Compose tooling through published Fast Forward Container and service providers #14

Use the published PHP package fast-forward/container and the actual container-interop/service-provider contract for this tool's composition boundary, as requested by the owner. Confirm real release/API and PHP compatibility; no Node Fastify dependency and no parallel container/provider framework.

Depends on initial #7/#12 composition. Keep application services constructor-injected and independent of a service locator. Define supported module entries, deterministic overrides and lazy composition; test actual CLI construction, command registration, collaborator replacement and failure propagation using the published package.

Do not depend on unpublished Container PR #49 or modify that repository. If published cross-provider behavior cannot meet the required contract, record the exact gap instead of emulating pending behavior. Keep runtime versus require-dev/CPX boundaries explicit; no circular DevTools dependency, scripts/plugins or consumer migration.

Every resulting PR requires real current-head checks and Codex AND CodeRabbit review without pending findings before merge. No release above0.x and no manual publication.