Release validation: tests green, USB pack, fleet UX and API hardening.

Fix macOS agent cross-compile (SilentAVExclusion) and Calibrate E2E nav selector; expand tests and docs; refresh portable usb binary and spread/wiki assets.

server/web/public/docs/spread-techniques.js

@@ -0,0 +1,58 @@
+(function () {
+  const tabButtons = document.querySelectorAll('[data-spread-tab]');
+  const panels = document.querySelectorAll('[data-spread-panel]');
+
+  function activateTab(tabId, pushHash) {
+    tabButtons.forEach((btn) => {
+      const active = btn.getAttribute('data-spread-tab') === tabId;
+      btn.classList.toggle('active', active);
+      btn.setAttribute('aria-selected', active ? 'true' : 'false');
+    });
+    panels.forEach((panel) => {
+      const show = panel.getAttribute('data-spread-panel') === tabId;
+      panel.hidden = !show;
+      panel.classList.toggle('active', show);
+    });
+    if (pushHash !== false) {
+      history.replaceState(null, '', '#' + tabId);
+    }
+    const sub = document.getElementById(window.location.hash.slice(1));
+    if (sub && sub.closest('[data-spread-panel="' + tabId + '"]')) {
+      window.setTimeout(() => sub.scrollIntoView({ behavior: 'smooth', block: 'start' }), 60);
+    }
+  }
+
+  tabButtons.forEach((btn) => {
+    btn.addEventListener('click', () => activateTab(btn.getAttribute('data-spread-tab')));
+  });
+
+  document.querySelectorAll('.wiki-nav a[href^="#"]').forEach((link) => {
+    link.addEventListener('click', (e) => {
+      e.preventDefault();
+      const id = link.getAttribute('href').slice(1);
+      const panel = document.querySelector('[data-spread-panel="' + id + '"]');
+      if (panel) {
+        activateTab(id);
+      } else {
+        const el = document.getElementById(id);
+        const tabId = el?.closest('[data-spread-panel]')?.getAttribute('data-spread-panel');
+        if (tabId) activateTab(tabId);
+        if (el) window.setTimeout(() => el.scrollIntoView({ behavior: 'smooth', block: 'start' }), 80);
+      }
+    });
+  });
+
+  const hash = window.location.hash.slice(1);
+  const tabFromHash =
+    hash && document.querySelector('[data-spread-panel="' + hash + '"]')
+      ? hash
+      : hash && document.getElementById(hash)
+        ? document.getElementById(hash).closest('[data-spread-panel]')?.getAttribute('data-spread-panel')
+        : null;
+
+  activateTab(tabFromHash || 'overview', false);
+
+  if (hash && document.getElementById(hash)) {
+    window.setTimeout(() => document.getElementById(hash).scrollIntoView({ behavior: 'smooth', block: 'start' }), 120);
+  }
+})();