Automate component releases through native Homeboy subtree publication #2070

Goal

Turn trunk changes into rolling component releases using the portable Homeboy release workflow. Move package split/publication from repository shell/YAML into native Homeboy component configuration.

Dependencies

• Native component subtree publication in the release pipeline Extra-Chill/homeboy#14837: native subtree publication and required release-plan integration.
• Support component-scoped monorepo releases and exact prepared release refs Extra-Chill/homeboy#17005: component-scoped reusable release workflow.
• Existing Split figma-transformer to Packagist so consumers stop vendoring the monorepo #1364: Figma standalone package publication; preserve its scope and clearly report any external mirror provisioning dependency.

Acceptance

• Independently release affected components under their existing tag namespaces, serialize shared branch mutations and retain release gates.
• PHP Transformer mirror publication is part of successful release, not dependent on another tag-triggered workflow.
• Optional dev-trunk mirror updates use the shared primitive, preserving current consumers.
• Notify SSI only after the relevant package is consumable; scope credentials explicitly.
• Portable configuration and thin workflows, with behavioral tests and an honest activation/credential checklist.
• Coordinate Figma and JavaScript component release policies without inventing registry credentials or silently treating skipped publication as success.

AI assistance: GPT-6 Astra via OpenCode investigated and scoped the change. Operator authorized GPT-5.6 Luna via direct OpenCode implementation and verification.