feat: accept CLIENT_API_KEY on /license page.

Users can paste the key from the seller instead of editing license.env; it persists in license_state.json.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/license/fastapi_gate.py

@@ -51,8 +51,11 @@ def install_license_middleware(app: FastAPI) -> None:
             data = await request.json()
         except Exception:
             data = {}
-        code = (data.get("code") if isinstance(data, dict) else "") or ""
-        return redeem_code(str(code))
+        if not isinstance(data, dict):
+            data = {}
+        code = str(data.get("code") or "").strip()
+        ckey = str(data.get("client_api_key") or "").strip()
+        return redeem_code(code, client_api_key=ckey or None)
 
     @app.post("/api/license/validate")
     async def _license_validate_api():
@@ -65,7 +68,8 @@ def install_license_middleware(app: FastAPI) -> None:
         if request.method == "POST":
             form = await request.form()
             code = str(form.get("code") or "").strip()
-            result = redeem_code(code)
+            ckey = str(form.get("client_api_key") or "").strip()
+            result = redeem_code(code, client_api_key=ckey or None)
             if result.get("ok"):
                 msg = result.get("message") or "激活成功"
             else: