system-design
System Design
Overview
Select the simplest architecture that satisfies requirements. Introduce complexity only when evidence demands it.
Core principle: Every structural decision must be driven by a current requirement, not a speculative future one.
No exceptions. No workarounds. No shortcuts.
The Prime Directive
NO STRUCTURAL COMPLEXITY WITHOUT AN ESTABLISHED REQUIREMENT
If you cannot point to a concrete, current requirement that demands the complexity, choose the simpler option.
When to Use
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fault-diagnosis
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
15task-planning
Use when you have a spec or requirements for a multi-step task, before touching code
15agent-messaging
Use when dispatching subagents, composing prompts for teammates, structuring handoff reports, or managing context boundaries between agents. Covers both subagent prompts and team-level messaging.
15intent-discovery
Use when starting any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements, and design before implementation.
15quality-enforcement
Use when preparing code for commit, PR, or merge - covers linting, type safety, bundle budgets, coverage thresholds, complexity limits, dependency audit, and dead code detection
14pattern-matching
Use when contributing code to an existing project - guarantees that every new line mirrors the established conventions, naming schemes, architectural layering, directory layout, and stylistic choices already present in the codebase rather than drifting toward generic AI defaults
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