feat(industries): build 5-page Industries section

Implements the Industries hub + 4 detail pages (Police, Special Forces,
Military, Firefighters) following the same data + partial + custom
template pattern as Solutions.

- inc/industries-data.php: 4 industries keyed by slug, copy verbatim
  from PDF Strategie & Contenu D.7-D.10.
- template-parts/industry-detail.php: hero + section iterator + shared
  conversion banner. Hero differs from Solution's: eyebrow + tagline-as-H1
  (no trademark concat), no upsell block.
- templates/page-industry-detail.php: Custom Template assigned to the
  4 child pages, looks up slug in industries-data.
- templates/page-industries-overview.php: Hub /industries/ with 4 cards.

5 pages seeded by one-shot mu-plugin (asterion-seed-industries.php in
LocalWP) and verified HTTP 200:
  /industries/                  55 KB
  /industries/police/           63 KB
  /industries/special-forces/   62 KB
  /industries/military/         60 KB
  /industries/firefighters/     60 KB

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

wp-content/themes/asterion-bricks/templates/page-industries-overview.php

@@ -0,0 +1,83 @@
+<?php
+/**
+ * Template Name: Industries Overview
+ *
+ * Hub page /industries/ — lists the 4 industries as cards.
+ *
+ * @package AsterionBricks
+ */
+defined('ABSPATH') || exit;
+
+get_header();
+$home_url = home_url('/');
+
+$industries = [
+    [
+        'eyebrow'  => 'National & Municipal',
+        'title'    => 'Police',
+        'excerpt'  => 'Vehicle stops, identity checks, urban CQB, de-escalation, riot containment. Built for the realities of contemporary policing.',
+        'href'     => '/industries/police/',
+        'gradient' => 'linear-gradient(135deg,#1F3252,#0B1F3A)',
+    ],
+    [
+        'eyebrow'  => 'Tactical units',
+        'title'    => 'Special Forces',
+        'excerpt'  => 'Hostage rescue, dynamic entries, hostile crowd extraction, sniper-spotter coordination. Built for the units where every error has a name.',
+        'href'     => '/industries/special-forces/',
+        'gradient' => 'linear-gradient(135deg,#1F3252,#0B1F3A)',
+    ],
+    [
+        'eyebrow'  => 'Armed forces',
+        'title'    => 'Military',
+        'excerpt'  => 'MOUT, convoy escort, FOB defense, IED awareness, joint operation drills. Built for armed forces that deploy fast and adapt faster.',
+        'href'     => '/industries/military/',
+        'gradient' => 'linear-gradient(135deg,#1F3252,#0B1F3A)',
+    ],
+    [
+        'eyebrow'  => 'Emergency services',
+        'title'    => 'Firefighters',
+        'excerpt'  => "Structure fires, hazmat, multi-casualty triage, confined-space rescue, industrial accidents. Built for first responders who can't rehearse the worst day at full scale.",
+        'href'     => '/industries/firefighters/',
+        'gradient' => 'linear-gradient(135deg,#1F3252,#0B1F3A)',
+    ],
+];
+?>
+
+<section class="av-hero" aria-labelledby="industries-headline">
+  <div class="av-hero__media" aria-hidden="true">
+    <div style="width:100%;height:100%;background:
+        radial-gradient(ellipse at 50% 40%, rgba(11,31,58,0.4), transparent 65%),
+        linear-gradient(135deg, #081427 0%, #0B1F3A 50%, #1F3252 100%);"></div>
+  </div>
+  <div class="av-container">
+    <div class="av-hero__inner">
+      <p class="av-hero__eyebrow"><?php esc_html_e('Industries', 'asterion-bricks'); ?></p>
+      <h1 id="industries-headline" class="av-hero__headline">Built with operators, for operators.</h1>
+      <p class="av-hero__sub">
+        PROSERVE&trade; is not a generic VR platform repackaged for the public sector. Every scenario, every weapon profile, every instructor metric was specified by serving and former operators in close partnership with our engineering team.
+      </p>
+    </div>
+  </div>
+</section>
+
+<section class="av-section" data-av-reveal>
+  <div class="av-container">
+    <div class="av-grid-4" style="grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));">
+      <?php foreach ($industries as $i) : ?>
+        <article class="av-card">
+          <a href="<?php echo esc_url($home_url . ltrim($i['href'], '/')); ?>" class="av-card__media" aria-hidden="true" tabindex="-1" style="background:<?php echo esc_attr($i['gradient']); ?>;display:block;"></a>
+          <div class="av-card__body">
+            <span class="av-card__eyebrow"><?php echo esc_html($i['eyebrow']); ?></span>
+            <h2 class="av-card__title"><a href="<?php echo esc_url($home_url . ltrim($i['href'], '/')); ?>" style="color:inherit;text-decoration:none;"><?php echo esc_html($i['title']); ?></a></h2>
+            <p class="av-card__excerpt"><?php echo esc_html($i['excerpt']); ?></p>
+            <div class="av-card__cta">
+              <a href="<?php echo esc_url($home_url . ltrim($i['href'], '/')); ?>" class="av-link av-link--with-arrow"><?php echo esc_html($i['title']); ?> training</a>
+            </div>
+          </div>
+        </article>
+      <?php endforeach; ?>
+    </div>
+  </div>
+</section>
+
+<?php get_footer(); ?>