feat: port all template categories to JSON format

- Ported Minimalist templates to JSON (Swiss Grid, Brutalist, etc.)
- Ported Tech templates to JSON (SaaS, Terminal, Cyberpunk, etc.)
- Ported Creative templates to JSON (Art Gallery, Zine, Pop Art, etc.)
- Ported Industrial templates to JSON (Blueprint, Factory, Schematic, etc.)
- Ported Nature templates to JSON (Botanical, Ocean, Mountain, etc.)
- Ported Lifestyle templates to JSON (Cookbook, Travel, Coffee House, etc.)
- Ported Vintage templates to JSON (Art Deco, Medieval, Retro 80s, etc.)
- Updated README.md to reflect the new JSON-based style system (example configuration and contribution workflow)
- Completed migration of over 150 styles to the new architecture

README.md

@@ -63,7 +63,7 @@ In a world where document formatting tools are increasingly locked behind paywal
 
 <div align="center">
 
-| 🌟 **Free Forever** | 🔒 **Privacy First** | 🎨 **40+ Styles** | 🤝 **Open Source** |
+| 🌟 **Free Forever** | 🔒 **Privacy First** | 🎨 **150+ Styles** | 🤝 **Open Source** |
 |:---:|:---:|:---:|:---:|
 | No fees, no trials, no catches | All processing happens locally on your machine | From minimalist to ornate, academic to artistic | MIT licensed — use it, fork it, improve it together |
 
@@ -78,7 +78,7 @@ In a world where document formatting tools are increasingly locked behind paywal
 ### 🎯 Core Capabilities
 
 - **📄 Universal Markdown Support** — Drop in any `.md`, `.txt`, or `.markdown` file
-- **🎨 40+ Typography Styles** — Curated across 8 aesthetic categories
+- **🎨 150+ Typography Styles** — Curated across 8 aesthetic categories
 - **📐 Multiple Paper Sizes** — A4 and Letter formats supported
 - **💾 Local Processing** — Your documents never leave your machine
 - **🖥️ Native Desktop Apps** — Built with Tauri for Windows, macOS, and Linux
@@ -86,7 +86,7 @@ In a world where document formatting tools are increasingly locked behind paywal
 
 ### 🏛️ Style Categories
 
-Each style is a labor of love, crafted with attention to typographic detail:
+Each of the 163+ styles is a labor of love, crafted with attention to typographic detail:
 
 | Category | Description | Example Styles |
 |----------|-------------|----------------|
@@ -310,35 +310,58 @@ Want to contribute a new style to the collective? Here's how:
 1. **Choose a Category** — Find the appropriate file in `/styles/`
 2. **Define Your Style** — Create a complete `StyleOption` object:
 
-```typescript
+```json
 {
-  id: 'my-custom-style',
-  name: 'My Style',
-  category: 'Creative',
-  description: 'A brief description of the aesthetic',
-  vibe: 'Keywords that capture the feeling',
-  googleFontsImport: 'https://fonts.googleapis.com/css2?family=YourFont&display=swap',
-  wordConfig: {
-    heading1: {
-      font: 'Your Font',
-      size: 24,
-      color: '1a1a1a',
-      bold: true,
-      // ... more properties
+  "id": "my-custom-style",
+  "name": "My Style",
+  "category": "Creative",
+  "description": "A brief description of the aesthetic",
+  "vibe": "Keywords that capture the feeling",
+  "googleFontsImport": "https://fonts.googleapis.com/css2?family=YourFont&display=swap",
+  "typography": {
+    "fonts": {
+      "heading": "Your Font",
+      "body": "Your Body Font",
+      "code": "Your Code Font"
     },
-    heading2: { /* ... */ },
-    body: { /* ... */ },
-    accentColor: '6366f1'
+    "colors": {
+      "text": "1a1a1a",
+      "textSecondary": "4a4a4a",
+      "background": "ffffff",
+      "accent": "6366f1",
+      "border": "e5e5e5",
+      "codeBg": "f3f4f6",
+      "blockquoteBg": "f9fafb",
+      "blockquoteBorder": "6366f1"
+    }
   },
-  previewCss: `
-    h1 { font-family: 'Your Font'; font-size: 24pt; }
-    /* ... match wordConfig exactly */
-  `
+  "elements": {
+    "h1": {
+      "font": "heading",
+      "size": 24,
+      "color": "text",
+      "bold": true,
+      "spacing": { "before": 24, "after": 12, "line": 1.2 }
+    },
+    "p": {
+      "font": "body",
+      "size": 11,
+      "color": "text",
+      "spacing": { "before": 0, "after": 10, "line": 1.5 }
+    }
+    // ... define other elements (h2-h6, blockquote, code, etc.)
+  },
+  "page": {
+    "margins": { "top": 72, "bottom": 72, "left": 72, "right": 72 },
+    "columns": 1,
+    "header": true,
+    "footer": true
+  }
 }
 ```
 
-3. **Export It** — Add to the category's export array
-4. **Test Both Paths** — Verify preview looks right AND Word export works
+3. **Save It** — Save as a `.json` file in `src-tauri/templates/<category>/`
+4. **Build** — The app automatically loads JSON templates at runtime
 5. **Share With All** — Submit a PR so everyone benefits!
 
 ### Configuration Options