agent: builder model: opus max_turns: 80 budget_usd: 22 —
yaml escapes decoded once in the grammar, taking over wip/y5-escapes-in-the-grammar (owner’s decisions 2026-10-30)Read first: ADR-yaml-1 D4 (its last bullet: Scalar’s value is a private field read through text(), decoded with a binding inside text(..)) and D11, docs/briefs/yaml/y5-escapes-and-radix.md (step 2 there is this brief’s work; its report and debrief beside it), then packages/yaml/src/main.nika.
#1013 is on develop: git log origin/develop --oneline --grep "#1013" names the fix, and tests/compiler/tests/grammar_text_binds_its_inner_parts.nika exists. Absent: Result: blocked, Needs: y6-1013-text-bindings.s:text(parts:DoublePart*) with a guard and scalar::from(v) in a part’s action) builds at the default unproved-claims = "error" and check --asserts lists scalar::from as proved. Not proved: Result: blocked, Found: the probe.wip/y5-escapes-in-the-grammar (72df62ae) branches from before 7cde2178 (0x/0o), so apply its yaml changes three-way, never a checkout of the branch in the shared tree: git diff 72df62ae~1 72df62ae -- packages/yaml/src packages/yaml/tests | git apply -3; resolve against develop’s as_i64/as_f64; leave its nikaia.lock change out (regenerated by the build, commit it only if the package’s lock is tracked and changed).peek(text(..)) (refused) with s:text(parts:DoublePart*); Scalar gets a private value: String (owned for a double-quoted scalar with an escape or a line break, a view otherwise, ADR-282 D12-D14), text() returns it for Double and folds Plain/Single on request; escaped() and the lazy decoding go; no second check of the digits anywhere (D11). If a struct of the package is named S, #1013 point 2 is fixed: keep the name.tests/quoted_scalars.nika gains "\x41", "é", " ", "\U0001F600"; tests/errors_carry_line_and_column.nika gains "\uD800", "\U00110000", "\x4G", "\u12" with line and column (YAML 1.2.2 5.7; the yaml-test-suite case where one exists). check --asserts on the package lists every scalar::from as proved: say so under Tests:.Done when the package gate is green, each step committed and pushed, the last commit Part of #928. Changelog: none (package only).
ParseError’s message holds raw newlines in its expected-token list; error_of reads line and column from it. --bless writes nothing for a test with no .stdout yet: create it empty first. A helper called from an action is sync.nikaia fmt can break a long rule line holding if(cond, "label") (#1015): check the file still parses after fmt; split the rule rather than drop the label, and say so in Body:.Bytes(..) as entry argument: bind with let, the ordinary form).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.std or the toolchain lacks stops the work: no code around it unless an ADR or Part I-III refuses it (name it). Else Result: blocked, Found: gap + probe, Needs: owner decision (CLAUDE.md, A missing form stops the work).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.Pushed: line names the pushed sha. A report without a Pushed: line, or with a placeholder left in (TC, DISK), is not done and cuts the batch (k3a1 2026-10-29: Result: done, nothing committed).NIKAIA_CACHE_LIMIT=2G target/fast/nikaia test --project packages/yaml green, and cargo test --profile fast -p nikaia --test it -- fmt::every_nika_file (it formats every .nika under packages/). For a change only under packages/yaml/ this is the gate the line above asks for; a change under crates/ runs the gate of .claude/agents/builder.md (#852) as well. target/fast/nikaia is built by the session hook; if it is missing, cargo build --profile fast -p nikaia once.Changelog: none, unless the brief changes crates/.Files not to touch: anything outside packages/yaml/ and the brief’s own report, unless the brief names it; never docs/briefs/batch.txt or a brief of another lane.
max_turns: commit and push every finished step, then report Result: partial with what is left under Needs:. Uncommitted work at the end is lost work (y4 ran out at 110)./home/user/Nikaia/docs/briefs/yaml/y5b-escapes.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 (redesign) for a brief with Shape: redesign and no Convert: line). 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 process event such as another session resetting or rewriting your files is no Found:, it goes under Needs: (m3a 2026-10-28); 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:, nor a test’s expected .stdout/.stderr taken from what the program really prints where the brief’s sketch of it was short or wrong, b934 2026-10-29: say so in Body:, nor a lowering that follows the ADR governing it where the brief’s expected lowering contradicts that ADR, b933 2026-10-29: name the ADR in Body:, nor re-keying an allow-list entry (KNOWN) whose hash changed for the same program and the same reason, b-fixforward-sweep2 2026-10-28: say so 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_01UVxJDveRM5qKZKyCqq6Y24