Release v1.0.9 - Add wallet tab with Cashu and Lightning support

- Add wallet tab with NWC (Nostr Wallet Connect) Lightning support
- Add Cashu ecash wallet with mint management, send/receive tokens
- Add Cashu deposit feature (mint via Lightning invoice)
- Add token viewer showing proof amounts and timestamps
- Add refresh button with auto-refresh for spent proof detection
- Add browser sync warning for Cashu users on welcome screen
- Add Cashu onboarding info panel with storage considerations
- Add settings page sync info note explaining how to change sync
- Add backups page for vault snapshot management
- Add About section to identity (You) page
- Fix lint accessibility issues in wallet component

Files modified:
- projects/common/src/lib/services/nwc/* (new)
- projects/common/src/lib/services/cashu/* (new)
- projects/common/src/lib/services/storage/* (extended)
- projects/chrome/src/app/components/home/wallet/*
- projects/firefox/src/app/components/home/wallet/*
- projects/chrome/src/app/components/welcome/*
- projects/firefox/src/app/components/welcome/*
- projects/chrome/src/app/components/home/settings/*
- projects/firefox/src/app/components/home/settings/*
- projects/chrome/src/app/components/home/identity/*
- projects/firefox/src/app/components/home/identity/*
- projects/chrome/src/app/components/home/backups/* (new)
- projects/firefox/src/app/components/home/backups/* (new)

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

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

projects/firefox/src/app/common/data/firefox-sync-yes-handler.ts

@@ -1,7 +1,9 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import {
   BrowserSyncData,
+  CashuMint_ENCRYPTED,
   Identity_ENCRYPTED,
+  NwcConnection_ENCRYPTED,
   Permission_ENCRYPTED,
   BrowserSyncHandler,
   Relay_ENCRYPTED,
@@ -50,6 +52,20 @@ export class FirefoxSyncYesHandler extends BrowserSyncHandler {
     this.setPartialData_Relays(data);
   }
 
+  async saveAndSetPartialData_NwcConnections(data: {
+    nwcConnections: NwcConnection_ENCRYPTED[];
+  }): Promise<void> {
+    await browser.storage.sync.set(data);
+    this.setPartialData_NwcConnections(data);
+  }
+
+  async saveAndSetPartialData_CashuMints(data: {
+    cashuMints: CashuMint_ENCRYPTED[];
+  }): Promise<void> {
+    await browser.storage.sync.set(data);
+    this.setPartialData_CashuMints(data);
+  }
+
   async clearData(): Promise<void> {
     await browser.storage.sync.clear();
   }