Notify speakers when their video is uploaded online

[marcoacierno]

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Project	Deployment	Actions	Updated (UTC)
pycon	Error		Aug 16, 2026 11:28am

[claude]

Adds a new speaker_video_recording_uploaded email notification, drafted (not auto-sent) for each schedule-item speaker once video+thumbnail are on YouTube, tracked via a new emails_scheduled flag for idempotency.

• backend/schedule/tasks.py: in upload_schedule_item_video, the email-drafting block unconditionally calls EmailTemplate.objects.for_conference(conference).get_by_identifier(EmailTemplateIdentifier.speaker_video_recording_uploaded) even when schedule_item.speakers is empty (e.g. break/social/registration items, as covered by test_upload_schedule_item_video_completes_when_there_are_no_speakers, which only passes because the test pre-creates the template). If a conference hasn't configured this new template, get_by_identifier raises for every schedule item with a video — including ones with no speakers to notify — after the video/thumbnail upload already succeeded. process_schedule_items_videos_to_upload catches this and marks the item failed, but to_upload() only selects status=pending, so it won't be retried automatically; this silently stalls the whole video pipeline for any conference missing the template. Consider skipping the template lookup entirely when all_speakers is empty, and/or handling a missing template without failing the already-completed video/thumbnail work.
• backend/schedule/models.py: the new from typing import TYPE_CHECKING / if TYPE_CHECKING block is inserted mid-file between existing imports rather than grouped with the other imports at the top — minor style nit.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.11%. Comparing base (7bb569a) to head (205b925).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4790      +/-   ##
==========================================
+ Coverage   93.09%   93.11%   +0.01%     
==========================================
  Files         360      360              
  Lines       11227    11239      +12     
  Branches      903      905       +2     
==========================================
+ Hits        10452    10465      +13     
  Misses        663      663              
+ Partials      112      111       -1     

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