understanding-assumption-surface

Surface implicit assumptions to verify them against observable code artifacts before building on unverified claims. Use when: (1) claims about code behavior are made without checking what the implementation actually does, (2) planned changes depend on properties not yet verified against tests, types, or runtime behavior, (3) reasoning is based on how software typically works rather than how this specific codebase demonstrably works, (4) assertions about system properties reference expected patterns rather than observed artifacts.

// tip: Run this command in your terminal to install the skill