feat: reward verifier alignment, notebook hardening, model name fix

chore: refresh fixture summary artifact

feat: refresh heuristic baseline and sync docs

feat: add high-fidelity validation evidence

docs: add replay playtest report with reward branch coverage

feat: add replay playtest and tighten fail-fast validation

docs: add measured sweep report and artifacts

feat: add initial p1 validation artifacts

refactor: align p1 runtime contract and baseline reporting

feat: implement repaired p1 parameterization

docs: refine p1 parameterization plan

docs: correct baseline fixture status

fix: align baselines with current episode contract

docs: sync status trackers to verifier state

feat: align p1 environment with repo plan

feat: add local environment scaffold and baselines

chore: add hackathon repo guardrails

chore: scaffold fusion design lab repo