Projects: the snapshot of a project's figures

The project page opens on a snapshot: revenue, direct costs, the
contribution before overhead and its margin of revenue (a segment
margin: revenue less every cost traced to the project, fixed and
variable; B-37 item 7), in the black or red, and for on-spec work the
cost unrecovered if repaid. To date or this fiscal year. By month,
revenue and costs with the net to date in its own strip; costs by
category; the list colors each net by its sign. books.project carries
the same figures, and a parity test runs the viewer and the MCP on the
same books to the cent. Tests honor TMPDIR.

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

crates/ledger-core/src/lib.rs

@@ -89,9 +89,9 @@ pub use reports::{
     AssetRegister, AssetRegisterRow, BalanceSheet, BalanceSheetStatement, ClassProfitAndLoss,
     GeneralLedger, LedgerAccount, LedgerPosting, MemberCapital, MemberEquityColumn,
     MembersEquityStatement, ProfitAndLoss, ProfitAndLossStatement, ProjectFigures, ProjectToDate,
-    StatementLine, TrialBalance, TrialBalanceLine, balance_sheet_as_of, fixed_asset_register,
-    general_ledger, members_equity, profit_and_loss_for_period, project_entries, project_figures,
-    project_to_date, trial_balance_as_of,
+    StatementLine, TrialBalance, TrialBalanceLine, balance_sheet_as_of, contribution_margin_pct,
+    fixed_asset_register, general_ledger, members_equity, profit_and_loss_for_period,
+    project_entries, project_figures, project_to_date, trial_balance_as_of,
 };
 pub use schedules::{
     AmortizationSchedule, Frequency, NewRecurring, NewSchedule, RecurringEntry, RecurringId,