CT115 (Mumuni relay #747) — two live-instance defects after PR #12:
1. GET /api/whatsapp/mock-log 500'd with a valid admin token:
'no such column: whatsapp_log.message_text'. The model gained
message_text/wa_message_id/ticket_number (and dropped command) in
4afdc36 with no migration, so legacy DBs keep the (command, ...) shape.
ensure_legacy_schema (startup, app/main.py) now adds the three missing
columns idempotently and backfills legacy command bodies into
message_text before dropping the obsolete NOT NULL command column, so
both the mock-log read path and the ORM write path work on healed DBs.
New producer/consumer regression (tests/test_whatsapp_log_legacy_heal.py)
reproduces the exact OperationalError, then asserts 200 + data.
2. ROLE_ALIASES gap: underscore legacy roles (cs_rep, cs_manager,
fm_dispatcher) were not mapped, so normalize_legacy_user_roles could not
converge rows like user 18 (test@denya.com, role 'cs_rep') and the
frontend stranded them on /tickets. Added the underscore aliases; tests
assert normalize_role('cs_rep') == 'CS Rep' and a cs_rep row converges
and authenticates.
