Handoff to Claude Code

Create a comprehensive handoff package so a developer using Claude Code can implement this design in a real codebase.

Steps

1. Create a handoff folder in the project directory:

   mkdir -p <project-folder>/design_handoff_<feature-name>/
   

   Use a descriptive feature name derived from the design (e.g., design_handoff_onboarding_flow, design_handoff_settings_redesign).

2. Create a README.md in the handoff folder with the following sections:

README.md Structure

# Handoff: <Feature Name>

## Overview
Brief description of what this design is for and what it accomplishes.

## About the Design Files
State clearly that the files in this bundle are **design references created in HTML** — prototypes showing intended look and behavior, not production code to copy directly. Explain that the task is to **recreate these HTML designs in the target codebase's existing environment** (React, Vue, SwiftUI, native, etc.) using its established patterns and libraries — or, if no environment exists yet, to choose the most appropriate framework for the project and implement the designs there.

## Fidelity
State clearly whether the mocks/prototypes created in this conversation are:
- **High-fidelity (hifi)**: Pixel-perfect mockups with final colors, typography, spacing, and interactions. The developer should recreate the UI pixel-perfectly using the codebase's existing libraries and patterns.
- **Low-fidelity (lofi)**: Wireframes or rough layouts showing structure and flow. The developer should use these as a guide for layout and functionality but apply the codebase's existing design system for styling.

## Screens / Views
For each screen or view in the design:
- **Name**: What this screen is called
- **Purpose**: What the user does here
- **Layout**: Detailed description of the layout (grid structure, flex directions, widths, heights, margins, padding)
- **Components**: List each UI component with:
  - Position and size
  - Colors (exact hex values if hifi)
  - Typography (font family, size, weight, line-height, letter-spacing)
  - Border radius, shadows, borders
  - Hover/active/focus states
  - Content/copy (exact text used)

## Interactions & Behavior
- Click handlers and navigation flows
- Animations and transitions (duration, easing, properties)
- Hover states
- Loading states
- Error states
- Form validation rules
- Responsive behavior (if applicable)

## State Management
- What state variables are needed
- State transitions and their triggers
- Any data fetching requirements

## Design Tokens
List all design values used:
- Colors (with hex values)
- Spacing scale
- Typography scale
- Border radius values
- Shadow values

## Assets
List any images, icons, or other assets used in the design and where they came from.

## Files
List the HTML/CSS/JS files in the project that contain the design, so the developer can reference them.

3. Copy relevant design files into the handoff folder (the HTML prototypes, any component files, etc.)

4. Use the present_fs_item_for_download tool with the handoff folder path so the user can download it as a zip.

Important Notes

• Be extremely precise about measurements, colors, and typography — the developer will rely on this documentation
• Make sure the README states up front that the bundled HTML files are design references, and that the user's described behavior should be understood as recreating those designs in the target app's existing environment (or the best choice of framework if none exists yet) — not shipping the HTML directly
• If the design uses Anthropic brand assets, mention that they should use the existing brand system in their codebase
• After creating, ask user if they want screenshots of the designs to be included. Don't include them by default.
• The README should be self-sufficient — a developer who wasn't in this conversation should be able to implement the design from the README alone