feat(header): add UtilityBar + Marquee + Navigation from v6-nav

- UtilityBar.astro (v6-utility): phone, clock, date, email from site settings
  Clock updated by fxClock() in src/lib/fx-animations.ts
- Marquee.astro (v6-marquee): log ticker with 4 entries (animated horizontally)
  Content duplicated for seamless loop
- Navigation.astro (v6-nav): REPLACED legacy. Adds 'บริการ' dropdown
  (4 services) + 'บทความ' link per plan round 2. Click-to-toggle on mobile.
- src/data/nav.ts: single source of truth for mainLinks + servicesDropdown
- fx-system.css: +27 lines for dropdown styles + active link underline
  (v6-nav originally had no dropdown — we added per spec)

Refs: .hermes/plans/2026-06-13_124000-moreminimore-v7-5-migration.md Task 2.1-2.4

src/data/nav.ts

@@ -0,0 +1,43 @@
+/**
+ * MOREMINIMORE - Nav data (single source of truth)
+ * Used by Navigation.astro and Footer.astro
+ *
+ * Per plan 2026-06-13 round 2:
+ * - Main menu: 7 items including 'บทความ' (blog) + 'FAQ' + 'ติดต่อ'
+ * - Services dropdown: 4 services (matched to content collection slugs)
+ * - Social: facebook, line, linkedin (from settings collection at runtime)
+ *
+ * Slugs match src/content/services/*-new.mdx:
+ *   - ai-consult-new → /services/ai-consult
+ *   - marketing-new → /services/marketing
+ *   - automation-new → /services/automation
+ *   - webdev-new → /services/webdev
+ *
+ * Href uses /services/{slug-without-new} to match the [slug].astro route.
+ */
+export const mainLinks = [
+  { label: 'หน้าแรก', href: '/' },
+  { label: 'บริการ', href: '/services', hasDropdown: true },
+  { label: 'ผลงาน', href: '/portfolio' },
+  { label: 'บทความ', href: '/blog' },
+  { label: 'เกี่ยวกับ', href: '/about' },
+  { label: 'FAQ', href: '/faq' },
+  { label: 'ติดต่อ', href: '/contact' },
+];
+
+export const servicesDropdown = [
+  { label: 'AI Consult', href: '/services/ai-consult' },
+  { label: 'Marketing Automation', href: '/services/marketing' },
+  { label: 'AI Automation', href: '/services/automation' },
+  { label: 'Website Development', href: '/services/webdev' },
+];
+
+/**
+ * Social links are passed as props to the component
+ * (because they come from the settings collection which is loaded async)
+ */
+export interface SocialLinks {
+  facebook?: string;
+  line?: string;
+  linkedin?: string;
+}