self) -> list[str]:
+        if not self.cors_origins.strip():
+            return []
+        return [o.strip() for o in self.cors_origins.split(",") if o.strip()]
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()