initial scaffold: vue 3 + vite 8 + shadcn-vue + tailwind 4

Wires pinia, vue-router, vue-i18n, vee-validate/zod, shadcn-vue
(reka-ui), tailwind 4 via @tailwindcss/vite. Sample HomeView
proves i18n + pinia + tailwind. Optional nostr/lnbits feature
folders ship as documentation only — deps install on opt-in.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,20 @@
+node_modules
+dist
+dist-ssr
+*.local
+.vite
+
+.DS_Store
+
+.vscode/*
+!.vscode/extensions.json
+.idea
+
+.env
+.env.local
+.env.*.local
+
+*.log
+pnpm-debug.log*
+
+.claude/