fix: correct search result URLs under subpath deployment

Override themes/hextra/assets/json/search-data.json to use .Permalink
instead of .RelPermalink. Under a project page deployment where baseURL
has a subpath like /go-tutorial/, RelPermalink omits the subpath, so
clicking a search result jumped to the wrong host path.

Also switch glossary entry key from relLangURL to absLangURL for the
same reason.

Author: appleboy

assets/json/search-data.json

@@ -0,0 +1,39 @@
+{{/* FlexSearch Index Data — override of themes/hextra/assets/json/search-data.json */}}
+{{/* Use .Permalink (absolute URL) instead of .RelPermalink so subpath */}}
+{{/* deployments (e.g. project pages at /repo/) link correctly from search results. */}}
+{{- $indexType := site.Params.search.flexsearch.index | default "content" -}}
+
+{{- if not (in (slice "content" "summary" "heading" "title" ) $indexType) -}}
+  {{- errorf "unknown flexsearch index type: %s" $indexType -}}
+{{- end -}}
+
+{{- $pages := where .Site.Pages "Kind" "in" (slice "page" "section") -}}
+{{- $pages = where $pages "Params.excludeSearch" "!=" true -}}
+{{- $pages = where $pages "Content" "!=" "" -}}
+
+{{- $output := dict -}}
+
+{{- range $index, $page := $pages -}}
+  {{- $pageTitle := $page.LinkTitle | default $page.File.BaseFileName -}}
+  {{- $pageLink := $page.Permalink -}}
+  {{- $data := partial "utils/fragments" (dict "context" $page "type" $indexType) -}}
+  {{- $output = $output | merge (dict $pageLink (dict "title" $pageTitle "data" $data)) -}}
+{{- end -}}
+
+{{/* Extract glossary data entries */}}
+{{- $glossaryEntries := dict -}}
+{{- with (index .Site.Data .Site.Language.Lang "termbase") -}}
+  {{- range . -}}
+    {{- $entry := cond (.abbr) (printf "%s %s %s" .abbr .term .definition) (printf "%s %s" .term .definition) -}}
+    {{- $glossaryEntries = $glossaryEntries | merge (dict .term $entry) -}}
+  {{- end -}}
+{{- end -}}
+
+{{- $glossary := dict
+  "title" "Glossary"
+  "data" $glossaryEntries
+-}}
+
+{{- $output = $output | merge (dict (absLangURL "glossary") $glossary )}}
+
+{{- $output | jsonify -}}