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/.
Two foundational modules consumed by all three validators:
- lib/slug-map.ts: single source of truth for the showcase slug
taxonomy. ENTRIES array is the sole declaration; BORN_IN_SHOWCASE,
SLUG_MAP, SLUG_TO_EXAMPLES, and FALLBACK_MAP are derived at module
load and frozen via freezeSet/freezeMap/freezeMap2D helpers
(defineProperty-based to block Set.add / Map.set at runtime).
SlugEntry is a tagged union: born-in-showcase variants have empty
examples and no fallback; non-born variants carry a non-empty
tuple. Each slug passes isShowcaseSlug at module load.
- lib/manifest.ts: parseManifest returns a tagged ParsedManifest
union (ok | missing | malformed | unreadable) with never-throws
content contract. Uses statSync + errno inspection rather than
existsSync to distinguish ENOENT from EACCES/ENOTDIR. DemoId is a
branded string minted only through createDemoId. Empty-string
dirSlug is rejected as a caller bug; undefined opts out of the
slug-match check. Deep-freezes the returned Manifest.