Max-testing pass, step 8. The final mutation run left 112 survivors
(89% caught). Three agents triaged them by file, by the playbook's
table: spec the boundary then test it, a law rather than one more
pinned value, assert the real value, never weaken a test. Every expected
value is hand-computed.
- reports.rs (35): 28 killed, chiefly cash flow (inclusive start date,
each line's sign and label, a loss on disposal moving to investing,
financing designation), general ledger and members' equity date
boundaries, and the balanced() checks (a real report nudged by a cent
must stop balancing). 7 equivalent: four >/>= after an early return on
zero; two in dead code (removed in this commit); one sign of a zero
cleaned on output.
- ledger.rs, kernel.rs, journal.rs, money.rs (52, plus one new): 49
killed, including every replay_* mutant at the core level (ids,
accumulation, status, vendor tags, out-of-order refusal), FX rates,
0%/100% deductible boundaries, a dividend sweep with no income, the
legacy member rounding at close, a bill paid on its own date, a
liability-account reconciliation, mixed-currency entries (via serde),
ISO 4217 minor units, Display/Debug. 3 equivalent: zero refused before
a </<= check; a period whose end is in a closed period refused earlier;
columns(0).
- schedules, tax, analysis, payouts, assets, form1099 (25): 23 killed
(schedule length 1-600, recurring end on its start, frequency parsing
and stepping, cost of goods in tax net, a zero payout, disposal on the
purchase date, quarter starts, labels); 2 equivalent (zero adds zero;
days_held is provably >= 1).
Two small production cleanups the triage surfaced: kernel::columns(0)
returned a negative-zero credit that would print "-0" (regression
a_zero_movement_has_no_negative_zero_column, shown to fail before); and
cash_flow computed a book value it never used.
Spec lines added where a boundary wasn't specified (cash flow's
inclusive start and line signs, members' equity start date, payout with
no deposit, disposal on the purchase date, bill paid on its own date).
`just mutants` now runs core and store tests (the store's replay tests),
not the whole workspace, which rebuilt the viewer for every mutant.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GWVo7x3UHw5kwCUaWxiejX
egui/wgpu app for owners and their accountant: Overview, Cash, Profit,
Transactions (with rendered receipts and journal history), Reports
(statements with interval columns, comparisons, drill-down), Accounts,
Documents, Company, Journal; Ctrl+K palette; back/forward; light/dark.
Follows the journal live (~30 ms from write to screen). --demo opens a
deterministic demo company, also used for screenshot tests.
Engine: ledger-store Snapshot (read-only, incremental, tolerant of a
half-written tail); ledger-core analysis (intervals, balance series,
P&L by interval, cash flows); ledger-config extracted from ledger-mcp
with the full company profile and cash_accounts.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MtYEaR6M6Ybdhm6X98BWNu
swaitsandClaude Opus 5.5