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.

BUILDING.md

@@ -81,6 +81,89 @@ Install dependencies:
    npm install
    ```
 
+## Package Management
+
+TimeSafari uses a mixed package management approach, combining npm and JSR (JavaScript Registry) for optimal dependency management.
+
+### JSR Integration
+
+Some packages are installed via JSR for better ESM support and modern TypeScript compatibility:
+
+```bash
+# Install JSR packages
+npx jsr add @nostr/tools
+```
+
+### Package Migration History
+
+#### nostr-tools → @nostr/tools
+
+**Date**: June 2025  
+**Reason**: Resolved Vite/Rollup build issues with deep imports
+
+**Before** (npm):
+```typescript
+import { finalizeEvent } from "nostr-tools/lib/cjs/index.js";
+import { accountFromExtendedKey } from "nostr-tools/lib/cjs/nip06.js";
+```
+
+**After** (JSR):
+```typescript
+import { finalizeEvent } from "@nostr/tools";
+import { accountFromExtendedKey } from "@nostr/tools/nip06";
+```
+
+**Benefits**:
+- ✅ Proper ESM support
+- ✅ No deep import issues with Vite/Rollup
+- ✅ Better TypeScript compatibility
+- ✅ Modern package structure
+
+### Current Package Strategy
+
+- **npm**: Primary package manager for most dependencies
+- **JSR**: Used for packages with better ESM support or modern alternatives
+- **Mixed approach**: Allows using the best package for each dependency
+
+### When to Use JSR
+
+Consider using JSR for:
+- Packages with ESM/CJS compatibility issues in npm
+- Modern TypeScript-first packages
+- Packages that work better with modern bundlers
+- New dependencies where JSR has a better alternative
+
+### Vite Configuration
+
+The build system is configured to handle both npm and JSR packages:
+
+```typescript
+// vite.config.common.mts
+resolve: {
+  alias: {
+    '@nostr/tools': path.resolve(__dirname, 'node_modules/@nostr/tools'),
+    '@nostr/tools/nip06': path.resolve(__dirname, 'node_modules/@nostr/tools/nip06'),
+  }
+}
+```
+
+### Troubleshooting Package Issues
+
+1. **Build failures with deep imports**
+   - Check if package has ESM/CJS compatibility issues
+   - Consider JSR alternative if available
+   - Update Vite configuration if needed
+
+2. **TypeScript errors**
+   - Ensure proper type definitions are available
+   - Check package exports in package.json
+   - Verify import paths match package structure
+
+3. **Mixed package manager issues**
+   - Keep package.json and node_modules in sync
+   - Use `npm install` after JSR package additions
+   - Check for conflicting package versions
+
 ## Web Development
 
 ### Local Development