agent: builder model: opus max_turns: 110 budget_usd: 22 —
check into Nikaia (Part #125)Score: self-hosting lane (docs/priorities.md, owner’s direction 2026-10-27: moves first, largest Rust files first; #125, docs/selfhosting-plan.md Large files: project.rs and parser/mod.rs, row P2, the first slice it names). S=2 (~420 Rust lines, converter draft 100%), C~3-5 M (comparable: e12-4a).
crates/nikaia/src/project.rs pub fn check (:1894). After the analyses it calls lint_where_nothing_crosses (:2293), let_refuted_claims_through (:2262), let_unproved_claims_through (:2279) on &mut all (each: a switch word, then for every finding of one code set severity = Warning and push one note), then sync::check, renders, keeps the errors (findings: Vec<&check::Finding>, :1975) and builds the tally (:1989-2233): count(family) by code prefix, plural(n), one refused.push(format!(..)) per family, the others remainder, the may_not line, then Err(diagnostics::refuse(refused.join(", "))).check::Finding / check::Severity are CheckFinding / CheckSeverity of crates/nikaia-std/src/tools/check_state.nika (:387, :412), re-exported in crates/nikaia/src/check/mod.rs:45. Not findings.nika’s Finding (the plan’s row says so wrongly: use CheckFinding).write_proofs (:2385) and write_ledger (:2432): the --locked refusal texts (:2416, :2440, :2447). Only the texts move (functions taking the path as ref String); the file I/O stays Rust..stderr files of tests/compiler and tests/ (about 30): any change of wording is a failure, not a choice.crates/nikaia-std/src/tools/project_check.nika: project_check_summary(findings: ref Vec[CheckFinding], violations: i64) -> String (counts only severity == Error, returns the joined tally; check keeps Err(diagnostics::refuse(..)) and the early return when there is nothing), the three filters as project_check_lint_where_nothing_crosses(findings: mut Vec[CheckFinding], user_parallelism: ref String) and the two let_*_through (an index loop: the iter_mut().filter has no Nikaia form; count and plural become functions), and the --locked texts as functions returning String. Keep the doc comments (they carry the ADR references). Run the converter first on a file holding exactly the moved Rust (rs2nika --profile check --file) and report --score under Rs2nika:.project.rs calls the lowered functions; the moved Rust is deleted. lower-std: only project_check’s lowered file and the index line in lowered.rs change. Add the row to scripts/self_hosting.py (as diffs.nika’s) and mark P2 built in the plan’s table (one line); report the % under Tests:.A lowering defect met is fixed in the compiler as its own commit with a test (Fix, do not work around, CLAUDE.md); if it is more than one step, stop and report it under Needs:.
nikaia test tests/compiler --both-settings; it tests filtered on refus claim locked parallelism sync; the guard set of .claude/agents/builder.md; clippy clean; lower-std fixpoint. Commit project: the refusal summary of check into Nikaia (P2), Part: #125. Changelog: none (a move).
An open design choice; a .stderr that would change; an error in another agent’s file.
Read docs/builder-facts.md.
docs/builder-facts.md first. develop in the main checkout; git status at start: other agents’ uncommitted files are not yours, never touch or stage them.git add <files> only; commit after each step; git push origin develop fast-forward, no rebase (rejected: report Pushed: rejected, go on committing).cargo fmt, cargo clippy --all-targets -- -D warnings, scripts/pre-push-check.sh, and the gate of .claude/agents/builder.md (#852).CHANGELOG.md, badges; no new NK code. New tests in Nikaia only; never the full suite. No foreground sleep, no polling; scripts in files.NIKAIA_CACHE_LIMIT=2G; at most two clones with target/ in the machine; delete your own clone’s target/ and target/release/nikaia-scratch at the end; report GB freed./home/user/Nikaia/docs/briefs/p2-project-check-summary.md.report.md)Fields of docs/architect.md, Briefs and reports: Result: done|noop|partial|blocked (the bare word alone on that line: Result: done, never a summary after it, which cuts the batch, b869a 2026-10-27; Owner: is a question for the owner or none, never a role), Files, Commit, Body (optional, one paragraph for the commit message), Fixes, Pushed, Tests, Gate (green|red), Deviation, Found, Needs, Changelog, Owner, Disk freed, and for a move Rs2nika: (the kept N of M lines of rs2nika --score, then the three costliest hand edits; none for a task that moves no Rust). none where nothing, and then the bare word: Deviation: none (a note) cuts the batch (batch.nika compares exactly); a note goes into the commit message. Found: is only for a defect outside your change (it cuts the batch); a converter draft that came out wrong is no Found:, it is one of the costliest edits under Rs2nika:, which the converter lane reads (e12-4b 2026-10-27); how you solved your own step goes into the commit message. Deviation: is only a step of the brief built otherwise than written or not built (a choice the brief left to you, such as keep what X needs and say so, is no deviation: it goes into the commit message; nor is building two steps in one commit when every step is built, e12-3a 2026-10-27, nor a step another commit on develop already built, shown by your test failing with that commit’s change reverted, b889 2026-10-27: name the commit in Body:); how you verified (e.g. a test not run against the unfixed compiler) goes under Tests:. A noop says why under Tests: (what was probed), not under Deviation:. Final answer, one line: done <sha>, report <path> (or BLOCKED: ... / PUSH REJECTED ...).
Attribution: Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com Claude-Session: https://claude.ai/code/session_01GFeMqxRbtUMiGVyDMxsvEq