Add riscv64 (linux-gnu) prebuilt binary

[gounthar]

Adds riscv64gc-unknown-linux-gnu to the oxide release matrix so a prebuilt @tailwindcss/oxide-linux-riscv64-gnu package gets published. There is no riscv64 binary today, so on riscv64 Linux boards @tailwindcss/oxide can't load its native module, and anything pulling Tailwind v4 (the CLI, the Vite plugin, PostCSS) is stuck there.

Changes

• .github/workflows/release.yml: a new matrix entry mirroring the aarch64 cross entry. napi-cross (@napi-rs/cross-toolchain) doesn't ship a riscv64 toolchain, so this one uses the system gcc-riscv64-linux-gnu plus the matching linker env instead of --use-napi-cross, and strips with riscv64-linux-gnu-strip.
• crates/node/package.json: register riscv64gc in napi.targets and add the optionalDependency.
• crates/node/npm/linux-riscv64-gnu: the new platform package, mirroring linux-arm64-gnu.
• pnpm-lock.yaml: the new workspace package.

Verification

• Cross-compile on ubuntu-latest with the recipe in this PR produces tailwindcss-oxide.linux-riscv64-gnu.node (ELF 64-bit RISC-V).
• A native build on a real riscv64 board produces the same artifact, loads it (the Scanner export is there), and runs.

One thing worth flagging: napi-cross supports arm/arm64/x64/s390x/ppc64le but not riscv64 yet, which is why this entry uses the system cross toolchain rather than --use-napi-cross like your other Linux targets. If you'd rather it followed the napi-cross path once that gains riscv64, or want it done another way, happy to adjust.

[greptile-apps]

Confidence Score: 5/5

Safe to merge — the change is purely additive, adding a new optional platform binary that existing users do not depend on.

All new code follows the established pattern for cross-compiled Linux platform packages. The toolchain installation step is correctly gated, the artifact copy and npm package metadata are consistent with existing targets, and there is no risk to the builds of already-supported platforms.

.github/workflows/release.yml — the three cross-compiler env vars are unconditionally present in every matrix job (evaluating to empty string on non-riscv64 targets), which is a style inconsistency already raised in a previous review thread but has no runtime impact.

_{Reviews (2): Last reviewed commit: "ci(oxide): scope riscv64 cross env to th..." | Re-trigger Greptile}

[coderabbitai]

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Reviewing files that changed from the base of the PR and between 745440b and 2630fc0.

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• .github/workflows/release.yml

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• .github/workflows/release.yml

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Walkthrough

This pull request adds support for the RISC-V 64-bit architecture (riscv64gc-unknown-linux-gnu) to the Tailwind CSS Node.js binding build pipeline. The release workflow is extended with a new Linux build matrix entry, conditional RISC-V toolchain installation, and architecture-specific environment variables for the Rust compiler. A new npm package (@tailwindcss/oxide-linux-riscv64-gnu) is introduced to distribute the compiled RISC-V binary, and the root workspace package is updated to register the target and declare the optional dependency.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding riscv64 Linux GNU prebuilt binary support to the release pipeline.
Description check	✅ Passed	The description is detailed and directly related to the changeset, explaining the motivation, specific changes made, and verification performed.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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