feat(security,ui): self-host React deps, Tailwind, fonts; strict CSP; local QR; better selection state

Replace CDN React/ReactDOM/Babel with local libs; remove Babel and inline scripts
Build Tailwind locally, add safelist; switch to assets/tailwind.css
Self-host Font Awesome and Inter (CSS + woff2); remove external font CDNs
Implement strict CSP (no unsafe-inline/eval; scripts/styles/fonts from self)
Extract inline handlers; move PWA scripts to external files
Add local QR code generation (qrcode lib) and remove api.qrserver.com
Improve SessionTypeSelector visual selection (highlighted background and ring)
Keep PWA working with service worker and offline assets
Refs: CSP hardening, offline-first, no external dependencies

node_modules/yargs/locales/nl.json

@@ -0,0 +1,49 @@
+{
+  "Commands:": "Commando's:",
+  "Options:": "Opties:",
+  "Examples:": "Voorbeelden:",
+  "boolean": "booleaans",
+  "count": "aantal",
+  "string": "string",
+  "number": "getal",
+  "array": "lijst",
+  "required": "verplicht",
+  "default": "standaard",
+  "default:": "standaard:",
+  "choices:": "keuzes:",
+  "aliases:": "aliassen:",
+  "generated-value": "gegenereerde waarde",
+  "Not enough non-option arguments: got %s, need at least %s": {
+    "one": "Niet genoeg niet-optie-argumenten: %s gekregen, minstens %s nodig",
+    "other": "Niet genoeg niet-optie-argumenten: %s gekregen, minstens %s nodig"
+  },
+  "Too many non-option arguments: got %s, maximum of %s": {
+    "one": "Te veel niet-optie-argumenten: %s gekregen, maximum is %s",
+    "other": "Te veel niet-optie-argumenten: %s gekregen, maximum is %s"
+  },
+  "Missing argument value: %s": {
+    "one": "Missende argumentwaarde: %s",
+    "other": "Missende argumentwaarden: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Missend verplicht argument: %s",
+    "other": "Missende verplichte argumenten: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Onbekend argument: %s",
+    "other": "Onbekende argumenten: %s"
+  },
+  "Invalid values:": "Ongeldige waarden:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Gegeven: %s, Keuzes: %s",
+  "Argument check failed: %s": "Argumentcontrole mislukt: %s",
+  "Implications failed:": "Ontbrekende afhankelijke argumenten:",
+  "Not enough arguments following: %s": "Niet genoeg argumenten na: %s",
+  "Invalid JSON config file: %s": "Ongeldig JSON-config-bestand: %s",
+  "Path to JSON config file": "Pad naar JSON-config-bestand",
+  "Show help": "Toon help",
+  "Show version number": "Toon versienummer",
+  "Did you mean %s?": "Bedoelde u misschien %s?",
+  "Arguments %s and %s are mutually exclusive": "Argumenten %s en %s kunnen niet tegelijk gebruikt worden",
+  "Positionals:": "Positie-afhankelijke argumenten",
+  "command": "commando"
+}