feat: 🎨 finalize server url mode

docs/aquabox-url-mode.md

@@ -0,0 +1,30 @@
+# AquaBox URL Mode Setup Guide
+
+## For users
+
+1. Go to your Chuni game settings
+2. Go down to "Enable AquaBox" or "Upgrade AquaBox"
+3. Click on "Switch to URL mode"
+4. Enter the base URL for your AquaBox
+
+## For server owners / asset hosters
+
+> :warning: Assets are already not hosted on AquaDX for legal reasons.<br>
+> Hosting SEGA's assets may put you at higher risk of DMCA.
+
+1. Extract your Chunithm Luminous game files.
+
+    It is recommend you have the latest version of the game and all of the options your users may use.
+
+    The script to generate the proper paths can be found in [/tools/chusan-extractor.js](/tools/chusan-extractor.js). Node.js or Bun is required.<br>
+    Please read the comments at the top of the script for usage instructions.
+
+2. Copy the new `chu3` folder where you need it to be (read #3 if you're hosting AquaNet and want to host on the same endpoints).
+3. (Optional) Update `src/lib/config.ts`.
+```ts
+// Change this to the base url of where your assets are stored.
+// If you are hosting on AquaNet, you can put the files @ /public/chu3 & use '/chu3' for your base url.
+// This will work the same way as setting it on the UI does. TEST IT ON THE UI BEFORE YOU APPLY THIS CONFIG!!!
+export const USERBOX_DEFAULT_URL = "/chu3"; 
+```
+4. Enjoy!