feat(system-builder): the builder's MY SYSTEMS page, as a component (…

[over2take]

…4a2c2a)

components/MySystemsPage.tsx, from the approved mockup builder-my-systems (2026-10-06): tabs YOUR SYSTEMS / + NEW / INSTALL A FILE; each system a line item (name, OPEN NOW or version, description or 'No description yet', lineFacts, badges) opening out in place with OPEN, RENAME (refusals kept in the box), DUPLICATE (opens the copy out), EXPORT and DELETE (confirmed; off for the running system and the one open in the builder). + NEW opens what it makes on SETUP; INSTALL A FILE offers OPEN IT.

NEW and INSTALL move from SystemsWindow into components/SystemsPanels.tsx unchanged, shared by both until SYSTEMS.EXE is retired. systemsLibrary gains the list's description / author / characterCount, lineFacts, NO_DESCRIPTION, and deleteBlocked's open-in-builder reason. Not wired into the builder yet (4a2c2b).

Summary

Test plan

• Tested locally
• Tests pass

Pre-merge checklist

Code quality:

• Code follows project style
• No breaking changes (or clearly documented)
• No console errors or warnings

Version & Release:

• Version bumped? If releasing to users, update:
  • frontend/package.json version
  • docker-compose.yml APP_VERSION
  • CHANGELOG.md with release notes
• GitHub Actions will auto-tag Docker images with the new version

Before merging to main:

• All tests passing
• PR reviewed and approved
• Branch is up to date with main
• No merge conflicts

Related issues