P3: depreciation straight-line by days through the final month, schedules by day (defects 22, 9, D-37)

The final month takes what the months before leave, spread over its days;
a disposed asset stops on its disposal day. A skipped month is caught up
in the month the run is made; a reversed run un-posts its month. New
schedules spread by day; equal-months schedules must start on the 1st.
Amounts round to the currency's own minor unit. Kani and Lean proofs; an
exhaustive search over runs, reversals and disposals.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj

crates/ledger-core/src/lib.rs

@@ -52,8 +52,9 @@ pub use arap::{
 };
 pub use assets::{
     Asset, AssetCorrection, AssetId, AssetStatus, DepreciationMethod, DisposalAmounts, NewAsset,
-    ScheduleLine, TaxBasis, TaxBasisRule, accumulated_depreciation, book_value,
-    depreciation_schedule, disposal_amounts,
+    PostedRun, RunAmount, ScheduleLine, TaxBasis, TaxBasisRule, accumulated_depreciation,
+    book_value, catch_up_room, check_disposal, depreciation_effects, depreciation_schedule,
+    disposal_amounts, life_end, run_amount, run_amounts,
 };
 pub use cashflow::{
     CashFlowFooting, CashFlowKind, CashFlowLine, CashFlowParams, CashFlowSection,
@@ -91,7 +92,7 @@ pub use reports::{
 };
 pub use schedules::{
     AmortizationSchedule, Frequency, NewRecurring, NewSchedule, RecurringEntry, RecurringId,
-    ScheduleId, ScheduleKind, TemplateLine,
+    ScheduleConvention, ScheduleId, ScheduleKind, TemplateLine,
 };
 pub use shares::{PartyMember, PartyShare, Share};
 pub use tax::{