feat(CopyButton): inline copy-to-clipboard button with success flash

[ebellamy-bh]

Ports waggleline's row-level copy affordance into the design system — the inline copy-to-clipboard button the library has been missing next to IDs, emails, phone numbers, and API keys.

What it does

• Writes value to the clipboard and flashes a success check (copiedLabel, configurable timeout), then reverts
• Stops propagation and prevents default, so it is safe inside clickable rows, links, and grid cells
• Silent when clipboard access is denied; onCopied callback for toasts/analytics
• Per-instance state — drop any number into a table

Screenshots

Detail fields with the email just copied (success check showing):

Light	Dark

Provenance

Port of waggleline/app/imports/ui/components/CopyButton.tsx; FontAwesome → lucide Copy/Check, hardcoded grays → semantic tokens, plus a success-token flash, configurable labels, and an onCopied hook.

Testing

• 4 unit tests (copy + flash + revert under fake timers, custom labels, propagation stop, denied clipboard)
• 2 stories (inline usage, detail-field rows)
• typecheck / lint / format / rtl:scan clean; combined batch suite 651/651

[Copilot]

Pull request overview

Adds a new inline CopyButton component to the design system for row-level “copy to clipboard” affordances (IDs/emails/keys), and wires it into the library’s public exports and build entries.

Changes:

• Introduces CopyButton (inline icon button) that writes a provided value to the clipboard and briefly flashes a success state.
• Adds unit tests and Storybook stories for the new component.
• Exports the component from the package entrypoints and registers it in tsup for bundling.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tsup.config.ts	Adds a new tsup entrypoint for components/CopyButton.
src/index.ts	Re-exports CopyButton from the library root.
src/components/CopyButton/index.ts	Adds the component barrel export.
src/components/CopyButton/CopyButton.tsx	Implements the new copy-to-clipboard icon button.
src/components/CopyButton/CopyButton.test.tsx	Adds unit tests for copy/flash/revert/propagation/denied clipboard.
src/components/CopyButton/CopyButton.stories.tsx	Adds Storybook stories for inline and detail-field usage.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated no new comments.

Suppressed comments (2)

Previously missed (2) — in code that hasn't changed since the last review.

src/components/CopyButton/CopyButton.tsx:91

• {...props} is spread after type, title, and aria-label, so callers can accidentally override these (e.g. type="submit" inside a form, or a fixed aria-label that never updates to "Copied"). Since this component intentionally forces type="button" and manages its own accessible label, spread props earlier so the component-controlled attributes always win.

          className
        )}
        {...props}
      >
        {copied ? (

src/components/CopyButton/CopyButton.tsx:34

• The docstring says “Stateless across instances”, but the component has internal state (copied) and a timer; what you likely mean is that state is isolated per instance. Wording this accurately avoids confusion for consumers.

 * An inline copy-to-clipboard icon button with a brief success check.
 * Stateless across instances — safe to drop into table rows, ID chips,
 * and detail fields.