[migration-approved]
Three pieces complete the Klaerungen lifecycle:
1. Migration 028: iace_clarifications + iace_clarification_comments +
iace_clarification_history. Deterministic clarification_key
(UNIQUE per project) so engine re-inits don't lose answers.
History table logs every status/answer transition. The previous
JSONB-in-metadata storage is kept as read-only fallback for
pre-migration projects until a one-shot upcopy script runs.
2. Multi-User-Workflow:
- assigned_to field on every clarification (free-text user kuerzel
for now; an FK to users can be added in a follow-up).
- Comment thread per clarification (POST .../comment, GET
.../detail returns the thread).
- Status-history log written by UpsertClarification when the
status or answer actually changes.
- Frontend Modal: Zugewiesen-an + Bearbeiter fields, comment
thread with inline post, collapsible history section.
3. PDF-Export via print-friendly HTML:
- GET /clarifications.html returns a standalone A4-styled
document with status badges, norm references, affected hazards
and a signature row at the bottom. The Bediener opens the link
and uses Strg-P / Cmd-P to save as PDF. No server-side PDF
dependency added.
- Frontend "PDF / Druck" button next to CSV export.
Backend:
- internal/iace/store_clarifications.go: UpsertClarification,
ListClarificationsForProject, GetClarificationByKey,
AddClarificationComment, ListClarificationComments,
ListClarificationHistory.
- internal/api/handlers/iace_handler_clarifications.go:
- AnswerClarification now writes the SQL row, falls back to legacy
JSONB read on list.
- PostClarificationComment, ListClarificationDetail,
ExportClarificationsHTML added.
Migration must be applied manually on Mac Mini and prod via
psql -f /migrations/028_iace_clarifications.sql — pattern as in
scripts/apply_*_migration.sh.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>