Add first CI lint gate (fmt + clippy + test), pin Rust 1.98.1 - #77
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This repo has never had a .github/workflows/ directory. Adds .github/workflows/lint.yml with three jobs scoped to native/lgj-abi (the only Cargo crate in the repo; the Java side has no build system at all — see java/README.md, "no Maven, no Gradle"): - format: cargo fmt --check - clippy: cargo clippy --all-targets -- -D warnings - rust-test: cargo test --all-targets, which runs tests/g11_contract_import_fence.rs — the structural enforcement of the G11 contract-import allowlist that CLAUDE.md's own history notes was "prose until 2026-09-03" because nothing ran the test that proves it. lgj-abi path-deps ndarray, lance-graph's lance-graph-contract, and (optionally, off by default) OGAR's ogar-class-view. Cargo resolves the full dependency graph including inactive optional path deps, so all three siblings are checked out for clippy/rust-test, mirroring AdaWorldAPI/lance-graph's own .github/workflows/style.yml pattern exactly (self into a named subdir, each sibling into its own subdir under the same workspace root). Also adds rust-toolchain.toml pinning channel = 1.98.1 with rustfmt + clippy components, joining the workspace-wide 1.98.1 sweep already carried by the ndarray / lance-graph / OGAR sibling repos. The workflow's setup-rust-toolchain step takes no toolchain: input, so this file is the single source of truth for the pinned version. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AGVLyRZNEKKBSfBDJfbY3V
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📝 WalkthroughWalkthroughAdded GitHub Actions checks for ChangesRust CI
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🔵 Low · up to The new Rust CI workflow may run with an unpinned stable toolchain rather than Rust 1.98.1, reducing reproducibility and potentially producing inconsistent checks. Its inventory documentation also inaccurately describes branch push coverage. Sequence Diagram(s)sequenceDiagram
participant GitHubActions
participant RustToolchain
participant Cargo
participant SiblingDependencies
GitHubActions->>RustToolchain: Load Rust 1.98.1 with rustfmt and clippy
GitHubActions->>SiblingDependencies: Check out path dependencies
GitHubActions->>Cargo: Run format, Clippy, and Rust test jobs
Cargo->>Cargo: Validate lgj-abi targets and contract-import fence
Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AGVLyRZNEKKBSfBDJfbY3V
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September 5, 2026 20:05
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Inline comments:
In @.claude/board/PR_ARC_INVENTORY.md:
- Around line 19-20: Update the G11 contract-import fence trigger statement in
PR_ARC_INVENTORY.md to say it runs on every pull request and every push to main,
replacing the inaccurate “every push/PR” wording.
In @.github/workflows/lint.yml:
- Line 39: Update all three actions-rust-lang/setup-rust-toolchain@v1
invocations in .github/workflows/lint.yml at lines 39, 72, and 106 to set
rust-src-dir to lance-graph-java, so each setup action reads the repository’s
pinned Rust toolchain configuration.
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.claude/board/LATEST_STATE.md.claude/board/PR_ARC_INVENTORY.md.github/workflows/lint.ymlrust-toolchain.toml
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The first CI run of this gate went red, and both causes are the same shape: something is declared twice and cargo silently picks whichever copy is nearest the working directory. A `rust-toolchain.toml` was added at the repository root carrying the sentence "the pin lives in exactly ONE place", while `native/lgj-abi/rust-toolchain.toml` already existed pinning 1.97.1. The root file is removed and the crate-level file is the authority, bumped to 1.98.1. That bump is forced rather than cosmetic: ndarray 0.17.2 now declares `rust-version = "1.98"`, so a 1.97.1 resolve of this crate fails outright. The failing test is the more interesting half. `native/lgj-abi/.cargo/config.toml` pins `-Ctarget-cpu=x86-64-v4`, and `the_x86_64_build_has_a_vector_baseline` exists to turn a lost baseline into a legible test failure instead of a SIGILL inside a JVM downcall. The jobs ran cargo from the repository root with `--manifest-path` pointing into the crate, and cargo reads `.cargo/config.toml` from the working directory's ancestry, never from the manifest's directory. The baseline was never applied, the manifest reported the scalar backend, and the test fired exactly as designed. `--manifest-path` is not equivalent to running in the crate directory. So the jobs now set `working-directory` to the crate, and CI exports `CARGO_BUILD_RUSTFLAGS=-Ctarget-cpu=x86-64-v3` on top: GitHub-hosted runners do not guarantee AVX-512, and a v4 build would die on them with the very fault that config comment describes. v3 still satisfies the test's `AVX2 | AVX512` assertion, so the gate is retargeted, not weakened. Verified on both sides locally: the old invocation reproduces the failure, the new one passes 138 unit tests plus the G11 contract-import fence, with `cargo fmt -- --check` and `cargo clippy --all-targets -- -D warnings` clean. Board: EPIPHANIES gains the finding; LATEST_STATE gains a storno correcting two claims in the entry this PR wrote an hour ago. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AGVLyRZNEKKBSfBDJfbY3V
