fix: support more awk variants in install script

[hhhjin]

Summary

• rewrite the release tag selection awk condition to avoid syntax errors on some awk implementations
• keep the installer behavior the same while restoring curl ... | sh installs
• add a patch changeset describing the install-script fix

Testing

• bun run lint:fix

[gemini-code-assist]

Summary of Changes

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This pull request addresses a critical compatibility issue within the installation script, specifically targeting the awk command used for resolving release tags. By refactoring the awk condition, the script now supports a wider range of awk implementations, ensuring that curl | sh installations function correctly across different environments without altering the core installation logic.

Highlights

• Awk Compatibility: Rewrote the release tag selection awk condition to prevent syntax errors on various awk implementations.
• Installer Behavior: Maintained the existing installer behavior while re-enabling curl ... | sh installations.
• Changelog: Added a new changeset entry detailing the install script fix.

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[gemini-code-assist]

Code Review

This pull request includes a changeset file indicating a patch for @syncdown/cli to fix an issue where the install script failed on certain awk implementations when resolving the latest CLI release tag. The corresponding code change in scripts/install.sh involves reformatting a multi-line if condition within an awk script, adjusting line breaks and parentheses without altering the logical expression itself.