Legacy removal report

The conversion removed the former research CLI's public names and behavior.

Area	Result
Provider-bound ingest	Replaced by injected, provider-neutral read ports
Direct social publishing	Removed; Creator emits proposals only
Ambient credentials	Removed from creator-domain code and public models
Monolithic workflow orchestration	Removed; controlling runtimes compose capabilities
Fixed content factory taxonomy	Replaced by qualified caller-supplied content kinds
Producer-specific brief and render schemas	Replaced by generic briefs and artifact bundles
Fixed cadence	Replaced by an explicit planning window and quantity requirements
Mutable outbox state	Replaced by revisioned, digest-bound proposals
Compatibility aliases	Not retained because no stable distribution existed

Architecture tests prevent provider SDK and runtime-product imports in capabilities, contracts, and services. Documentation tests keep neutral examples and public boundaries aligned with the package.