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/nn.json

@@ -0,0 +1,44 @@
+{
+  "Commands:": "Kommandoar:",
+  "Options:": "Alternativ:",
+  "Examples:": "Døme:",
+  "boolean": "boolsk",
+  "count": "mengd",
+  "string": "streng",
+  "number": "nummer",
+  "array": "matrise",
+  "required": "obligatorisk",
+  "default": "standard",
+  "default:": "standard:",
+  "choices:": "val:",
+  "generated-value": "generert-verdi",
+  "Not enough non-option arguments: got %s, need at least %s": {
+    "one": "Ikkje nok ikkje-alternativ argument: fekk %s, treng minst %s",
+    "other": "Ikkje nok ikkje-alternativ argument: fekk %s, treng minst %s"
+  },
+  "Too many non-option arguments: got %s, maximum of %s": {
+    "one": "For mange ikkje-alternativ argument: fekk %s, maksimum %s",
+    "other": "For mange ikkje-alternativ argument: fekk %s, maksimum %s"
+  },
+  "Missing argument value: %s": {
+    "one": "Manglar argumentverdi: %s",
+    "other": "Manglar argumentverdiar: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Manglar obligatorisk argument: %s",
+    "other": "Manglar obligatoriske argument: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Ukjent argument: %s",
+    "other": "Ukjende argument: %s"
+  },
+  "Invalid values:": "Ugyldige verdiar:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Gjeve: %s, Val: %s",
+  "Argument check failed: %s": "Argumentsjekk mislukkast: %s",
+  "Implications failed:": "Konsekvensane mislukkast:",
+  "Not enough arguments following: %s": "Ikkje nok fylgjande argument: %s",
+  "Invalid JSON config file: %s": "Ugyldig JSON konfigurasjonsfil: %s",
+  "Path to JSON config file": "Bane til JSON konfigurasjonsfil",
+  "Show help": "Vis hjelp",
+  "Show version number": "Vis versjonsnummer"
+}