Migrate release-doc-sync consumers from @v1.0 to @v1 floating tag #27

The v1.0 floating tag was created in Phase 2a (PR #19) as a major-floating reference for release-doc-sync, before DTD#14's automation existed.

PR #26 (DTD#14 fix) added automation that maintains vMAJOR (v1) and vMAJOR.MINOR (v1.8) floating tags on every release. v1 now serves the same purpose v1.0 was created for.

v1.0 is stale at v1.8.3's commit and will not be updated by the new automation (which derives floats from current VERSION's MAJOR and MINOR, not from historic shapes).

Action: migrate 6 release-doc-sync consumers from @v1.0 to @v1:

• Docker-Developer-Tools/.github/workflows/release.yml
• Steam-Cursor-Plugin/.github/workflows/release.yml
• Home-Lab-Developer-Tools/.github/workflows/release.yml
• Monday-Cursor-Plugin/.github/workflows/release.yml
• CFX-Developer-Tools/.github/workflows/release.yml
• Unity-Developer-Tools/.github/workflows/release.yml

Each is a one-line change: @v1.0 → @v1.

After all 6 migrate, delete v1.0:

git push origin :refs/tags/v1.0

Until then, v1.0 stays stale at v1.8.3 (still functional, just not updated).

Standards documentation update (separate or bundled)

Document in standards/ that vMAJOR.MINOR is the recommended pinning convention and vMAJOR is auto-maintained as courtesy.