[biast12]

RM-335

Description

cache-sync re-serializes gateway channels through model::channel::Channel, which had no flags field, so the obfuscation flag never reached the channels table.

• Channel now keeps flags.
• cache-sync stamps each channel row with the writing bot (cached_by). An obfuscated placeholder can't overwrite a visible row that a different bot wrote, because obfuscation is per bot but the public and whitelabel bots share rows.

For:
TicketsBot-cloud/worker#155
TicketsBot-cloud/dashboard#155

Type of Change

• Bug fix
• New feature
• Breaking change

Testing

• Guard cases run against Postgres 16: same bot, other bot, unstamped rows, snapshot and single event

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