Error Handling taste

# Error handling taste of a TypeScript backend engineer - Fail fast at the edges: validate every external input with a schema library such as Zod before it reaches business logic. Confidence: 0.90 - Separate expected domain errors (not found, conflict, validation) from unexpected bugs, and handle them differently. Confidence: 0.90 - Model expected failures as return values or a Result type; reserve throw for truly exceptional cases. Confidence: 0.70 - Define a small set of typed error classes wi...