Use when starting dev servers, watchers, tilt, or any process expected to outlive the conversation. Provides zmx session management patterns for long-lived processes.

Use when checking deployment health, investigating errors, reading logs, or working with Tiltfiles. Queries Tilt resource status, logs, and manages dev environments.

Use when running e2e tests, debugging test failures, or fixing flaky tests. Covers failure taxonomy, fix rules, and workflow. Never changes source code logic or API without spec backing.