PRD for the columnar litigation planner replacing today's 4-tab catalog
at /tools/procedures with a Litigation Builder backed by a new Scenario
DB. Captures 20 chip-picker decisions (5 batches via AskUserQuestion)
covering: unified-builder shape with 3 entry modes (cold-open /
event-triggered / Akte), separate paliad.scenarios table with
multi-proceeding constellations, auto-save + named-list, per-proceeding
flags + perspective + Detailgrad, 3-state event cards
(planned/filed/skipped), per-event-card optional horizon, vertical
stacked column-triplets with inline spawn children, universal search
(events + scenarios + Akten), 3-step promote-to-project wizard,
read-only team sharing, desktop v1 + mobile basic-read.
Includes data model deltas (4 new tables + 1 column on
paliad.projects), 6-slice migration plan from the current live U0-U4
catalog, and coder hand-off notes. Cross-proceeding peer triggers and
DE/EPA/DPMA full expansion deferred to v1.1.