老主题迁移
Move legacy presentation into typed Theme contracts without business authority.
# Theme Migration Overview
Inventory overwrites, hooks, assets, settings and direct data lookups. Classify each as a named presentation target, SLOT, configuration, typed data need or host adapter responsibility.
# Presentation Data
Move data queries to the business owner or host adapter. Return only normalized presentation facts through a versioned view model.
# Override / Slot
Map a whole-template replacement to OVERRIDE and a bounded append point to SLOT. Do not copy files into the host tree.
# Zaesky Light Case Study
Zaesky Light demonstrates a theme-presentation package, declared resources, package configuration, host selection, fallback and typed render context. It does not gain general business-data authority.