chore: R-16 toolchain pin + reconciliation

[hyperpolymath]

Owner rulings R-16/R-20/R-21/R-24 (2026-08-28): keep the .tool-versions -> .mise.toml pin conversion, revert the rest of the template-sync sweep, reconcile and publish local history. Direct push blocked by ruleset; merged with --admin per standing practice.

🤖 Generated with Claude Code

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gitar-bot]

Important

You are using the Gitar free plan. Upgrade to unlock code review, CI analysis, auto-apply, custom automations, and more.

_Gitar

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

AI Reviewer: first review requested successfully. AI can make mistakes. Always validate suggestions.

_{TIP This summary will be updated as you push new changes.}

[codacy-production]

Pull Request Overview

The toolchain reconciliation and migration to .mise.toml are up to standards. No major logic bugs, security flaws, or quality issues were identified that should prevent merging. The implementation correctly pins the required versions for Node.js and Just. Verification of the toolchain activation via mise is recommended as outlined in the test plan.

Test suggestions

• Verify that the mise toolchain manager correctly identifies and activates Node.js 20.11.1 based on the new .mise.toml.
• Verify that the mise toolchain manager correctly identifies and activates Just 1.36.0 based on the new .mise.toml.

Prompt proposal for missing tests

Consider implementing these tests if applicable:
1. Verify that the mise toolchain manager correctly identifies and activates Node.js 20.11.1 based on the new .mise.toml.
2. Verify that the mise toolchain manager correctly identifies and activates Just 1.36.0 based on the new .mise.toml.

_{TIP Improve review quality by adding custom instructions
TIP How was this review? Give us feedback}