devstack

Enforce root-cause fixes over workarounds, hacks, and symptom patches in all software engineering tasks. Use when debugging issues, fixing bugs, resolving test failures, planning solutions, making architectural decisions, or reviewing code changes. Activates gate functions that detect and reject common workaround patterns such as type assertions, lint suppressions, error swallowing, timing hacks, and monkey patches. Don't use for trivial formatting changes or documentation-only edits.

Receive and verify Stripe webhooks. Use when setting up Stripe webhook handlers, debugging signature verification, or handling payment events like payment_intent.succeeded, customer.subscription.created, or invoice.paid.

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a button", "take a screenshot", "scrape data from a page", "test this web app", "login to a site", "automate browser actions", or any task requiring programmatic web interaction.

Alpine.js development guidelines for lightweight reactive interactions with Tailwind CSS and various backend frameworks.

es-toolkit utility library guide for modern JavaScript/TypeScript. Use when: (1) Writing utility functions (array manipulation, object transforms, string conversion, math operations, type checks), (2) Migrating from lodash, (3) Needing debounce/throttle/retry, (4) Working with async primitives (Mutex, Semaphore, delay), (5) Any code that could use es-toolkit instead of custom implementation. Triggers on: es-toolkit, lodash, utility function, debounce, throttle, groupBy, pick, omit, merge, cloneDeep, snakeCase, camelCase, isNil, isEqual, retry, Mutex, Semaphore, attempt. Do NOT use for: general JavaScript questions unrelated to utilities, or React/framework-specific code.

Implement Stripe payment processing for robust, PCI-compliant payment flows including checkout, subscriptions, and webhooks. Use when integrating Stripe payments, building subscription systems, or implementing secure checkout flows.

Complete subscription billing system with Stripe integration, feature flags for plan gating, webhook handling, and billing portal.