chore: remove unused React components, hooks, and utilities

[zinodict121]

Description

This PR addresses the technical debt by removing unused React components, custom hooks, utility functions, and their associated test files.

By running programmatic dead-code analysis across the src/ directory, we were able to safely eliminate orphaned code, reducing the bundle footprint, improving maintainability, and cleaning up the component tree.

Fixes #183

Changes Made

• Components: Removed obsolete components in src/components/ that were no longer referenced (e.g., VirtualList.tsx, AssetHeatmapLayer.tsx, DashboardPage.tsx).
• Hooks: Cleaned up unused hooks from src/hooks/ (e.g., useMapCameraSync.ts, useOfflineSync.ts).
• Utilities: Deleted unreferenced utility functions in src/utils/ and services in src/services/ that had become dead code.
• Tests: Removed all corresponding unit and e2e test files associated with the deleted code to prevent test suite failures and eliminate unnecessary maintenance.

Total files removed: 147 (99 source files + 48 test files)

Type of change

• 🧹 Chore (code cleanup and dead-code removal)
• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)

Verification

• Verified that npm run test passes (excluding pre-existing baseline failures).
• Ensured that no active code or imports were broken.
• Code compiles without module resolution errors.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings
• I have removed corresponding test files for the deleted code