Captures the current session into a continuation prompt for a fresh one, or resumes from a pasted handoff. Use when context is running low, when ending a session mid-task, or when told to 'hand off' or write a handoff. `/handoff reusable` instead maintains a persistent multi-session task-runner state file (`docs/handoff-state.md`) that a fresh session reads, advances a few tasks via agent pairs, and re-saves.
Authors and normalizes tasks into `docs/todo.md`. Use when writing a todo list, capturing audit findings, or turning loose notes into pickup-cold-ready tasks.
Reconciles `README`, `docs/*`, `CLAUDE.md`, and agent/skill/plugin prompt files with what the code actually does: fixes stale, missing, or overpromising claims and verifies every quoted command/flag/path. Use after a change alters documented behavior, when a tool's output shape or fields change, or to sweep all docs.
Tunes a Rust `Cargo.toml` or `.cargo/config.toml`: profiles, features, workspaces, dependency hygiene. Use when cutting compile time or binary size, trimming deps, or configuring a workspace.
Boots and drives Android AVDs and iOS simulators from the CLI (adb, `xcrun simctl`, Flutter `integration_test`, Alchemist goldens). Use when running headless app tests, verifying screenshots, or debugging emulator boot/GPU issues.
Suggests project/crate/plugin names and checks availability across registries (crates.io, npm, PyPI, AUR, GitHub, domains; needs `bun`). Use before naming, renaming, or publishing anything.
Diffs a program against a reference or spec and writes the gaps as tasks. Use when matching, catching up to, reaching parity with, or surpassing another tool. Writes the gap list into `docs/todo.md`.
Audits a skill (or all skills) for routing gaps: it holds the right answer but buries it where an agent won't reach it. Targets boundary/negative probes (can it do X, what can't it do, is Y possible) that route to the how-to and miss the answer. Use after authoring or editing a skill, or to sweep all skills.