refactor(admin): eliminate non-filament admin tools

[Jamiras]

Moves the last two tools from pages-legacy/admin.blade.php to filament.

[greptile-apps]

Greptile Summary

Moves the remaining legacy admin tools into Filament.

• Adds Copy Unlocks with confirmation.
• Adds Identify Alts.
• Removes legacy admin routes and navigation.

Confidence Score: 4/5

Not safe to merge until no-match submissions stop failing.

Copy Unlocks references an undefined variable when no players match. All previous findings are resolved or withdrawn.

Files Needing Attention: resources/views/livewire/administrative-tools/copy-unlocks.blade.php

_{Reviews (2): Last reviewed commit: "address feedback" | Re-trigger Greptile}