Performs a comprehensive project rename from 'barcode_scanner' to 'e_scan' (or 'eScan' for user-facing labels). This update spans all relevant files, including:
- Application IDs and bundle identifiers for Android, iOS, macOS, and Linux.
- VS Code launch configurations.
- Dart package import paths.
- Project names and titles in `pubspec.yaml`, `README.md`, and platform-specific configurations (e.g., CMakeLists, Info.plist, AndroidManifest).
Removes the dedicated `HomePage` and its associated model files.
Configures `ReceptionPage` as the new default landing page after successful login and product form submission. Updates navigation and state management dependencies to direct users to the primary operational interface upon entry.
