feat(machine): add markdown-driven support pages

Add support/help pages accessible via a ? button on the idle screen.
Pages are driven by .md files in /var/lib/lamassu-atm/support/ —
operators can customize content without rebuilding the app.

Features:
- Tabbed view with markdown rendering (via marked)
- Standalone URLs auto-render as QR codes (scannable from phone)
- Table URLs: click-to-reveal QR codes (prevents accidental scans)
- Yes/No rendered as green checkmarks / red X marks
- Wallet comparison table with download QR codes
- FAQ with Lightning-only clarification
- Support page with operator Nostr QR placeholder
- Custodial vs non-custodial footnote
- Large text for touchscreen accessibility
- Centered layout for short-content pages

Closes #36

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pnpm-lock.yaml

@@ -41,6 +41,9 @@ importers:
       '@scure/base':
         specifier: ^1.2.0
         version: 1.2.6
+      '@tanstack/vue-table':
+        specifier: ^8.21.3
+        version: 8.21.3(vue@3.5.27(typescript@5.9.3))
       '@vueuse/core':
         specifier: ^14.1.0
         version: 14.1.0(vue@3.5.27(typescript@5.9.3))
@@ -56,6 +59,9 @@ importers:
       lucide-vue-next:
         specifier: ^0.563.0
         version: 0.563.0(vue@3.5.27(typescript@5.9.3))
+      marked:
+        specifier: ^17.0.5
+        version: 17.0.5
       nostr-tools:
         specifier: ^2.10.0
         version: 2.19.4(typescript@5.9.3)
@@ -1370,9 +1376,19 @@ packages:
     peerDependencies:
       vite: ^5.2.0 || ^6 || ^7
 
+  '@tanstack/table-core@8.21.3':
+    resolution: {integrity: sha512-ldZXEhOBb8Is7xLs01fR3YEc3DERiz5silj8tnGkFZytt1abEvl/GhUmCE0PMLaMPTa3Jk4HbKmRlHmu+gCftg==}
+    engines: {node: '>=12'}
+
   '@tanstack/virtual-core@3.13.18':
     resolution: {integrity: sha512-Mx86Hqu1k39icq2Zusq+Ey2J6dDWTjDvEv43PJtRCoEYTLyfaPnxIQ6iy7YAOK0NV/qOEmZQ/uCufrppZxTgcg==}
 
+  '@tanstack/vue-table@8.21.3':
+    resolution: {integrity: sha512-rusRyd77c5tDPloPskctMyPLFEQUeBzxdQ+2Eow4F7gDPlPOB1UnnhzfpdvqZ8ZyX2rRNGmqNnQWm87OI2OQPw==}
+    engines: {node: '>=12'}
+    peerDependencies:
+      vue: '>=3.2'
+
   '@tanstack/vue-virtual@3.13.18':
     resolution: {integrity: sha512-6pT8HdHtTU5Z+t906cGdCroUNA5wHjFXsNss9gwk7QAr1VNZtz9IQCs2Nhx0gABK48c+OocHl2As+TMg8+Hy4A==}
     peerDependencies:
@@ -2518,6 +2534,11 @@ packages:
     resolution: {integrity: sha512-NgOPbRiaQM10DYXvN3/hhGVI2M5MtITFryzBGxHM5p4wnFxsVCbxkrBrDsk+EZ5OB4jEOT7AjDxtdF+KVEFT7w==}
     engines: {node: ^12.13.0 || ^14.15.0 || >=16.0.0}
 
+  marked@17.0.5:
+    resolution: {integrity: sha512-6hLvc0/JEbRjRgzI6wnT2P1XuM1/RrrDEX0kPt0N7jGm1133g6X7DlxFasUIx+72aKAr904GTxhSLDrd5DIlZg==}
+    engines: {node: '>= 20'}
+    hasBin: true
+
   matcher@3.0.0:
     resolution: {integrity: sha512-OkeDaAZ/bQCxeFAozM55PKcKU0yJMPGifLwV4Qgjitu+5MoAfSQN4lsLJeXZ1b8w0x+/Emda6MZgXS1jvsapng==}
     engines: {node: '>=10'}
@@ -4226,8 +4247,15 @@ snapshots:
       tailwindcss: 4.1.18
       vite: 6.4.1(@types/node@22.19.7)(jiti@2.6.1)(lightningcss@1.30.2)(tsx@4.21.0)
 
+  '@tanstack/table-core@8.21.3': {}
+
   '@tanstack/virtual-core@3.13.18': {}
 
+  '@tanstack/vue-table@8.21.3(vue@3.5.27(typescript@5.9.3))':
+    dependencies:
+      '@tanstack/table-core': 8.21.3
+      vue: 3.5.27(typescript@5.9.3)
+
   '@tanstack/vue-virtual@3.13.18(vue@3.5.27(typescript@5.9.3))':
     dependencies:
       '@tanstack/virtual-core': 3.13.18
@@ -5651,6 +5679,8 @@ snapshots:
       - bluebird
       - supports-color
 
+  marked@17.0.5: {}
+
   matcher@3.0.0:
     dependencies:
       escape-string-regexp: 4.0.0