fix(downloads): never surface research-edition releases as the beta

[ErikBjare]

Summary

v0.14.0b3-research is a published prerelease with a newer created_at than standard v0.14.0b3, so on the next site build update-downloads.py would have picked it as "the latest pre-release" and offered Research Edition builds (privacy filter enabled by default) to regular beta users on /downloads.

Fix: filter releases to an allowlist of standard version tags (^v\d+\.\d+\.\d+(?:(?:a|b|rc)\d+)?$) before selecting stable/prerelease. An allowlist also keeps any future suffixed variants out, not just -research.

Test plan

• Ran scripts/update-downloads.py against the live API: now selects Stable: v0.13.2; newer pre-release: v0.14.0b3 (previously would pick v0.14.0b3-research, the newest prerelease by created_at).

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[greptile-apps]

Greptile Summary

The PR restricts download generation to standard ActivityWatch version tags so special editions cannot be selected as the public beta.

• Adds an allowlist for stable, alpha, beta, and release-candidate tag formats.
• Applies the allowlist before selecting the latest stable and prerelease downloads.

Confidence Score: 5/5

The PR appears safe to merge, with no actionable defects identified in the changed release-selection behavior.

The allowlist excludes the research-edition suffix as intended while accepting the standard stable and prerelease tag formats used by current and historical releases.

Important Files Changed

Filename	Overview
scripts/update-downloads.py	Adds a narrowly scoped release-tag filter that excludes suffixed editions while preserving the repository’s established standard tag formats.

_{Reviews (1): Last reviewed commit: "fix(downloads): never surface research-e..." | Re-trigger Greptile}