Improve SEO with structured data fixes, sitemap config, and meta tags

- Enable enableGitInfo for accurate lastmod dates in sitemap and JSON-LD
- Fix mainEntityOfPage in Article JSON-LD to use proper WebPage object
- Fix duplicate og:url meta tag on post pages
- Add sitemap configuration with changefreq and priority
- Switch RSS feed from summary to full content
- Use params.author.name instead of params.github in Article JSON-LD
- Add keywords meta tag generated from post tags
- Add publisher logo to Article JSON-LD for rich results eligibility

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: johanrin

hugo.toml

@@ -9,6 +9,9 @@ defaultContentLanguage = "en-us"
 
 # Enable emojis globally
 enableEmoji = true
+
+# Use git commit dates for .Lastmod (improves sitemap and structured data)
+enableGitInfo = true
 ignoreErrors = ["additional-script-loading-error"] # ignore error of loading additional scripts.
 
 # traditional way: theme component resides in directory 'themes'
@@ -93,7 +96,7 @@ theme = "hugo-blog-awesome"
   # The file `custom.js` is loaded on each page (before body tag ends).
   dateFormat = "" # date format used to show dates on various pages. If nothing is specified, then "2 Jan 2006" format is used.
   # See https://gohugo.io/functions/time/format/ for available date formats.
-  rssFeedDescription = "summary" # available options: 1) summary 2) full
+  rssFeedDescription = "full" # available options: 1) summary 2) full
   # summary - includes a short summary of the blog post in the RSS feed. Generated using Hugo .Summary .
   # full - includes full blog post in the RSS feed. Generated using Hugo .Content .
   # By default (or if nothing is specified), summary is used.
@@ -147,5 +150,10 @@ url = "/index.xml"
   [caches.images]
     dir = ':cacheDir/images'
 
+# Sitemap configuration for search engine crawlers
+[sitemap]
+  changefreq = "weekly"
+  priority = 0.5
+
 # Generate robots.txt using an embedded template
 enableRobotsTXT = true

layouts/partials/custom-head.html

@@ -53,8 +53,10 @@
 {{/* Canonical URL */}}
 <link rel="canonical" href="{{ .Permalink }}" />
 
-{{/* Open Graph URL - for all pages */}}
+{{/* Open Graph URL - only for non-post pages (posts get og:url from meta/post.html) */}}
+{{ if ne .Section "posts" }}
 <meta property="og:url" content="{{ .Permalink }}" />
+{{ end }}
 
 {{/* Open Graph Image dimensions for better social previews */}}
 <meta property="og:image:width" content="1200" />
@@ -64,6 +66,11 @@
 {{- $description := .Description | default .Site.Params.description -}}
 <meta name="twitter:image:alt" content="{{ $description }}" />
 
+{{/* Keywords meta tag from post tags */}}
+{{ with .Params.tags }}
+<meta name="keywords" content="{{ delimit . ", " }}" />
+{{ end }}
+
 {{/* Open Graph Type - set to "article" for posts, "website" for all other pages */}}
 {{ if eq .Section "posts" }}
   {{/* og:type="article" is already set in theme's meta/post.html */}}

layouts/partials/meta/post.html

@@ -44,12 +44,15 @@
         "headline": {{ .Title }},
         "author": {
         "@type": "Person",
-        "name": "{{ .Site.Params.github }}"
+        "name": "{{ .Site.Params.author.name }}"
         },
         "datePublished": "{{ dateFormat "2006-01-02" .Date }}",
         "description": {{ .Description }},
         "wordCount": {{ .WordCount }},
-        "mainEntityOfPage": "True",
+        "mainEntityOfPage": {
+        "@type": "WebPage",
+        "@id": "{{ .Permalink }}"
+        },
         "dateModified": "{{ dateFormat "2006-01-02" .Lastmod }}",
         "image": {
         "@type": "ImageObject",
@@ -59,7 +62,11 @@
         },
         "publisher": {
         "@type": "Organization",
-        "name": "{{ .Site.Title }}"
+        "name": "{{ .Site.Title }}",
+        "logo": {
+            "@type": "ImageObject",
+            "url": "{{ .Site.BaseURL }}avatar.jpg"
+        }
         }
     }
     </script>