Added an optional Shiny GUI, launched with run_focus_studio(), with three tabs. Run a focus group starts a fresh moderated session live and offers it as a downloadable .rds. Analyze loads a transcript and reads its participation and word statistics offline. The continuation experiment takes a saved focus group up to a turn, perturbs an earlier turn’s text, and generates the next turn under the original and perturbed histories, so the downstream turn can be compared as a dependent variable. The experiment is built on the existing public API (generate_utterance() on a supplied history string, with the target agent cloned per branch); no existing behavior changes. The GUI’s dependencies (shiny, bslib, DT, and the shared LLMR.shiny substrate) are Suggests, and the launcher guards on all four, so non-GUI users are unaffected.
