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+# Agent Guidelines for this Repository
+
+> **Important**: This file is the source of truth for all agents working in this repository. If you modify the build process, add new tools, change the architecture, or introduce new conventions, **you must update this file** to reflect those changes.
+
+## 1. Project Overview & Commands
+
+This is an **Astro** project using **pnpm**.
+
+### Build & Run Commands
+- **Install Dependencies**: `pnpm install`
+- **Development Server**: `pnpm dev`
+- **Build for Production**: `pnpm build` (Output: `dist/`)
+- **Preview Production Build**: `pnpm preview`
+- **Check Types**: `npx tsc --noEmit` (since `strict` is enabled)
+
+### Testing & Linting
+- **Linting**: No explicit lint command found in `package.json`. Follow existing code style strictly.
+- **Testing**: No explicit test framework (Jest/Vitest) is currently configured.
+  - *If asked to add tests*: Verify if a test runner needs to be installed first.
+
+## 2. Directory Structure
+
+```text
+/
+├── public/             # Static assets
+├── src/
+│   ├── assets/         # Source assets (processed by Astro)
+│   ├── components/     # Astro components
+│   │   ├── base/       # UI Primitives
+│   │   └── page/       # Layout-specific components (Header, Footer)
+│   ├── content/        # Markdown/MDX content collections
+│   │   ├── posts/
+│   │   ├── experiences/
+│   │   └── skills/
+│   ├── data/           # Data access layer (Classes & Utilities)
+│   ├── layouts/        # Page layouts (if any)
+│   ├── pages/          # File-based routing
+│   ├── styles/         # Global styles (if any)
+│   └── utils/          # Helper functions
+├── astro.config.ts     # Astro configuration
+├── package.json        # Dependencies & Scripts
+└── tsconfig.json       # TypeScript configuration
+```
+
+## 3. Code Style & Conventions
+
+### General Formatting
+- **Indentation**: 2 spaces.
+- **Semicolons**: **Preferred**. While mixed in some older files, new code should use semicolons.
+- **Quotes**: 
+  - **Code**: Single quotes `'string'`.
+  - **Imports**: Double quotes `"package"` or single quotes `'./file'` (mixed, generally follow file context).
+  - **JSX/Attributes**: Double quotes `<Component prop="value" />`.
+- **Line Endings**: LF.
+
+### TypeScript & JavaScript
+- **Strictness**: `strictNullChecks` is enabled via `astro/tsconfigs/strict`.
+- **Path Aliases**: 
+  - Use `~/` to refer to `src/` (e.g., `import { data } from '~/data/data'`).
+- **Naming**:
+  - Components/Classes: `PascalCase` (e.g., `Header.astro`, `Posts`).
+  - Variables/Functions: `camelCase` (e.g., `getPublished`).
+  - Constants: `camelCase` or `UPPER_CASE`.
+  - Private Fields: Use JS private fields `#field` over TypeScript `private` keyword where possible.
+- **Error Handling**: Use `try...catch` or explicit checks (e.g., `if (!entry) throw new Error(...)`).
+
+### Astro Components (.astro)
+- **Structure**:
+  ```astro
+  ---
+  // Imports
+  import { Picture } from "astro:assets";
+  import { data } from "~/data/data";
+  
+  // Logic (Top-level await supported)
+  const { title } = Astro.props;
+  const posts = await data.posts.getPublished();
+  ---
+  <!-- Template -->
+  <div class="container">
+    <h1>{title}</h1>
+    {posts.map(post => <a href={post.slug}>{post.data.title}</a>)}
+  </div>
+
+  <style>
+    /* Scoped CSS */
+    .container { 
+      max-width: var(--content-width); 
+    }
+    /* Nesting is supported and encouraged */
+    .parent { 
+      .child { color: red; } 
+    }
+  </style>
+  ```
+- **Images**: Use `<Picture />` from `astro:assets` for optimized images.
+- **CSS**: 
+  - Use scoped `<style>` blocks at the bottom of the file.
+  - **Variables**: Use CSS variables for theming (e.g., `var(--content-width)`, `var(--t-fg)`).
+
+## 4. Architecture & Patterns
+
+### Data Access Layer (`src/data/`)
+The project uses a dedicated data access layer instead of querying collections directly in components.
+
+- **Pattern**: 
+  - Data logic is encapsulated in classes (e.g., `class Posts`).
+  - These classes wrap `getCollection` and `getEntry` from `astro:content`.
+  - They provide helper methods like `getPublished()`, sorting, and mapping.
+  - **Export**: A central `data` object aggregates all services.
+
+**Example (`src/data/data.posts.ts`):**
+```typescript
+import { getCollection } from "astro:content";
+
+class Posts {
+  // Private mapper for transforming raw entries
+  #map = (post) => {
+    return { ...post, derivedProp: '...' };
+  }
+
+  public getPublished = async () => {
+    const collection = await getCollection('posts');
+    return collection
+      .map(this.#map)
+      .sort((a, b) => b.data.pubDate - a.data.pubDate);
+  }
+}
+
+export const posts = new Posts();
+```
+
+**Usage:**
+```typescript
+import { data } from "~/data/data";
+const posts = await data.posts.getPublished();
+```
+
+### Content Collections (`src/content/`)
+- Defined in `src/content.config.ts`.
+- Uses `zod` for schema validation.
+- Loaders: Uses `glob` loader.
+- Current Collections: `posts`, `experiences`, `skills`.
+
+## 5. Environment & Configuration
+- **Package Manager**: `pnpm`
+- **Config**: `astro.config.ts` handles integrations (MDX, Sitemap, Icon, etc.).
+- **TS Config**: `tsconfig.json` extends `astro/tsconfigs/strict`.
+
+## 6. Dependencies
+- **Core**: `astro`, `@astrojs/mdx`, `astro-icon`.
+- **Styling**: Standard CSS (scoped), `less` is in devDependencies.
+- **Assets**: `@fontsource/vt323` (font), `sharp` (image processing).