forked from 1b-agent/opencadstudio-upstream
Plugins could dispatch commands but not register interactive (click-to- place) tools — the gap mf4633 flagged on #100 for Storm Sewer's SS_INLET / SS_PIPE. Add an InteractiveCommand trait + CommandStep to ocs_plugin_api and HostApi::start_interactive; a host adapter bridges it to the internal CadCommand, so a plugin tool drives the host's point-collection flow. Hybrid by construction: the same command works by clicking in the viewport AND by feeding coordinates over --serve (run "CMD x,y x,y"). Adding a HostApi method changes the contract vtable, so API_VERSION bumps to 2 — v1 plugin binaries are now refused at load. Part of the #100 extensibility epic. Co-Authored-By: Claude Opus 4.8 <[email protected]>