Language priority is event.language → customer preferred_language → app default
→ … → en, but it was keyed on email_data.eventId, which only queueEmail injects.
Direct email_queue inserts (e.g. the gallery-publish "notify customer" path) set
the event_id COLUMN but not email_data.eventId, so those mails skipped
event.language and fell through to the default — e.g. a gallery-ready mail in EN
while the same event's pre-event reminder (sent via queueEmail) was DE.
The processor now backfills emailData.eventId from the authoritative event_id
column before rendering, so every send path resolves language from the event
consistently.
Luca
10559fd68e