Plugin incompatible with IntelliJ Platform 2026.1 (build 261.x) — "requires IDE build 253.* or earlier"

[tuchorc]

Describe the bug

The "spek - OpenSpec Viewer" plugin cannot be installed/enabled on current 2026.1.x JetBrains IDEs. The IDE reports:

Incompatible: requires IDE build 253.* or earlier

This suggests the plugin's until-build constraint in plugin.xml hasn't been updated past the 253.x branch, so it's being blocked on newer platform versions even though there's likely no actual incompatibility.
Environment

IntelliJ IDEA 2026.1.3, Build #IU-261.25134.95 (built June 3, 2026)
WebStorm 2026.1.3, Build #WS-261.25134.101 (built June 4, 2026)
Plugin: spek - OpenSpec Viewer, latest version from JetBrains Marketplace (Plugin ID tw.kewang.spek)

Steps to reproduce

Open IntelliJ IDEA 2026.1.3 or WebStorm 2026.1.3
Go to Settings → Plugins → Marketplace
Search for "spek - OpenSpec Viewer" and attempt to install (or try installing the latest version manually)
IDE blocks installation/enabling with the "requires IDE build 253.* or earlier" message

Expected behavior

The plugin should install and run normally on current IDE builds (261.x), consistent with the VS Code extension, which appears to be actively maintained and updated (latest npm/marketplace release dated June 2026).

#Additional context

• Repo: https://github.com/kewang/spek
• The VS Code and Open VSX listings for spek seem up to date, so this looks like the JetBrains plugin's until-build value in plugin.xml / build.gradle.kts simply needs bumping to track newer IntelliJ Platform releases — possibly an oversight rather than a real compatibility issue.

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Generated by Claude Code