feat(seo-audit): Add comprehensive SEO audit skill

Add ourdigital-seo-audit skill with:
- Full site audit orchestrator (full_audit.py)
- Google Search Console and PageSpeed API clients
- Schema.org JSON-LD validation and generation
- XML sitemap and robots.txt validation
- Notion database integration for findings export
- Core Web Vitals measurement and analysis
- 7 schema templates (article, faq, product, etc.)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

ourdigital-custom-skills/12-ourdigital-seo-audit/templates/notion_database_schema.json

@@ -0,0 +1,88 @@
+{
+  "_comment": "Default OurDigital SEO Audit Log Database",
+  "database_id": "2c8581e5-8a1e-8035-880b-e38cefc2f3ef",
+  "url": "https://www.notion.so/dintelligence/2c8581e58a1e8035880be38cefc2f3ef",
+
+  "properties": {
+    "Issue": {
+      "type": "title",
+      "description": "Primary identifier - issue title"
+    },
+    "Site": {
+      "type": "url",
+      "description": "The audited site URL (e.g., https://blog.ourdigital.org)"
+    },
+    "Category": {
+      "type": "select",
+      "options": [
+        { "name": "Technical SEO", "color": "blue" },
+        { "name": "On-page SEO", "color": "green" },
+        { "name": "Content", "color": "purple" },
+        { "name": "Local SEO", "color": "orange" },
+        { "name": "Performance", "color": "red" },
+        { "name": "Schema/Structured Data", "color": "yellow" },
+        { "name": "Sitemap", "color": "pink" },
+        { "name": "Robots.txt", "color": "gray" }
+      ]
+    },
+    "Priority": {
+      "type": "select",
+      "options": [
+        { "name": "Critical", "color": "red" },
+        { "name": "High", "color": "orange" },
+        { "name": "Medium", "color": "yellow" },
+        { "name": "Low", "color": "gray" }
+      ]
+    },
+    "Status": {
+      "type": "status",
+      "description": "Managed by Notion - default options: Not started, In progress, Done"
+    },
+    "URL": {
+      "type": "url",
+      "description": "Specific page with the issue"
+    },
+    "Found Date": {
+      "type": "date",
+      "description": "When issue was discovered"
+    },
+    "Audit ID": {
+      "type": "rich_text",
+      "description": "Groups findings from same audit session (format: domain-YYYYMMDD-HHMMSS)"
+    }
+  },
+
+  "page_content_template": {
+    "_comment": "Each finding page contains the following content blocks",
+    "blocks": [
+      {
+        "type": "heading_2",
+        "content": "Description"
+      },
+      {
+        "type": "paragraph",
+        "content": "{{description}}"
+      },
+      {
+        "type": "heading_2",
+        "content": "Impact"
+      },
+      {
+        "type": "callout",
+        "icon": "⚠️",
+        "content": "{{impact}}"
+      },
+      {
+        "type": "heading_2",
+        "content": "Recommendation"
+      },
+      {
+        "type": "callout",
+        "icon": "💡",
+        "content": "{{recommendation}}"
+      }
+    ]
+  },
+
+  "description": "Centralized SEO audit findings with categorized issues, priorities, and tracking status. Generated by ourdigital-seo-audit skill."
+}