fix: use Query to properly handle --pingpong flag

Use nonebot_plugin_alconna Query to correctly handle the --pingpong
boolean flag. Previously the flag wasn't working because the
parameter wasn't being properly injected.

Changes:
- Import Query from nonebot_plugin_alconna
- Change Option to not have args (just Option('--pingpong'))
- Use Query[bool] type annotation with default Query('pingpong')
- Check pingpong.available to determine if flag was set

konabot/plugins/image_process/__init__.py

@@ -6,7 +6,7 @@ import PIL
 import PIL.Image
 import cv2
 import imageio.v3 as iio
-from nonebot_plugin_alconna import Alconna, Args, Image, Option, UniMessage, on_alconna
+from nonebot_plugin_alconna import Alconna, Args, Image, Option, Query, UniMessage, on_alconna
 import numpy
 
 from konabot.common.nb.exc import BotExceptionMessage
@@ -34,7 +34,7 @@ cmd_giftool = on_alconna(
         Option("-t", Args["length", str]),
         Option("-to", Args["end_point", str]),
         Option("--speed", Args["speed_factor", float], default=1.0, alias=["-s"]),
-        Option("--pingpong", default=False),
+        Option("--pingpong"),
     )
 )
 
@@ -47,7 +47,7 @@ async def _(
     length: str | None = None,
     speed_factor: float = 1.0,
     end_point: str | None = None,
-    pingpong: bool = False,
+    pingpong: Query[bool] = Query("pingpong"),
 ):
     ss: None | float = None
     if start_point:
@@ -165,7 +165,7 @@ async def _(
         rdur_ms = rdur_ms[::-1]
 
     # 处理 pingpong 模式
-    if pingpong:
+    if pingpong.available:
         # 复制一份反转的帧序列（去掉第一帧避免重复）
         pingpong_frames = rframes[1:][::-1] if len(rframes) > 1 else rframes[::-1]
         pingpong_durations = rdur_ms[1:][::-1] if len(rdur_ms) > 1 else rdur_ms[::-1]