feat(checker): examples() and spec_files() carry the specification's files

A consumer of the checker crate needs no path into this repository.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp

target/doc/search.index/desc/8ec65d0e5d.js

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+rd_("CgIts number in <code>docs/spec/rules.md</code>, 1 to 45.AhIts bookspec identifier.BoStable, never reused; the file is named for it.AiIts name in this example.0BdThe example\xe2\x80\x99s id, when it has one.AcThe example\xe2\x80\x99s id.Cg<code>members</code> or <code>retained_earnings</code>.AlA period query\xe2\x80\x99s last day.AfA period\xe2\x80\x99s last day.CfEvery area, in the order the specification lists them.BfThe area\xe2\x80\x99s key in a rule identifier.BjThe status as the specification writes it.BcThe key the example spells it with.BiThe outcome as the words a report prints.EgThe identifier of area <code>area</code>, rule number <code>n</code> (counting from \xe2\x80\xa6CiA refusal of <code>reason</code> under <code>rule</code>.DhThe claims of an engine that claims <code>rules</code>, with no choices.A`An empty engine.EbRun <code>examples</code> against engines made by <code>make</code>, one fresh \xe2\x80\xa6AgWhat differs, in words.hWhy not.ChReceivables and payables: documents, aging, settlements.CiOne of bookspec\xe2\x80\x99s areas: the subject a rule belongs to.gA bill.CjThe engine claims the rule and an example failed, or a \xe2\x80\xa6CeThe engine claims the rule and every example that \xe2\x80\xa6BfA list of rows, each a list of fields.AnOne rule of the specification.AgThe area it belongs to.iIts area.6iIts code.AeThe account\xe2\x80\x99s code.BeThe account a command names, by code.AlThe account a command names.BbIts cost, an exact decimal string.mIts new cost.ChThe day of an entry, a reversal, a close, a bill, an \xe2\x80\xa6C`<code>1099-NEC</code> or <code>1099-MISC</code>.AoReturns the argument unchanged.0000000000000000000000000000000000000000CfA period query\xe2\x80\x99s first day, <code>YYYY-MM-DD</code>.CfA period\xe2\x80\x99s first day (raw, <code>YYYY-MM-DD</code>).2222BaCalls <code>U::from(self)</code>.00000000000000000000000000000000000000000000ChWhich of the event\xe2\x80\x99s kinds it is, or why it is not \xe2\x80\xa6Eg<code>internal</code>, <code>client</code>, <code>on_spec</code> or <code>other</code>.Fn<code>asset</code>, <code>liability</code>, <code>equity</code>, <code>revenue</code> or <code>expense</code>.Cn<code>prepaid_expense</code> or <code>deferred_revenue</code>.Ga<code>bank</code>, <code>business_card</code>, <code>member_card</code>, <code>member_cash_or_check</code> or \xe2\x80\xa6CfSet the books up: the chart, the fixed assets, the \xe2\x80\xa6AdIts name, once each.iIts name.CkThe member\xe2\x80\x99s name; a party\xe2\x80\x99s, with the member role, \xe2\x80\xa622mIts new name.CiThe new name a <code>rename_account</code> command gives.AcThe query\xe2\x80\x99s name.BjThe rule whose symbolic form derived them.BiThe rule whose symbolic form was applied.CmThe rule\xe2\x80\x99s entry in the catalogue, if the specification \xe2\x80\xa6BiThe bookspec rule the refusal belongs to.BbThe rule <code>b</code> (1 to 45).CnThe normative sentence the example demonstrates: what MUST \xe2\x80\xa6Ej<code>purchase</code>, <code>carryover_723</code> or <code>personal_use_conversion</code>.Bj<code>debit</code> or <code>credit</code>.AnApplicability tags, non-empty.B`Fixed assets and capitalization.AdA close of a period.ChThe mechanics of an entry: lines, sides, amounts, dates.ChOne event: an entry, a reversal, a close, a bill, an \xe2\x80\xa6DaThe oracle container (<code>just oracle</code> builds it from \xe2\x80\xa6BdAn entry, by its <code>lines</code>.A`A list of lines.ChThe question an expectation asks: everything but the \xe2\x80\xa6BhThe party roles the specification names.BoThe books an example sets up, before any event.ChThe event after which it is made (1 to the number of \xe2\x80\xa6CiThe books after event N, not after the last (a format \xe2\x80\xa6CkThe books after event N (the runner has already applied \xe2\x80\xa6CnApply one event: an entry, a reversal, a close, a bill, an \xe2\x80\xa6AgAn as-of query\xe2\x80\x99s day.0AoA <code>setup.assets</code> id.00E`The fixed asset a <code>disposal</code>, <code>depreciation_schedule</code>, \xe2\x80\xa6AfThe asset asked about.Bj<code>accrual</code> or <code>cash</code>.ChHow the company got it and the facts its tax figures \xe2\x80\xa6Eh<code>party_totals</code>\xe2\x80\x99 basis: <code>cash</code> or <code>all</code> (B-35 item 4).Bc<code>party_totals</code>\xe2\x80\x99 basis.AdA close of a period.EeThe event whose entry an <code>entry</code> or <code>party_part</code> query asks \xe2\x80\xa6BeThe event whose entry is asked about.DlThe <code>run_depreciation</code> event a <code>run</code> query asks about.BnThe event a <code>run</code> query asks about.ClThe specification\xe2\x80\x99s own files, carried by the crate: a \xe2\x80\xa6AeIts label, once each.C`The card\xe2\x80\x99s or account\xe2\x80\x99s last four, if known.AcAn entry\xe2\x80\x99s lines.jIts lines.0CjAn entry as an earlier version could write it and this \xe2\x80\xa6CaThe party it belongs to, by name (informational).EdParse <code>BS-&lt;area&gt;-&lt;nLine truncated