docs(readme): add reproducibility-focused experiment guide and scope statement

chore(pyproject): refresh project metadata fields

refactor(cleanup): remove unused legacy plugin modules

feat(agent): refine qllm guidance and policy error recovery

fix(workspace): track trash emails and expand seed fixtures

fix(travel): add city hub seed and harden calendar input handling

fix(slack): normalize web request side-effect logging

fix(banking): validate transfer inputs and safe defaults

feat(judge): tighten per-case utility and breach checks

feat(runner): streamline case suite execution and tracing flow

feat(summary): include attack breakdown and dual_no_policy

feat(experiment): support dual_no_policy run channel

feat(make): add help, retry-merge, and table commands

data(retry): add generated retry case manifests

feat(retry): add one-shot retry-and-merge shell flow