feat(child-theme): scaffold asterion-bricks v0.1.0

Initial child theme structure inheriting from Bricks parent. Token-driven,
RGPD-native, mobile-first foundation ready for component and template work.

What's in this commit
- style.css: WP theme metadata (Template: bricks, v0.1.0)
- functions.php: enqueue cascade tokens -> utilities -> components,
  defer-loaded main.js, font preload, theme support, image sizes
  (av-hero 2400x1350, av-card 800x600, av-thumb 400x300), Gutenberg
  default styles dequeued
- theme.json: Gutenberg color/typo palette mirroring tokens
- assets/css/tokens.css: full design system per Design Handoff section 2
  (brand colors, neutrals, semantics, type scale + line-heights, 8pt
  spacing, radii, shadows, z-index, motion, prefers-reduced-motion)
- assets/css/utilities.css: modern reset + .av-container, .av-skip-link,
  .av-sr-only, .av-stack, .av-section helpers, opinionated heading scale
- assets/css/components.css: index of planned components + buttons
  (5 variants x 4 sizes per Design Handoff section 3.1) and links
- assets/js/main.js: vanilla skeleton with header scroll, IntersectionObserver
  reveal, count-up, mobile drawer; respects prefers-reduced-motion
- inc/cpt.php: register_post_type case_study (slug /customers/) + scenario
  (slug /scenarios/) + shared 'industry' taxonomy
- inc/seo.php: Organization JSON-LD on home; placeholders for Product,
  Article, FAQPage, BreadcrumbList
- assets/fonts/: Inter Variable + Italic WOFF2 self-hosted (RGPD; no
  Google Fonts CDN). Inter Display @font-face commented — Inter 4+ uses
  opsz axis from the same file.

Out of scope (intentionally deferred)
- Component fills: cards, forms, navigation, alerts, modals, tabs (placeholders)
- Page templates: home and beyond
- Bricks JSON template exports
- Schema.org Product / Article / FAQPage / BreadcrumbList implementations

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

wp-content/themes/asterion-bricks/style.css

@@ -0,0 +1,18 @@
+/*
+Theme Name:  Asterion Bricks
+Theme URI:   https://asterionvr.com
+Template:    bricks
+Author:      Asterion VR
+Author URI:  https://asterionvr.com
+Description: Custom child theme for asterionvr.com — built on Bricks Builder. Tactical-cinematic design system for the PROSERVE XR training platform marketed to European security forces (police, special forces, military, firefighters). Token-driven, RGPD-native, mobile-first, WCAG 2.1 AA.
+Version:     0.1.0
+Requires at least: 6.0
+Tested up to: 6.5
+Requires PHP: 8.0
+License:     GPL v2 or later
+License URI: https://www.gnu.org/licenses/gpl-2.0.html
+Text Domain: asterion-bricks
+Tags:        bricks, child-theme, custom
+*/
+
+/* CSS lives in /assets/css/. This file exists only for the WordPress theme metadata above. */