Confirm publish artifact and release flow for packaged zsh repo

[ss-o]

Context

The workspace now distinguishes continuous-deploy repositories from semantic-tag release repositories. Before adding any release automation to z-shell/zsh, confirm whether the repository has a real user-facing artifact to publish or whether validation-only CI is sufficient.

Scope

• confirm whether the repository has a publishable artifact
• if yes, define the release trigger (v*.*.* semantic tag)
• add or update CI only after the release contract is clear
• keep main as continuous validation only unless the repository is reclassified

Suggested tracker fields

• Item type: Task
• Priority: Medium
• Effort: Medium
• Status: Backlog