feat(tools): add provider-level external tool filtering

docs(install): add install.sh and update README for installed usage

docs: update README, agent guide, and changelog for config tooling features

feat(config): add schema generation, semantic diff, typo suggestions, and comment preservation

feat(orchestration): add per-agent provider selection for multi-model runs

docs: update README, agent guide, and changelog for chat command and recent UX changes

feat(cli): add multi-turn history, token tracking, and zero-config env defaults

feat(cli): add chat command, terminal color, grouped help, and typo suggestions

refactor(providers): adopt stream raw-write API and enable openai_compat by default

feat(gateway): add queue request listing and run summary endpoints

docs: update Zig version references from 0.14 to nightly

feat(cli): add ops dashboard, grouped help, shell completions, and onboarding flow

feat(cli): add doctor command, --json output, and actionable error hints

docs: update documentation for attestation, replay, vault, and delegation features

fix(vault): fix double-free in decrypt and add round-trip tests