asw-v01: archive deferred content (packs, site, lab, legacy examples)

- 2.1: packs/ -> archive/packs/
- 2.2: site/ -> archive/site/
- 2.3: src/lab/ -> archive/lab/
- 2.4: examples/ -> archive/examples-legacy/ (SSI-based)

archive/packs/hugo/layouts/shortcodes/wikilink.html

@@ -0,0 +1,20 @@
+{{- /*
+  wikilink shortcode — renders an internal link with ASW data-wikilink attribute.
+  
+  Usage:
+    {{< wikilink "Display Text" "/path/to/page/" >}}
+  
+  Param 0 (required): display text
+  Param 1 (optional): href path. Defaults to /display-text-slugified/
+  
+  Examples:
+    {{< wikilink "My Note" >}}
+    → <a href="/my-note/" data-wikilink>My Note</a>
+    
+    {{< wikilink "My Note" "/vault/my-note/" >}}
+    → <a href="/vault/my-note/" data-wikilink>My Note</a>
+*/ -}}
+{{- $text := .Get 0 -}}
+{{- $slug := $text | lower | replace " " "-" -}}
+{{- $href := .Get 1 | default (printf "/%s/" $slug) -}}
+<a href="{{ $href | relURL }}" data-wikilink>{{ $text }}</a>