feat: legacy import — packs, examples, lab, themes, docs, lineage

Import from agentic-semantic-web/ into restructured repo:
- 7 packs (apache, caddy, flask, hugo, nginx, pandoc, python)
- shared error pages (403-503)
- 17 lab experiments (boilerplate, charts, misc)
- 31 example pages (charts, components, content, layout, vault)
- 2 themes (garden, trentuna stub)
- 4 docs (llms.txt, vocabulary, philosophy, agent-directive)
- lineage.md (Pico/Open Props/Charts.css history)
- Hugo mounts for lab/ and examples/

All agentic.css references updated to asw.css.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

site/hugo.toml

@@ -165,3 +165,11 @@ title = 'ASW — Agentic Semantic Web'
 [[module.mounts]]
   source = "../dist"
   target = "static"
+
+[[module.mounts]]
+  source = "../src/lab"
+  target = "static/lab"
+
+[[module.mounts]]
+  source = "../examples"
+  target = "static/examples"