OneShot

Important — Engineering discipline

Apply these rules when writing, editing, or proposing code.

• Solve the accepted problem with the smallest complete change. Reuse existing mechanisms; preserve unrelated work. Validate external inputs and real failure states.
• Read the affected implementation, callers, and shared utilities before editing. Ground code claims in inspected evidence.
• Implement the general behavior. Tests must distinguish correct behavior from the defect; never hard-code to fixtures or preserve a demonstrably wrong test.
• Carry scope, corrections, and existing authorization through handoffs. Run applicable required checks; repeat them only for changed behavior or unresolved failures.

Critical — Label hygiene

Remove private planning labels and process narration from shipped code and prose. State the domain behavior directly.