Delete the pre-generated starters/ directory tree (previously
synced from packages/ by generate-starters.ts). Add
extract-starter.ts which produces a starter tarball on demand
from any integration. Move shared starter template files to
showcase/shared/starter-template/.
Every generator embedded `generated_at: new Date().toISOString()` in its
output, causing constant git noise on every build/dev run even when
actual content was unchanged. Remove the field from all 4 generator
scripts, all consumer interfaces (Registry, BundledContent,
BundledStarters, DocsStatusBundle), inline type casts, and test
assertions.
Also: add shell-dashboard as a generate-registry output directory (it
was cross-importing from shell); move probe-docs output to
shell-dashboard/src/data/ (sole consumer); update test beforeAll to
generate files instead of restoring from git HEAD (prep for gitignore).
Jordan Ritter