EDEN 100.99.54 validation

Scope: static validation only. No production Telegram token or customer DB used.

Changes: legacy deep-link redirect endpoint; owner-confirmed webhook switch; selective custom-emoji metadata restore from backup; workflow YAML cleanup in separate patch.

Manual production checks required:
- run selective emoji restore from pre-conversion full backup; inspect report counts
- test legacy pu_file link, then button to new bot
- verify one original custom emoji renders as premium
- ensure old bot webhook behavior is intentionally replaced
