fix: split LiveShell into Astro layout + individual islands

- Rewrite live.astro to use Astro Sidebar/Header/Card components
- VoiceControls becomes self-contained (fetches guilds/channels internally)
- Remove LiveShell.tsx (no longer needed)
- Each React island uses appropriate client:load/idle directive

.gitmodules

@@ -1,13 +0,0 @@
-[submodule "vendor/discord.js-selfbot-v13"]
-	path = vendor/discord.js-selfbot-v13
-	url = https://github.com/MythEclipse/discord.js-selfbot-v13.git
-
-[submodule "vendor/discord-video-stream"]
-	path = vendor/discord-video-stream
-	url = https://github.com/MythEclipse/discord-video-stream.git
-[submodule "vendor/drizzle-orm"]
-	path = vendor/drizzle-orm
-	url = https://github.com/MythEclipse/drizzle-orm.git
-[submodule "vendor/better-sqlite3"]
-	path = vendor/better-sqlite3
-	url = https://github.com/MythEclipse/better-sqlite3.git