站点配置（百世密码/韵达账密/安能路径）从 config.yaml 移至 state.db

- state_store：加 site_settings(site,key,value) 表 + get_setting/set_setting/get_site_settings
- runtime：seed_legacy_config 启动一次性从 config.yaml 灌入（已存在不覆盖）；安能 app_path 改读 state_store
- site_baishi：导出密码改读 get_setting("百世","password")
- site_yunda：登录账密改读 get_setting("韵达",...)
- server：/config PUT 接受 settings；新增 GET /config/{site}/settings（不进 5s 轮询）

debug 仍保留在 config.yaml；站点配置现由前端配置弹窗管理（state.db 为准）。

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

state_store.py

@@ -96,6 +96,14 @@ def init_db():
             )
         except sqlite3.OperationalError:
             pass
+        conn.execute("""
+            CREATE TABLE IF NOT EXISTS site_settings (
+                site  TEXT,
+                key   TEXT,
+                value TEXT,
+                PRIMARY KEY (site, key)
+            )
+            """)
         conn.commit()
 
 
@@ -282,6 +290,43 @@ def get_all_config():
     }
 
 
+# ============================ 站点键值配置（site_settings）============================
+# 各站专属配置（百世密码、韵达账密、安能 exe 路径…），由前端配置弹窗设置。
+
+
+def get_setting(site, key):
+    """读取单站某个配置值；未设置返回 ''。"""
+    if not os.path.exists(STATE_DB_PATH):
+        return ""
+    with sqlite3.connect(STATE_DB_PATH) as conn:
+        row = conn.execute(
+            "SELECT value FROM site_settings WHERE site=? AND key=?", (site, key)
+        ).fetchone()
+    return row[0] if row else ""
+
+
+def set_setting(site, key, value):
+    """设置单站某个配置值（upsert）。"""
+    with sqlite3.connect(STATE_DB_PATH) as conn:
+        conn.execute(
+            "INSERT INTO site_settings (site, key, value) VALUES (?, ?, ?) "
+            "ON CONFLICT(site, key) DO UPDATE SET value=excluded.value",
+            (site, key, value if value is not None else ""),
+        )
+        conn.commit()
+
+
+def get_site_settings(site):
+    """返回单站全部配置 {key: value}。"""
+    if not os.path.exists(STATE_DB_PATH):
+        return {}
+    with sqlite3.connect(STATE_DB_PATH) as conn:
+        rows = conn.execute(
+            "SELECT key, value FROM site_settings WHERE site=?", (site,)
+        ).fetchall()
+    return {r[0]: r[1] for r in rows}
+
+
 # ============================ 任务历史 ============================