Remove AI-generated slop from code

Remove AI-generated code slop from diff against main branch

Pre-merge cleanup of AI-generated code that introduced verbose comments, unnecessary error handling, or type-unsafe patterns inconsistent with codebase norms.

• · Diff of current branch vs main
• · Codebase with existing style guide

• · Cleaned code: removed comments, defensive checks, type casts
• · Adherence to project style guide (no enums, no any casts)
• · 1-3 sentence summary of changes

• · git diff main (detect branch changes)
• · TypeScript type checker (after cast removal)

• · Git repo with main branch
• · Current branch has commits vs main
• · TypeScript project (or language-specific linter)

• · Type checker fails after cast removal → indicates unsafe removal
• · Comments mistakenly removed → user feedback needed
• · Casts necessary for legitimate types → keeps them with explanation

• · Explicit distinction: keep JSDoc, remove AI boilerplate
• · Enforces project style (destructuring, import/export patterns)
• · Type-checks after changes (post-removal validation)
• · No removal without reason (cast removals require comment)