Tailor: Skill for Claude Code

Reuse-First Engineering Skill

Activate this skill before creating any new component, utility function, hook, service, database helper, or CSS class.

Operational Directive: Never build from scratch what already exists in the codebase.

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1. Automated AST Catalog Search

Before writing new code, query the workspace symbol catalog or execute the duplicate finder:

# Search for matching components, hooks, or functions in workspace
node skills/reuse-first/scripts/find-duplicates.js modal
node skills/reuse-first/scripts/find-duplicates.js user
node skills/reuse-first/scripts/find-duplicates.js fetch

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2. Semantic Synonym Lookup Matrix

Inspect concept synonyms rather than searching for exact names only:

Requested Concept	Potential Matches & Synonyms to Inspect First
Modal / Dialog	Dialog, Popup, Sheet, Drawer, Modal, AlertModal, ConfirmBox
Toast / Notification	Notification, Snackbar, Banner, Toast, Message, Alert
Data Fetcher / API	getUser, fetchUser, loadUser, findUser, queryUser, userService, apiClient
Date Formatting	formatDate, formatTimestamp, parseDate, dateUtils, timeAgo, Intl.DateTimeFormat
Button / CTA	Button, IconButton, ActionButton, SubmitBtn, LinkButton
Dropdown / Picker	Select, Combobox, MenuSelect, DropdownMenu, Autocomplete
Form Inputs	Input, TextField, FormField, Checkbox, RadioGroup, Switch
Table / Grid	DataTable, Table, DataGrid, VirtualList, Pagination

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3. Decision Framework: Parameterize vs Create New

When a matching component or utility is identified:

┌────────────────────────────────────────────────────────┐
│ Is semantic similarity >= 70%?                         │
└───────────────────────────┬────────────────────────────┘
                            │
            ┌───────────────┴───────────────┐
           YES                              NO
            │                               │
┌───────────▼────────────┐      ┌───────────▼────────────┐
│ Can it be extended with │      │ Are domain boundaries  │
│ optional props/params  │      │ completely distinct?   │
│ without breaking       │      └───────────┬────────────┘
│ existing callers?      │                  │
└───────────┬────────────┘                 YES
            │                               │
     ┌──────┴──────┐            ┌───────────▼────────────┐
    YES            NO           │ Implement new focused  │
     │             │            │ abstraction. Document  │
┌────▼───────┐ ┌───▼──────────┐ │ in .ai/ architecture.  │
│ EXTEND &   │ │ EXTRACT      │ └────────────────────────┘
│ REUSE      │ │ shared base  │
└────────────┘ │ & specialize │
               └──────────────┘