UX States Audit

Every piece of UI that fetches data or triggers async work has three states beyond the happy path: loading, empty, and error. LLMs implement the happy path and leave the rest blank. This skill finds and fills those gaps.

This is distinct from error-audit: error-audit finds errors that are suppressed. This finds states that were never implemented.

Step 0: Understand existing patterns

Before touching anything, read the codebase to understand how it currently handles these states:

• What components or primitives exist for loading (skeletons, spinners, shimmer)?
• What does an empty state look like — is there a shared component, or inline?
• How are errors shown to users — toast, inline message, error boundary?

Use these patterns exclusively. Don't introduce a new loading spinner if one already exists.

What to look for

Missing loading state:

• Data fetch starts, nothing changes in the UI until data arrives
• Button triggered action with no pending/disabled state
• Form submission with no in-progress indicator
• Navigation or route transition with no feedback

Missing empty state:

• List or table that renders nothing (blank space) when data is an empty array
• Search results that show nothing without explanation
• Dashboard widgets that disappear when there's no data instead of explaining why

Missing error state:

• Fetch fails → component renders identical to loading or blank
• Form submission fails → nothing visible changes
• Mutation errors that are caught in the data layer but never reach the UI

Process

1. Identify the scope from the user's request
2. Find every component that fetches data or triggers async work
3. For each: check whether loading, empty, and error states are handled
4. Implement missing states using the patterns found in Step 0
5. Report what was added, by component

Fix principles

• Loading states should be immediate — shown before the first byte arrives
• Empty states should explain the situation and, where appropriate, offer an action ("No results — try a different search")
• Error states should say what went wrong and what the user can do (retry, go back, contact support)
• Don't invent new UI primitives — use what already exists in the codebase

Reference files

• references/ux-patterns.md — Framework-specific patterns for missing loading, empty, and error states. Detection patterns, bad/fix examples. Read before starting the audit.

Report

Summarize by component: which states were missing, what was added.