unbundle has no unpack alias, and the suggester misdirects to pack

[lancekrogers]

pack's inverse is unbundle, so unpack is a natural miss. Today that miss is worse than a plain "unknown command":

$ fest unpack --help
Error: unknown command "unpack" for "fest"

Did you mean this?
	pack

Cobra suggests pack — the opposite operation. Someone trying to extract a bundle is pointed at the command that creates one.

Fix

Add an alias to the unbundle command:

Aliases: []string{"unpack"},

Both CLIs have the same bug and the same fix:

• fest: internal/commands/pack/pack.go:116
• camp: cmd/camp/pack/unbundle.go:17

Non-breaking — unbundle keeps working, and the suggester starts resolving unpack correctly instead of misdirecting.

Not proposing a rename

pack/unbundle is asymmetric; pack/unpack or bundle/unbundle would be coherent. But renaming breaks two published CLIs and the docs site. The alias gets the practical benefit for none of the cost.