A review finding on this PR, verified against the action's own documentation: `defaults.run.working-directory` governs `run:` steps only. Each `actions-rust-lang/setup-rust-toolchain` step executes from GITHUB_WORKSPACE, where this repository is a subdirectory and no toolchain file is visible, so it would silently install `stable` instead of the pin. `rust-src-dir` is the input that points it at the crate — the same directory that now holds the single `rust-toolchain.toml`, beside `.cargo/config.toml`. The reviewer's suggested value was the repository root, which was correct against the commit it read. It is the crate directory here, because the root toolchain file was removed in the previous commit rather than kept in sync. The board's PR entry gains an appended correction rather than an edit, per its own append-only rule, covering the four claims that first entry got wrong: the repo did have a toolchain pin, the push trigger is limited to `main`, `--manifest-path` is not equivalent to running in the crate directory, and `-D warnings` is no longer unmeasured. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AGVLyRZNEKKBSfBDJfbY3V
The previous commit set the CI baseline as `CARGO_BUILD_RUSTFLAGS`, and the run showed it having no effect: the toolchain resolved to 1.98.1 as intended, and the crate's SIGILL-guard test still failed with no baseline at all. `CARGO_BUILD_RUSTFLAGS` is the environment spelling of `build.rustflags`, and `RUSTFLAGS` overrides it. The toolchain action exports `RUSTFLAGS` from its own `rustflags` input, which defaults to `-D warnings` — visible in the run log as `_srt_NEW_RUSTFLAGS: -D warnings` written into `GITHUB_ENV`. So the baseline was set, then discarded, in every job. Moved onto the action's `rustflags` input, keeping its default alongside rather than replacing it. Reproduced and verified both ways locally against the same commands CI runs: with `-D warnings` alone the guard test fails exactly as it did on the runner; with the baseline added it passes and the crate is 138 tests green plus the G11 fence. Worth stating plainly, because this is the third instance in one PR of the same shape: a setting can be present, correct, and inert because something nearer the point of use wins. Two toolchain files where cargo takes the nearest. A config file cargo reads from the working directory rather than the manifest. And now an env var an action overwrites. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AGVLyRZNEKKBSfBDJfbY3V
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Summary
This repo has never had a
.github/workflows/directory. Adds.github/workflows/lint.ymlwith three jobs scoped tonative/lgj-abi(the only Cargo crate in the repo):cargo fmt --manifest-path native/lgj-abi/Cargo.toml -- --checkcargo clippy --manifest-path native/lgj-abi/Cargo.toml --all-targets -- -D warningscargo test --manifest-path native/lgj-abi/Cargo.toml --all-targets, which runstests/g11_contract_import_fence.rs— the G11 contract-import allowlist test thatCLAUDE.md's own history notes was "prose until 2026-09-03" because nothing had ever run it in CI.lgj-abipath-depsndarray,lance-graph'slance-graph-contract, and (optionally, off by default)OGAR'sogar-class-view. Cargo resolves the full dependency graph including inactive optional path deps, so all three sibling repos are checked out for theclippy/rust-testjobs, mirroringAdaWorldAPI/lance-graph's own.github/workflows/style.ymlpattern (self checked out into a named subdirectory, each sibling into its own subdirectory under the same runner workspace root).Also adds
rust-toolchain.tomlpinningchannel = "1.98.1"withrustfmt/clippycomponents, joining the workspace-wide 1.98.1 sweep already carried by thendarray/lance-graph/OGARsibling repos. Thesetup-rust-toolchainstep takes notoolchain:input, so this file is the single source of truth for the pinned version.Java
Deliberately left out of this PR.
java/contains onlyREADME.mdand.gitignore— nopom.xml, nobuild.gradle, no source files at all. The README states this explicitly: "There is no Maven, no Gradle, no downloaded dependency, and no C toolchain.javacandjavaare the entire Java toolchain." There is no build/check/verify command to wire because there is no Java build system yet. Filed as a named follow-up: once real Java sources + ajavac/java-based check script land, CI should gain a Java job — guessing a Gradle/Maven command against a build system that doesn't exist would produce a CI job that fails for the wrong reason.Board hygiene
Per
.claude/board/README.md, this PR's board-hygiene commit updatesLATEST_STATE.md(what exists now) andPR_ARC_INVENTORY.md(this PR's Added/Locked/Deferred/Docs/Confidence entry, at open).If
-D warningscomes back redPer this workspace's own tiered posture (see e.g.
lance-graph'sstyle.ymlTier A/B split): if the first real CI run surfaces pre-existing clippy debt this PR did not introduce, the follow-up iscontinue-on-error: trueon the clippy step plus a namedTECH_DEBT.mdentry — never a mass auto-fix bundled into this PR. Not pre-emptively weakening the gate here since the crate's actual clippy state under--all-targets -D warningshas not been measured (disk constraints prevented runningcargo build/check/clippylocally — the contract dep pulls a large tree; this PR's own CI run is the first real measurement).Test plan
formatjob passesclippyjob passes (or, if red on pre-existing debt, gets the tieredcontinue-on-error+TECH_DEBT.mdfollow-up per above)rust-testjob passes, includingg11_contract_import_fence🤖 Generated with Claude Code
https://claude.ai/code/session_01AGVLyRZNEKKBSfBDJfbY3V
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