Release v1.1.5 - Remove debug and signing logs

- Disable debug() logging function in background scripts
- Remove backgroundLogNip07Action calls for NIP-07 operations
- Remove backgroundLogPermissionStored calls for permission events
- Clean up unused imports and result variables
- Simplify switch statement returns in processNip07Request

Files modified:
- package.json (version bump)
- projects/chrome/src/background-common.ts
- projects/chrome/src/background.ts
- projects/firefox/src/background-common.ts
- projects/firefox/src/background.ts

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

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

projects/chrome/public/manifest.json

@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "name": "Plebeian Signer - Nostr Identity Manager & Signer",
   "description": "Manage and switch between multiple identities while interacting with Nostr apps",
-  "version": "1.1.4",
+  "version": "1.1.5",
   "homepage_url": "https://github.com/PlebeianApp/plebeian-signer",
   "options_page": "options.html",
   "permissions": [