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>

packs/caddy/caddy-errors.conf

@@ -0,0 +1,66 @@
+# ASW Caddy Error Pages — Caddyfile snippet
+#
+# Paste this inside your site block (not at global scope).
+# Adjust the root path to where your agentic-semantic-web repo lives.
+#
+# Assumes asw.css is served at /asw/asw.css
+# (serve the agentic-semantic-web repo root as /asw/ — see README.md)
+
+# ── Error pages ──────────────────────────────────────────────────────────────
+#
+# Caddy's handle_errors block intercepts any response with a matching
+# status code before it reaches the client.
+#
+# Rewrite the path to the ASW static error page, then serve it from
+# the agentic-semantic-web repo root.
+
+handle_errors {
+    rewrite * /errors/{http.error.status_code}.html
+    file_server {
+        root /home/exedev/projects/agentic-semantic-web
+    }
+}
+
+# ── Serving asw.css ───────────────────────────────────────────────────────
+#
+# The error pages load asw.css from /asw/asw.css.
+# Add this route to your site block so the CSS is reachable.
+# (Skip if you already serve /asw/ from this repo elsewhere.)
+
+handle /asw/* {
+    uri strip_prefix /asw
+    file_server {
+        root /home/exedev/projects/agentic-semantic-web
+    }
+}
+
+
+# ── Example site block ────────────────────────────────────────────────────────
+#
+# example.com {
+#     root * /var/www/html
+#     file_server
+#
+#     handle /asw/* {
+#         uri strip_prefix /asw
+#         file_server {
+#             root /home/exedev/projects/agentic-semantic-web
+#         }
+#     }
+#
+#     handle_errors {
+#         rewrite * /errors/{http.error.status_code}.html
+#         file_server {
+#             root /home/exedev/projects/agentic-semantic-web
+#         }
+#     }
+# }
+#
+# Supported error codes (from errors/ directory):
+#   400 — Bad Request
+#   401 — Unauthorized
+#   403 — Forbidden
+#   404 — Not Found
+#   500 — Internal Server Error
+#   502 — Bad Gateway
+#   503 — Service Unavailable