Style Audit

Review code quality consistency, coding patterns, and style drift.

Scope

1. Naming and shape consistency

• naming consistency across types, constants, functions, and files
• factory naming (create* for factories; avoid build* / make* unless established locally)
• export shape: prefer direct export const over local alias + export { ... }
• import clarity: avoid aliasing unless it resolves a collision
• module layout consistency

2. Control flow and state modeling

• switch exhaustiveness (default + unreachable when applicable)
• assert patterns (invariant for impossible states vs user-facing errors)
• prefer explicit status/state fields over boolean flags for lifecycle phases