Add NIP-46 bunker service for remote signing with CAT support (v0.44.0)

- Add bunker-service.js: NIP-46 signer that handles signing requests from remote clients
- Add cashu-client.js: Cashu token minting for bunker authorization
- Update BunkerView.svelte: Add Start/Stop service toggle, CAT token generation, status indicator
- Update App.svelte: Pass userPrivkey to BunkerView for signing
- Add @noble/curves and @noble/hashes dependencies
- Include CAT token in bunker URL format: bunker://<pubkey>?relay=...&secret=...&cat=...
- Improve PWA manifest with maskable icons

Files modified:
- app/web/src/bunker-service.js: NEW - NIP-46 signer implementation
- app/web/src/cashu-client.js: NEW - Cashu token minting client
- app/web/src/BunkerView.svelte: Add service controls and CAT integration
- app/web/src/App.svelte: Add userPrivkey state and prop
- app/web/package.json: Add noble crypto dependencies
- app/web/public/manifest.json: Add maskable icon variants
- pkg/version/version: Bump to v0.44.0

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

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

app/web/public/manifest.json

@@ -1,22 +1,39 @@
 {
+  "id": "/",
   "name": "ORLY Nostr Relay",
   "short_name": "ORLY",
   "description": "High-performance Nostr relay",
   "display": "standalone",
+  "orientation": "any",
   "start_url": "/",
   "scope": "/",
   "theme_color": "#000000",
   "background_color": "#000000",
+  "categories": ["utilities", "social"],
   "icons": [
     {
       "src": "/icon-192.png",
       "sizes": "192x192",
-      "type": "image/png"
+      "type": "image/png",
+      "purpose": "any"
     },
     {
       "src": "/icon-512.png",
       "sizes": "512x512",
-      "type": "image/png"
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
     }
   ]
 }