P0 hotfix: ingest_jobs.library_id (and all other UUID fields across 10
tables) were varchar(32), but standard UUIDs with hyphens are 36 chars,
causing StringDataRightTruncation on insert — mini-program upload was
completely broken.
Changes:
- models.py: All String(32) UUID fields → String(36) across 10 tables
(projects, edit_templates, edit_plans, template_clip_configs,
edit_plan_clips, ingest_jobs, classification_jobs, generation_tasks,
generated_videos, jobs)
- Alembic migration 036: ALTER COLUMN for all affected fields
- Unit tests: 43 tests verifying String(36) on all UUID columns and
standard UUID construction with hyphens
Fixes: upload/direct/complete StringDataRightTruncation error