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+# property-match — Development Guidelines
+
+## Stack
+
+- **Vite 8** + **React 19** + **TypeScript 6**
+- **MUI v9** (`@mui/material`) — primary component library
+- **Tailwind CSS v4** — utility classes via `@tailwindcss/vite` (no `tailwind.config.js`)
+- **React Router v7** — import from `react-router`, not `react-router-dom`
+
+## Components
+
+Always reach for an existing MUI component before writing a custom one. Check the [MUI component list](https://mui.com/material-ui/all-components/) first. Only build a custom component when MUI has no equivalent or the required behavior diverges significantly from what MUI provides.
+
+## Styling
+
+Use Tailwind utility classes for all layout and styling. Do not write plain CSS rules or add styles to `.css` files. The only CSS file is `src/index.css`, which holds the Tailwind layer imports — do not add project styles there.
+
+
+## Providers
+
+All data access and data actions live in `src/provider/`.
+
+### Naming
+
+| Rule | Example |
+|------|---------|
+| Every provider file/class is suffixed `Provider` | `PropertyProvider`, `UserProvider` |
+| Every provider backed by mock data is also prefixed `Mockup` | `MockupPropertyProvider`, `MockupUserProvider` |
+
+### Interface pattern
+
+Define a TypeScript interface for each provider so the mockup and the real implementation are interchangeable:
+Every Interface should be prefixed with a capitalized I.
+
+```ts
+// src/provider/IPropertyProvider.ts
+export interface PropertyProvider {
+  getAll(): Promise<Property[]>
+  getById(id: string): Promise<Property | null>
+  create(data: CreatePropertyInput): Promise<Property>
+  update(id: string, data: UpdatePropertyInput): Promise<Property>
+  remove(id: string): Promise<void>
+}
+```
+
+### Async methods
+
+Every method in a provider must be `async` and return a `Promise`, even in the mockup. This ensures the real provider can be swapped in without changing any call sites.
+
+```ts
+// src/provider/MockupPropertyProvider.ts
+import type { PropertyProvider } from './PropertyProvider'
+
+const properties: Property[] = [ /* seed data */ ]
+
+export const MockupPropertyProvider: PropertyProvider = {
+  async getAll() {
+    return [...properties]
+  },
+  async getById(id) {
+    return properties.find(p => p.id === id) ?? null
+  },
+  async create(data) {
+    const next: Property = { id: crypto.randomUUID(), ...data }
+    properties.push(next)
+    return next
+  },
+  async update(id, data) {
+    const idx = properties.findIndex(p => p.id === id)
+    properties[idx] = { ...properties[idx], ...data }
+    return properties[idx]
+  },
+  async remove(id) {
+    const idx = properties.findIndex(p => p.id === id)
+    properties.splice(idx, 1)
+  },
+}
+```
+
+Swap to a real implementation by replacing `MockupPropertyProvider` with a provider that calls an API — no other code changes required.