WIP: Fix Electron build issues and migrate to @nostr/tools

- Fix TypeScript compilation errors in platform services
- Add missing rotateCamera method and isNativeApp property
- Fix index.html path resolution for packaged Electron apps
- Create separate Vite config for Electron renderer process
- Migrate from nostr-tools to @nostr/tools via JSR for ESM compatibility
- Update all Vite configs to handle mixed npm/JSR package management
- Add comprehensive documentation in BUILDING.md
- Fix preload script path resolution in packaged builds

Resolves build failures with deep imports and missing UI in AppImage.

src/test/index.ts

@@ -4,6 +4,7 @@ import * as databaseUtil from "../db/databaseUtil";
 import { SERVICE_ID } from "../libs/endorserServer";
 import { deriveAddress, newIdentifier } from "../libs/crypto";
 import { logger } from "../utils/logger";
+import { AppString } from "../constants/app";
 /**
  * Get User #0 to sign & submit a RegisterAction for the user's activeDid.
  */