Designs stable APIs, module boundaries, and type contracts between frontend and backend.

Tests and debugs browser apps via Chrome DevTools, inspecting DOM, console, network, and performance.

Sets up CI/CD pipelines with quality gates, CI test runners, and deployment strategies.

Reviews diffs and pull requests across multiple quality dimensions before merging changes.

Refactor working code for clarity and maintainability without changing its behavior.

Writes a quality bar into CONSTRAINTS.md and flags agent changes that quietly weaken it.

Configures agent context and rules files to keep output quality high across sessions.

Finds root causes of failing tests, broken builds, and unexpected errors systematically.

Removes old systems and migrates users or database schemas without downtime, safely.

Records architecture decisions and API changes as ADRs for future engineers and agents.

Cross-examines decisions with fresh-context adversarial review to surface hidden failure modes.

Builds accessible, responsive, production-quality user interfaces with proper state management.

Structures commits, branches, and PRs, splitting messy working trees into atomic commits.

Turns vague ideas into sharp concepts through divergent and convergent thinking exercises.

Delivers multi-file changes in thin, verifiable slices, optionally behind feature flags.

Interviews the user one question at a time to uncover what they actually want.

Adds logging, metrics, tracing, and alerts so production behavior is diagnosable.

Profiles and fixes bottlenecks across frontend, backend, queries, and Core Web Vitals.

Breaks specs into ordered, implementable tasks with scope estimates and parallel work.

Audits input handling, auth, and data storage against OWASP Top Ten vulnerabilities.

Runs pre-launch checklists, monitoring setup, staged rollouts, and rollback strategies.

Verifies implementation choices against official documentation to produce authoritative, source-cited code avoiding outdated patterns.

Drafts specs, PRDs, and requirements with objectives and scope before any coding begins.

Drives code changes through red-green-refactor tests to prove behavior and catch regressions early.

Discovers and selects the right agent skill for a session or task at hand.