Serve the blog at the custom domain blog.jaysinh.dev (#103)

The site has been served as a GitHub Pages project site at
ultimatecoder.github.io/Blog/, which forced a "/Blog" baseurl through
_config.yml and scripts/test. That prefix already caused one production
bug (#100, tag links 404) and still breaks the root-absolute favicon and
apple-touch-icon paths in _includes/head.html, which resolve against the
domain root rather than /Blog/.

Point the site at blog.jaysinh.dev instead. The custom domain serves from
the domain root, so baseurl becomes empty:

* CNAME (new) tells GitHub Pages which domain to attach. The deploy is
  artifact-based (actions/deploy-pages), and Jekyll copies unknown root
  files into _site/, so the artifact carries it.
* _config.yml drops the "/Blog" baseurl.
* _config_production.yml points url at the new host, which feeds
  jekyll-seo-tag canonicals and the jekyll-sitemap output.
* scripts/test no longer needs --swap-urls "^/Blog:" — with an empty
  baseurl, _site/ on disk already matches the served paths. The 73
  internal links now pass unrewritten, which is what proves the change
  is internally consistent.

Tag links need no change: #102 routed them through relative_url, so they
pick up the empty baseurl and render as /tags/<tag>/ automatically.
Posts referencing {{ site.url }}{{ site.baseurl }}/assets/... resolve
correctly for the same reason.

Also ignore www.gweca.ac.in in the link checker. It returns 200 to curl
over both HTTP and HTTPS but 415 to htmlproofer — the same bot/WAF
blocking already recorded as "ci-block" for other hosts. Unrelated to
this change, but it fails CI.

Co-authored-by: Jaysinh Shukla <jaysinhshukla@Jaysinhs-MacBook-Pro-2.local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: 3 people

CNAME

@@ -0,0 +1 @@
+blog.jaysinh.dev

README.md

@@ -1,7 +1,7 @@
-# Blog - [Jaysinh's own heed](https://ultimatecoder.github.io/Blog/)
+# Blog - [Jaysinh's own heed](https://blog.jaysinh.dev/)
 
 This repository contains backend tool I use to write and publish my blog. Since begining, I have invested more time in identifying proper flow than writing blog post.
 
 * Framework: Jekyll
-* URL: https://ultimatecoder.github.io/Blog/
+* URL: https://blog.jaysinh.dev/
 * Build/deploy: GitHub Actions ([`.github/workflows/`](.github/workflows)) — every pull request runs a build + link-check ([`ci.yml`](.github/workflows/ci.yml)), and pushes to `master` build and publish to GitHub Pages ([`pages.yml`](.github/workflows/pages.yml)).

_config.yml

@@ -20,9 +20,8 @@ description: > # this means to ignore newlines until "baseurl:"
   and an Actor by gene. I write mostly on programming topics. Browse through
   my blog posts to identify my taste of writing.
 
-# GitHub Pages project site path. Keep in sync with the "^/Blog" prefix
-# in scripts/test's --swap-urls, which strips it for local link-checking.
-baseurl: "/Blog" # the subpath of your site, e.g. /blog
+# Served at the root of the custom domain in CNAME, so there is no subpath.
+baseurl: "" # the subpath of your site, e.g. /blog
 twitter_username: jaysinhp
 github_username:  ultimatecoder
 

_config_production.yml

@@ -1 +1 @@
-url: "https://ultimatecoder.github.io" # the base hostname & protocol for your site, e.g. https://example.com
+url: "https://blog.jaysinh.dev" # the base hostname & protocol for your site, e.g. https://example.com

scripts/test

@@ -7,8 +7,8 @@ export LANG=en_US.UTF-8
 
 # External URLs htmlproofer should not fail on. Two reasons appear here:
 #   dead     — confirmed 404/gone, unrelated to this repo
-#   ci-block — live (200 from a browser) but returns 403 to GitHub Actions'
-#              shared runner IPs, i.e. bot/WAF blocking, not a broken link
+#   ci-block — live (200 from a browser) but returns 403/415 to htmlproofer,
+#              i.e. bot/WAF blocking, not a broken link
 ignore_urls=(
   "https://drive.google.com/file/d/0B_TmiicGbqjHb2ZGcE5QYmtXRHc/view?usp=sharing"  # dead
   "https://reps.mozilla.org/e/maker-party-gujarat/"                                # dead
@@ -17,14 +17,12 @@ ignore_urls=(
   "https://www.ahduni.edu.in/"                                                     # ci-block
   "https://pythonexpress.in/"                                                      # ci-block
   "https://www.hackerearth.com"                                                    # ci-block
+  "http://www.gweca.ac.in"                                                         # ci-block
 )
 # htmlproofer wants a single comma-separated string.
 ignore_urls_csv=$(IFS=,; echo "${ignore_urls[*]}")
 
-# _site/ is the site root on disk, but pages link internally with the
-# "/Blog" baseurl (this is a GitHub Pages project site, not a custom
-# domain) — strip it so internal-link checks resolve against ./_site/.
-# Keep this "^/Blog" prefix in sync with baseurl in _config.yml.
+# baseurl is empty (the site is served at the root of a custom domain), so
+# internal links already resolve against ./_site/ with no URL rewriting.
 bundle exec htmlproofer ./_site/ --only-4xx --no-enforce-https \
-  --swap-urls "^/Blog:" \
   --ignore-urls "$ignore_urls_csv"