fix(soundboard): read MANAGE_SPACE from the space bitfield

The add-sound control was gated on channelPermissions, which carries the
per-channel bitfield; MANAGE_SPACE lives in the space-level one. The check
silently evaluated false for everybody, including owners, so the button never
rendered and there was no way to add a sound at all.

Also raise the clip cap to 2 MB — a 30-second clip at a high bitrate cleared
1 MB — and stop reporting every upload failure as 'too large', which sent
people to shrink a file that was not the problem.

packages/web/src/components/voice/VoiceControls.tsx

@@ -39,6 +39,10 @@ export function VoiceControls() {
 
   const activeDmCall = useVoiceStore((s) => s.activeDmCall);
   const channelPerms = useSpaceStore((s) => currentVoiceChannelId ? s.channelPermissions.get(currentVoiceChannelId) : undefined);
+  // MANAGE_SPACE lives in the space-level bitfield, not the per-channel one —
+  // reading it from channelPermissions silently yielded false for everyone.
+  const spacePerms = useSpaceStore((s) => currentVoiceSpaceId ? s.spacePermissions.get(currentVoiceSpaceId) : undefined);
+  const canManageSpace = hasPermissionBit(spacePerms, PermissionBits.MANAGE_SPACE);
 
   // In DM calls, all permissions are granted; in space channels, check SPEAK and STREAM
   const isDmCall = !!activeDmCall;
@@ -128,7 +132,7 @@ export function VoiceControls() {
         {showSoundboard && currentVoiceSpaceId && (
           <SoundboardPopover
             spaceId={currentVoiceSpaceId}
-            canManage={hasPermissionBit(channelPerms, PermissionBits.MANAGE_SPACE)}
+            canManage={canManageSpace}
             onClose={() => setShowSoundboard(false)}
           />
         )}