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docs(litigation-planner): Slice B design — Berufung unification + multi-axis catalog query + primary_party CHECK (m/paliad#124)
Adds §18 to the design doc folding in m's three 2026-05-26 decisions:

§18.1 Berufung unification — collapse 3 active UPC appeal proceeding_types
(upc.apl.merits / upc.apl.cost / upc.apl.order, 16 rules total) into ONE
upc.apl + appeal_target discriminator. 5 targets: Endentscheidung,
Kostenentscheidung, Anordnung, Schadensbemessung, Bucheinsicht. Adds
proceeding_types.appeal_target + deadline_rules.applies_to_target[]
columns; archives the 3 old codes; CalcOptions gains AppealTarget filter.
Migration 134 with pre-migration audit pass. Q to m on whether
Schadensbemessung-as-appeal shares the merits rule set (R) or has its own.

§18.2 Multi-axis catalog query API — new Catalog.LookupEvents method
taking optional {jurisdiction, proceeding_type_id, party,
event_category_id, appeal_target} axes + EventLookupDepth control
("next" / "all-following"). No schema delta — reuses existing parent_id
+ sequence_order graph. Returns EventMatch with priority + depth metadata.

§18.3 primary_party enum tightening — CHECK constraint on
deadline_rules.primary_party against canonical four-value vocab
(claimant/defendant/court/both, plus NULL for orphan concept seeds).
Live audit confirmed all 26+26+38+63 proceeding-bound rows already
conform; the 78 NULL rows are all proceeding_type_id IS NULL orphans
(cross-cutting concepts) and stay NULL. Migration 135 with audit-first
RAISE NOTICE pass. Package exposes PrimaryParties[] + IsValidPrimaryParty().

§18.4 revises §10 slice plan: B1 (Berufung), B2 (catalog query), B3
(enum tightening). Independent + parallel-friendly.

Branch: mai/cronus/inventor-litigation-slice-b (off main d1d0cf9).
NOT reusing the merged Slice A branch.
2026-05-26 13:37:26 +02:00
..