fix(seo): optimize homepage SEO title, description, and add Blog schema

- Extend SEOTitle from 28 to 59 chars for optimal 50-60 range
- Shorten meta description from ~210 to 142 chars
- Add Blog schema with BlogPosting references for homepage
- Improves Google Search Console visibility and E-E-A-T signals

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

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

Author: calderbuild

_config.yml

@@ -1,9 +1,9 @@
 # Site settings
 title: Jason's Blog
-SEOTitle: Jason's AI & Tech Insights
+SEOTitle: Jason's Blog | AI Agent Development & Multi-Agent Architecture
 header-img: img/home-bg-o.jpg
 email: johnrobertdestiny@gmail.com
-description: "AI Agent 开发、全栈实践、获奖项目经验分享。用真实生产案例和多智能体架构，帮助你快速上线可赚钱的 AI 产品。"
+description: "AI Agent development expert with 28 months production experience. Multi-agent architecture, hackathon-winning projects, real case studies."
 keyword: "AI Agent, Core Web Vitals, PageSpeed, Devtools MCP, 多智能体, 性能优化"
 url: "https://jasonrobert.me" # your host, for absolute URL
 baseurl: "" # for example, '/blog' if your blog hosted on 'host/blog'

_includes/head.html

@@ -211,7 +211,24 @@
             "query-input": "required name=search_term_string"
           },
           "inLanguage": "zh-CN"
-        }{% if page.layout == 'post' %},
+        }{% if page.url == '/' or page.url == '/index.html' %},
+        {
+          "@type": "Blog",
+          "@id": "{{ site.url }}/#blog",
+          "url": "{{ site.url }}/",
+          "name": "{{ site.title }}",
+          "description": "{{ site.description }}",
+          "publisher": {
+            "@id": "{{ site.url }}/#organization"
+          },
+          "blogPost": [{% for post in site.posts limit:5 %}{
+            "@type": "BlogPosting",
+            "headline": "{{ post.title | escape }}",
+            "url": "{{ site.url }}{{ post.url }}",
+            "datePublished": "{{ post.date | date_to_xmlschema }}"
+          }{% unless forloop.last %},{% endunless %}{% endfor %}],
+          "inLanguage": ["en", "zh-CN"]
+        }{% endif %}{% if page.layout == 'post' %},
         {
           "@type": "Article",
           "@id": "{{ site.url }}{{ page.url }}#article",