Add themes, static assets, and logo

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Co-Authored-By: Claude <noreply@anthropic.com>

themes/modern-card-ui/theme.json

@@ -0,0 +1,67 @@
+{
+  "template_id": "modern-card-ui-theme",
+  "template_path": "./themes/modern-card-ui",
+  "template_type": "card",
+  "data_schema": "../../schemas/post_schema.json",
+  "required_fields": [
+    "platform",
+    "id",
+    "title",
+    "author",
+    "timestamp",
+    "score",
+    "replies",
+    "url"
+  ],
+  "optional_fields": [
+    "content",
+    "source",
+    "tags",
+    "meta"
+  ],
+  "css_dependencies": [
+    "./themes/modern-card-ui/styles.css"
+  ],
+  "js_dependencies": [
+    "./themes/modern-card-ui/interactions.js"
+  ],
+  "templates": {
+    "card": "./themes/modern-card-ui/card-template.html",
+    "list": "./themes/modern-card-ui/list-template.html",
+    "detail": "./themes/modern-card-ui/detail-template.html",
+    "comment": "./themes/modern-card-ui/comment-template.html"
+  },
+  "render_options": {
+    "container_selector": "#posts-container",
+    "batch_size": 20,
+    "lazy_load": true,
+    "animate": true,
+    "hover_effects": true,
+    "card_elevation": true
+  },
+  "filters": {
+    "platform": true,
+    "date_range": true,
+    "score_threshold": true,
+    "source": true
+  },
+  "sorting": {
+    "default_field": "timestamp",
+    "default_order": "desc",
+    "available_fields": [
+      "timestamp",
+      "score",
+      "replies",
+      "title"
+    ]
+  },
+  "color_scheme": {
+    "primary": "#1976D2",
+    "secondary": "#FFFFFF",
+    "accent": "#FF5722",
+    "background": "#FAFAFA",
+    "surface": "#FFFFFF",
+    "text_primary": "#212121",
+    "text_secondary": "#757575"
+  }
+}