Pre-built output is now committed to the repository so that
Quartz can skip the build step during plugin installation.
The prepare script is removed to prevent redundant builds
when installing from npm/git.
tsup and typescript are only needed at build time — move to devDependencies
so they can be pruned after build. Dependencies already available from the
host Quartz installation are moved to peerDependencies to avoid duplication.
Strip template scaffolding (components, emitter, transformer, i18n, tests)
and implement a filter-only plugin that excludes content with draft: true
from published output.
