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. All changes are additive and isolated to the new riscv64 platform target; no existing build paths are altered.

The new matrix entry, platform package, and dependency wiring all mirror the proven linux-arm64-gnu pattern with only the necessary deviations (system GCC instead of napi-cross, explicit linker env vars). No existing targets, build steps, or publish logic are changed.

No files require special attention.

_{Reviews (3): Last reviewed commit: "Merge branch 'tailwindlabs:main' into ri..." | 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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[sharaddh]

fine