Atomic extraction of the deadline-rule compute engine + types from
internal/services into a new pkg/litigationplanner package that paliad
+ youpc.org can both import. No behaviour change — every existing test
passes against the post-move shape.
Package contents (~1850 LoC):
- doc.go package docstring + reuse manifesto
- types.go Rule, ProceedingType, NullableJSON, AdjustmentReason,
HolidayDTO, CalcOptions, CalcRuleParams, Timeline,
TimelineEntry, RuleCalculation*, FristenrechnerType,
ProjectHint, sentinel errors
- catalog.go Catalog interface (proceeding + rule lookups)
- holidays.go HolidayCalendar interface
- courts.go CourtRegistry interface + DefaultsForJurisdiction +
country/regime constants
- expr.go EvalConditionExpr + HasConditionExpr +
ExtractFlagsFromExpr (jsonb gate evaluator)
- durations.go ApplyDuration + AddWorkingDays (pure compute)
- subtrack.go SubTrackRouting + LookupSubTrackRouting registry
- legal_source.go FormatLegalSourceDisplay + BuildLegalSourceURL
- proceeding_mapping.go MapLitigationToFristenrechner + code constants
(CodeUPCInfringement, CodeDEInfringementLG, ...)
- engine.go Calculate + CalculateRule + the trigger-event
branch + applyRuleOverrides (the big move)
paliad side (~1900 LoC net deletion):
- internal/services/fristenrechner.go shrinks from 1505 → ~290 lines
(thin paliad Catalog adapter + type aliases for back-compat).
- internal/models/models.go: DeadlineRule, ProceedingType, NullableJSON
become type aliases to litigationplanner.* — every sqlx scan and
every projection_service caller compiles unchanged.
- internal/services/holidays.go: AdjustmentReason + HolidayDTO become
aliases to lp.* (canonical definitions now in the package).
- internal/services/proceeding_mapping.go: rewritten as thin re-exports
of lp constants + helpers.
- internal/services/deadline_search_service.go: FormatLegalSourceDisplay
+ BuildLegalSourceURL replaced with delegating wrappers to lp.
Catalog interface satisfaction:
- DeadlineRuleService → paliadCatalog adapter (wraps the existing
service, replicates the original SELECT shapes).
- HolidayService → satisfies lp.HolidayCalendar directly (compile-
time assertion at end of fristenrechner.go).
- CourtService → satisfies lp.CourtRegistry directly.
Wire shape is byte-identical. JSON tags on Rule / ProceedingType /
Timeline / TimelineEntry / RuleCalculation match the historical
UIResponse / UIDeadline shape; the frontend reads the same bytes.
Slice B (Catalog interface + paliad loader cleanup) is folded into
this commit since Slice A already needs the interfaces to call
Calculate across the boundary. Slice C (embedded UPC snapshot +
generator) is the next coder shift; the Berufung unification m
called out lands in Slice B/C per head's brief.
Refs: docs/design-litigation-planner-2026-05-26.md
