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Reusable instructions for compatible AI agents.
Field counts come from the latest full-catalog snapshot. A resource can belong to several fields and platforms.
Use when designing or auditing icon systems, colors/badges/shapes, visual metaphors, interface signs, or naming-plus-visual surfaces that users misread. Covers semiotic reasoning across icon/index/symbol, signifier/signified, denotation/connotation/myth, color/shape/position/iconography, affordan...
Use when designing how a database keeps multiple copies of its data in agreement across nodes for availability, read scaling, and disaster recovery: the three foundational topologies (single-leader / primary-replica, multi-leader / multi-primary, leaderless / quorum), synchronous vs asynchronous ...
Use BEFORE any tool call that could modify state, touch sensitive targets, rewrite history, install dependencies, publish packages, or expose credentials/environment data. Classifies intent into Passive/Read, Reconnaissance, Modification, or Destructive/Irreversible using operation type plus targ...
Use when designing or auditing dependency structure: package boundaries, runtime vs build dependencies, adapter layers, duplicate-purpose libraries, supply-chain risk, upgrade policy, lock-in, and dependency graph health. Do NOT use for choosing a major framework (use `framework-fit-analysis`), v...
Use when designing or reviewing Next.js middleware (`middleware.ts`): cross-cutting request/response transforms before route resolution, Edge Runtime constraints, `matcher` config, `NextRequest`/`NextResponse` API, the four response shapes (next/rewrite/redirect/direct), canonical patterns (auth ...
Use when locating a bug in an unfamiliar codebase, tracing a failure from symptom to source, or choosing between candidate fixes after the symptom is observed but before a patch lands. Covers the locate-to-solve workflow: problem-statement contract, search-space reduction, boundary-based fault lo...
Use when authoring or reviewing the frontmatter of a markdown post — checking required fields (title, date, slug, tags), validating against the content schema in `lib/content/schema.ts`, catching ambiguous date formats or tags not in the controlled vocabulary, and ensuring the slug matches the fi...
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