1. Download the Plugin
Download the plugin archive from the following link:
files.catbox.moe/biqcwc.zip

2. Place the File in the Plugins Folder
Extract the downloaded archive. You will get a file named AkaneWeaponSwap.js.

Copy this file into your game’s plugin folder:
"Artis\www\js\plugins\"

After placing it, the path should look like:
"Artis\www\js\plugins\AkaneWeaponSwap.js"

3. Enable the Plugin
Open the following file with a text editor:
"Artis\www\js\plugins.js"

Scroll to the end of the file and add the following line inside the plugin list array:
{"name":"AkaneWeaponSwap","status":true,"description":"","parameters":{}}

Make sure:

3-1. Each plugin entry is separated by a comma ,.

3-2. This line is inside the array and not outside it.

4. Launch the Game and Test
Start the game.

Press the A key to open the weapon swap menu.

By default, the menu is in Traditional Chinese. To change language, open AkaneWeaponSwap.js in a text editor and modify the names directly.

5. Controls
Arrow keys: Navigate between weapons

Enter / Z: Confirm weapon change

Esc / X: Close the menu

#update 1:
weaponConfig in AkaneWeaponSwap.js:

const weaponConfig = {
17: { name: "雙刀", en_name: "Dual Blade", atkCap: 999, forceTPMax: true, forceMPMax: true, noTPConsume: true, noMPConsume: true },
11: { name: "黑美", en_name: "Black Beauty", atkCap: 800, forceTPMax: false, forceMPMax: true, noTPConsume: false, noMPConsume: true },

1: { name: "R刃", en_name: "R-Blade", atkCap: 700, forceTPMax: false, forceMPMax: false, noTPConsume: false, noMPConsume: false },

};