Release v0.13.0 (minor) and bump versions in agynio/bootstrap

[rowan-stein]

User request

Create a new minor release in repo agynio/platform and bump versions in repo agynio/bootstrap.

Specification (from research)

• Latest platform release/tag: v0.12.0 (SemVer with 'v' prefix). Releases are manual; tag triggers GH Actions to publish GHCR images (platform-server, platform-ui) with tags like X.Y.Z.
• Proposed next minor: v0.13.0.
• Notable commits since v0.12.0:
  • Fix env editor focus + delete handling (Fix env editor focus + delete handling #1311)
  • fix: preserve node config whitespace (fix: preserve node config whitespace #1310)
• Release notes: follow docs/CHANGELOG_TEMPLATE.md; minimal notes are acceptable.
• Bootstrap coupling points:
  • agyn/docker-compose.yaml pins images:
    • ghcr.io/agynio/platform-server:0.11.0
    • ghcr.io/agynio/platform-ui:0.11.0
  • After release v0.13.0, bump to 0.13.0.

Plan

1. Cut v0.13.0 on agynio/platform using GitHub Release (creates tag), include minimal notes; tag prefix 'v'.
2. Verify GH Actions publish GHCR images for 0.13.0.
3. In agynio/bootstrap, update agyn/docker-compose.yaml to use:
   • ghcr.io/agynio/platform-server:0.13.0
   • ghcr.io/agynio/platform-ui:0.13.0
     Open a single PR with this change.
4. Monitor CI and merge when green and reviewed.

This issue tracks the full workflow; the bootstrap PR will reference this issue.