Design skills

Use when a multi-slide carousel is needed for Instagram, Facebook, or LinkedIn — a narrative arc with the hook on slide one, value through the middle, CTA on the last, headline, body, visual direction, and background per slide, plus an HTML preview to approve the concept before production. Trigger on 'carousel brief', 'make a carousel', 'turn this into slides', 'LinkedIn carousel', 'slide by slide breakdown', 'preview the carousel first'. Not for — a single static image, see `42-image-brief-global`; the caption posted with it, see `37-social-caption-global`; production steps inside Canva or Figma, see `45-design-tool-brief-global`; scoring the finished slides, see `47-design-review-global`.

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Use when the WHAT being sold needs work, not the price and not the copy — core promise, value stack, bonuses, guarantee and risk reversal, honest scarcity and urgency, tier packaging, upsell and downsell paths, and high-ticket or productized service structures. Trigger on 'design an offer', 'irresistible offer', 'value stack', 'add a guarantee', 'my offer is not converting', 'people say it is too expensive'. Also use when traffic and copy are fine and nobody is buying anyway. Not for — the number on the price tag, see `17-pricing-strategy-global`; the ad text selling it, see `05-ad-copy-global`; the page it sits on, see `12-landing-page-brief-global`; the launch sequence, see `59-go-to-market-global`.

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Use when a campaign needs its full design asset list before anyone opens a tool — asset type, dimensions, channel, quantity, priority, owner, deadline, and status, with deadlines counted backward from launch day on a T-14 to D+1 timeline plus a naming convention. Trigger on 'campaign asset list', 'what does the designer need', 'list the design files', 'creative asset plan', 'how many banners do we need', 'the designer keeps asking what to make'. Not for — the spec for one individual image, see `42-image-brief-global`; a slide sequence, see `43-carousel-brief-global`; an urgent mid-campaign swap, see `48-quick-visual-brief-global`; resizing an existing master, see `50-asset-resize-global`.

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Design taste evaluation framework — DVF primary filter, Apple/Google/Jobs design principles as explicit scoring criteria, weighted decision matrix, and option ranking for the DIVERGE wave

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4-step system design framework with back-of-envelope estimation, scaling ladder, and common pitfalls

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Web UI design patterns for product owners. Load when designing web application interfaces, writing web-specific acceptance criteria, or evaluating responsive designs.

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Teaches agents how to run a timeboxed spike - throwaway code that validates one assumption before DESIGN

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Desktop application UI patterns for product owners. Load when designing native or cross-platform desktop applications, writing desktop-specific acceptance criteria, or evaluating panel layouts and keyboard workflows.

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Core UX principles for product owners. Load when evaluating interface designs, writing acceptance criteria with UX requirements, or reviewing wireframes and mockups.

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Advanced architecture stress analysis methodology for designing systems that survive unknown stresses. Load when --residuality flag is used or when designing high-uncertainty, mission-critical systems.

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Roadmap concision rules, step decomposition efficiency, AC abstraction guidelines, and step-to-scenario mapping. Load when creating implementation roadmaps.

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Terminal UI and CLI design patterns for product owners. Load when designing command-line tools, interactive terminal applications, or writing CLI-specific acceptance criteria.

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Emotional design and delight patterns for product owners. Load when designing onboarding flows, empty states, first-run experiences, or evaluating the emotional quality of an interface.

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TLA+ formal verification for design correctness and PBT pipeline integration

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YAML output format and approval criteria for platform design reviews. Load when generating review feedback.

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25 real-world system design case studies condensed from Alex Xu's System Design Interview Vol 1 and 2 - requirements, architecture, deep dive insights, key takeaways

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Creates new specialized agents using the 5-phase workflow (ANALYZE > DESIGN > CREATE > VALIDATE > REFINE). Use when building a new AI agent or validating an existing agent specification.

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Evidence collection methods, problem categorization, analysis techniques, and solution design patterns

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Naming conventions, API ergonomics, and usability patterns for functional code

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Algebra-driven API design with monoids, semigroups, and interpreters via algebraic equations

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Strategic and tactical DDD patterns, bounded context discovery, context mapping, aggregate design rules, and decision frameworks for when to apply DDD

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Question-first approach to understanding user journeys. Load when starting a new journey design or when the discovery phase needs deepening.

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Apple LeanUX++ design workflow, journey schema, emotional arc patterns, and CLI UX patterns. Load when transitioning from discovery to visualization or when designing journey artifacts.

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Designs system architecture with C4 diagrams and technology selection. Routes to the right architect based on design scope (system, domain, application, or full stack). Two interaction modes: guide (collaborative Q&A) or propose (architect presents options with trade-offs).

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