gpd-error-patterns

What problem does it solve? Physics and simulation projects accumulate recurring failure modes (sign errors, missing factors, convention mismatches) that are easy to reintroduce. This Skill surfaces the recorded error patterns from .gpd/ERROR-PATTERNS.md so verifiers, planners, and executors can proactively check for recurrence before repeating past mistakes. ## Core Features & Use Cases - Pattern viewing: Reads and displays the full error patterns table with date, phase, category, severity, root cause, and prevention columns. - Category filtering: Filters patterns by one of eight categories (sign, factor, convention, numerical, approximation, boundary, gauge, combinatorial), rejecting unknown categories with a usage message. - Cross-project library: Queries the global GPD pattern library via the runtime CLI, optionally scoped to the project domain, and appends relevant cross-project patterns sorted by severity. - Use Case: Before running a verification pass on a turbulence simulation module, a developer reviews all recorded numerical and convention error patterns to confirm the current code does not repeat previously confirmed root causes. ## Quick Start Ask the assistant to show all recorded physics error patterns, or to show only the patterns in a specific category such as sign or numerical.