forked from 1b-agent/opencadstudio-upstream
Collapse the triplicated send/timeout/deadline/nested-request loop in interactive_event, get_prompt and needs_entity_pick into PluginProcess::call_simple. Timeout floors, error strings and UnexpectedResponse behavior preserved exactly. Net: +64 / -72 in one file, no behavior change. Verified: cargo check clean, cargo test -p ocs_plugin_api --lib --features host (92 passed), clippy shows only pre-existing warnings.