Port homepage, posts section, shortcodes; update hugo.toml menus

- content/_index.md: homepage with site description and callout examples
- content/posts/asw-vocabulary.md: ASW data-* attribute vocabulary reference
- content/posts/getting-started.md: ASW-Hugo setup guide (updated URLs)
- hugo.toml: add params, taxonomies, menus (main + docs sidebar), ToC settings
- layouts/partials/nav.html: dynamic Hugo menu rendering (was hardcoded)
- layouts/shortcodes/callout.html, wikilink.html: ported from asw-hugo theme

Closes: asw#17, asw#13, asw#11, asw#16
28 pages build clean, deploy confirmed at port 8000.

hugo.toml

@@ -2,13 +2,146 @@ baseURL = 'https://asw.trentuna.com/'
 languageCode = 'en'
 title = 'ASW — Agentic Semantic Web'
 
+[params]
+  description = "Agentic Semantic Web — semantic HTML, data-* attributes, and CSS-only styling for the agentic era."
+
+[taxonomies]
+  tag = "tags"
+
+# ── Navigation menus ──────────────────────────────────────────────────
+[[menus.main]]
+  name = "Home"
+  url  = "/"
+  weight = 1
+
+[[menus.main]]
+  name = "Docs"
+  url  = "/docs/"
+  weight = 2
+
+[[menus.main]]
+  name = "Vault"
+  url  = "/vault/"
+  weight = 3
+
+[[menus.main]]
+  name = "Papers"
+  url  = "/papers/"
+  weight = 4
+
+[[menus.main]]
+  name = "Posts"
+  url  = "/posts/"
+  weight = 5
+
+[[menus.main]]
+  name = "Tags"
+  url  = "/tags/"
+  weight = 6
+
+# ── Docs sidebar menu ─────────────────────────────────────────────────
+# Parent entries (identifier set, no url) render as <small> section labels.
+# Child entries (parent set) render as sidebar nav links.
+
+[[menus.docs]]
+  name       = "Getting Started"
+  identifier = "docs-getting-started"
+  weight     = 10
+
+[[menus.docs]]
+  name   = "Introduction"
+  url    = "/docs/introduction/"
+  parent = "docs-getting-started"
+  weight = 11
+
+[[menus.docs]]
+  name       = "Core"
+  identifier = "docs-core"
+  weight     = 20
+
+[[menus.docs]]
+  name   = "Reset"
+  url    = "/docs/reset/"
+  parent = "docs-core"
+  weight = 21
+
+[[menus.docs]]
+  name   = "Semantic HTML"
+  url    = "/docs/on-semantic-html/"
+  parent = "docs-core"
+  weight = 22
+
+[[menus.docs]]
+  name   = "Data Attributes"
+  url    = "/docs/data-attributes/"
+  parent = "docs-core"
+  weight = 23
+
+[[menus.docs]]
+  name       = "Components"
+  identifier = "docs-components"
+  weight     = 30
+
+[[menus.docs]]
+  name   = "Layouts"
+  url    = "/docs/layouts/"
+  parent = "docs-components"
+  weight = 31
+
+[[menus.docs]]
+  name   = "Components"
+  url    = "/docs/components/"
+  parent = "docs-components"
+  weight = 32
+
+[[menus.docs]]
+  name   = "Accordion & Dialog"
+  url    = "/docs/accordion-dialog/"
+  parent = "docs-components"
+  weight = 33
+
+[[menus.docs]]
+  name   = "Navigation"
+  url    = "/docs/navigation/"
+  parent = "docs-components"
+  weight = 34
+
+[[menus.docs]]
+  name       = "Reference"
+  identifier = "docs-reference"
+  weight     = 40
+
+[[menus.docs]]
+  name   = "Charts"
+  url    = "/docs/charts/"
+  parent = "docs-reference"
+  weight = 41
+
+[[menus.docs]]
+  name   = "Syntax Highlighting"
+  url    = "/docs/chroma/"
+  parent = "docs-reference"
+  weight = 42
+
+[[menus.docs]]
+  name   = "ASW Vocabulary"
+  url    = "/posts/asw-vocabulary/"
+  parent = "docs-reference"
+  weight = 43
+
+# ── Markup settings ───────────────────────────────────────────────────
 [markup.goldmark.renderer]
   unsafe = true  # allow inline HTML in markdown (<mark>, <time>, etc.)
 
+[markup.tableOfContents]
+  startLevel = 2
+  endLevel   = 3
+  ordered    = false
+
 [markup.highlight]
-  noClasses = true
+  noClasses   = true
+  codeFences  = true
+  guessSyntax = true
 
 [build.buildStats]
   enable = true
-# build pipeline wired
-# e2e test 15:37:53Z