Add tag alias resync workflow and status API

[biast12]

Description

Introduces a full tag-alias reconciliation flow: new backend resync/status endpoints, background processing with Redis lock/progress/cooldown tracking, Discord error handling, and audit logging for alias resync runs. It also extracts shared alias command/planning/storage logic into a new internal tagalias package and reuses it from tag creation and admin command recreation.

On the frontend, adds API bindings and a tags-page UI action to start resyncs, poll progress, surface cooldown/conflict responses, and show completion/warning/error toasts, plus new TagAliasResyncStatus typing and audit label support.

NEEDS: TicketsBot-cloud/database#42

Type of Change

• Bug fix
• New feature
• Breaking change

Testing

Add a good handful of command aliases not via the dashboard (for an example manually via the database)
These commands will be out of sync, now please click the button and see the commands the resynced to discord, this will work the other way too

Checklist

• My code follows the style of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works