Stage 1 of the audiobookshelf-compatible REST + Socket.io port from
silo-plugin-audiobooks. Lands the package layout, Handler struct with
interface stubs for silo-side dependencies (MediaStore, TokenStore,
ProfileCredentialValidator, ConfigProvider, EventPublisher, Recommender),
and an empty Mount() method. Real route handlers arrive in subsequent stages
(auth, file serving, progress, browse).
Plugin imports of store/backend/streaming/mediatoken/bookref/runtimehost are
replaced with minimal interfaces; real silo implementations come when those
interfaces are needed by specific route handlers.
Also ports filter.go (ABS filter query parsing/matching), access_log.go
(request logging via log/slog), minified.go (minified=1 response shaping),
login_ratelimit.go (per-IP token bucket), jwt.go (JWT mint/parse), and
types.go (shared ABS wire-format types and constants) — all clean of
plugin-specific imports.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>