ci: bump ptoas to v0.55

[chenshengxin2026]

Summary

• Bump the PyPTO-owned PTOAS pin from v0.54 to v0.55.
• Update the aarch64 and x86_64 archive SHA-256 values in toolchain/versions.env.
• Leave the runtime and PTO-ISA pin unchanged; the runtime does not use PTOAS.

Checksums

Architecture	SHA-256
aarch64	bc37efa0e30907bfac1816c78a0a94e629f25999fd533f3ed0d02f71e0282c8a
x86_64	5b1317a63eea0531ffb6b344effd1cec2a0fbc200d64925b730b4ca43932ee4e

Validation

• Confirmed v0.55 is a non-draft, non-prerelease PTOAS release with both required binary assets.
• Downloaded both archives, matched their sizes and SHA-256 values to GitHub release metadata, and passed gzip integrity checks.
• Recomputed the current v0.54 aarch64 hash and matched the existing pin, validating the download-and-hash method.
• Verified versions.env is shell-sourceable, git diff --check passes, and workflow anti-hardcoding guards remain clean.
• Independent config review passed; code tests are not applicable to this metadata-only change.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: d3fa539f-f773-4ca8-bc06-bdc47bed6818

📥 Commits

Reviewing files that changed from the base of the PR and between 6730e96 and 7fd6ed2.

📒 Files selected for processing (1)

• toolchain/versions.env

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📝 Walkthrough

Walkthrough

The toolchain configuration updates PTOAS from v0.54 to v0.55 and replaces the AArch64 and x86_64 SHA-256 checksums.

Changes

PTOAS toolchain update

Layer / File(s)	Summary
Update PTOAS version and checksums toolchain/versions.env	Sets PTOAS_VERSION to v0.55 and updates both architecture-specific checksums.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• hw-native-sys/pypto#2135: Updates the PTOAS release and architecture-specific checksums in the same configuration file.

Poem

A rabbit checks the toolchain bright,
PTOAS hops to a newer height.
Two hashes change, both paths align,
AArch64 and x86 shine.
“v0.55!” the bunny sings,
Clean builds flutter on their wings.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the CI change and the PTOAS version bump from v0.54 to v0.55.
Description check	✅ Passed	The description directly explains the PTOAS version bump, checksum updates, unchanged pins, and validation results.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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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