Remove bunker (NIP-46) functionality from web UI (v0.44.7)

- Delete BunkerView.svelte component and all bunker UI
- Remove bunker-service.js and bunker-worker.js implementations
- Clean up bunker stores and worker management from stores.js
- Remove getBunkerURL and getBunkerInfo API functions
- Remove bunker tab from navigation and App.svelte imports
- Simplify rollup.config.js by removing bunker-worker build
- Remove NIP46 token scope from cashu-client.js

Files modified:
- app/web/src/BunkerView.svelte: Deleted
- app/web/src/bunker-service.js: Deleted
- app/web/src/bunker-worker.js: Deleted
- app/web/src/stores.js: Removed bunker state and worker functions
- app/web/src/api.js: Removed bunker API functions
- app/web/src/App.svelte: Removed bunker tab and imports
- app/web/rollup.config.js: Simplified to single bundle
- app/web/src/cashu-client.js: Removed NIP46 scope
- pkg/version/version: Bumped to v0.44.7

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/web/rollup.config.js

@@ -34,8 +34,7 @@ function serve() {
   };
 }
 
-// Main app bundle
-const mainConfig = {
+export default {
   input: "src/main.js",
   output: {
     sourcemap: true,
@@ -96,23 +95,3 @@ const mainConfig = {
     clearScreen: false,
   },
 };
-
-// Bunker worker bundle (runs in Web Worker context)
-const workerConfig = {
-  input: "src/bunker-worker.js",
-  output: {
-    sourcemap: true,
-    format: "iife",
-    name: "bunkerWorker",
-    file: `${outputDir}/bunker-worker.js`,
-  },
-  plugins: [
-    resolve({
-      browser: true,
-    }),
-    commonjs(),
-    production && terser(),
-  ],
-};
-
-export default [mainConfig, workerConfig];