Manifest sync across csproj, yaml, repo.json, README, CHANGELOG,
ROADMAP and the Plugin.cs schema-gate error message. ROADMAP also gets
the v1.4.4 release block that was missed in that cycle's closure.
Forge-post v1.4.5.md follows the established frontmatter + DE-body
convention; the EN block is sourced from the yaml changelog by the
forge-announce workflow.
