v0.21.0

de74c5f: Add on-demand lookup rendering to releases search. When the API returns a lookup payload (coordinate-shaped queries like org/repo that miss every curated entity), a new Lookup section prints before the regular results — covering all five outcomes (indexed, existing, empty, not_found, deferred) plus an inline release preview (up to 5) and a "Did you mean" rail when the org segment matches a curated org. The payload is also included in --json output. Bumps the @buildinternet/releases-api-types pin to ^0.3.0.