0.7.4

Fixed

• Engine-shipped description fields no longer carry an em dash. The intelligence-architect agent and the intelligence-authoring rule described themselves with an em dash, and the intelligence-add-agent frontmatter template modelled one - so every consumer that inlines a description into a registry (AGENTS.md, the agent and skill pickers) inherited it, which is wrong for a project whose house voice forbids the character. A description is compact metadata reproduced verbatim across every tool, so these are plain hyphens now; the em-dash voice in prose bodies is unchanged. No schema change - the stamp advances to 0.7.4 on update.