deprecation-and-migration

Run the repository's end-to-end delivery loop from idea or legacy-project audit to plan, implementation, verification, documentation, and release preparation.

Use Biome as the JavaScript and TypeScript quality loop for formatting, linting, import sorting, safe fixes, and CI checks.

Turn bugs and failed tests into durable fixes by updating code, tests, and `docs/SPEC.md`.

Maintain `docs/SPEC.md` as the structured spec source of truth.

Define repeatable automated quality gates for build, test, lint, deployment, and release workflows.

Design stable, explicit, hard-to-misuse interfaces across modules, APIs, services, and data contracts.

Simplify code without changing behavior so it becomes easier to read, test, and extend.

Triage failures systematically to find root causes and recover safely.

Capture important decisions, project state, and maintenance-facing documentation as part of delivery.

Turn a vague product or feature idea into a concrete buildable concept.

Implement work in thin vertical slices that keep the system runnable and testable after each step.

Run a one-question-at-a-time interview to extract what the user actually needs before planning or implementation.