m/paliad#96 — per-event-card optional choices on the Verfahrensablauf
timeline. This commit lands the schema + service layer.
Migration 129:
- paliad.project_event_choices table (project_id, submission_code,
choice_kind ∈ {appellant, include_ccr, skip}, choice_value) with
UNIQUE(project_id, submission_code, choice_kind) for idempotent
re-pick, RLS via paliad.can_see_project.
- paliad.deadline_rules.choices_offered jsonb — opt-in declaration of
which choice-kinds each rule offers. Seeded for every decision rule
(appellant), every priority='optional' rule (skip), and the two
Klageerwiderung rules (upc.inf.cfi.sod + de.inf.lg.erwidg) with
include_ccr.
Live verification before authoring:
- rule_code is NULL on every decision row → submission_code is the
join key (matches AnchorOverrides plumbing in fristenrechner.go).
- upc.inf.cfi.sod is the UPC Klageerwiderung, not upc.inf.cfi.def
(rejected the design doc's first guess; SELECT name ILIKE
'Klageerwiderung' confirmed).
Go service:
- models.ProjectEventChoice + DeadlineRule.ChoicesOffered.
- EventChoiceService: ListForProject / Upsert (with audit-log row to
paliad.system_audit_log) / Delete. Pure-helper ToCalcOptionsAddendum
+ per-kind value validation + unit tests.
Design: docs/design-event-card-choices-2026-05-25.md §3 + §6.
