refactor: simplify to independent multi-project structure

Removed npm workspace configuration in favor of simple multi-project repository.
Each project (web-app, housekeeping) is now completely self-contained.

## Changes
- Removed root package.json and package-lock.json
- Added VS Code workspace file for better project organization
- Updated documentation to reflect independent project structure
- Each project manages its own dependencies without workspace linking

## Structure
- web-app/: Self-contained Next.js application
- housekeeping/: Self-contained DB maintenance scripts
- No workspace management or dependency sharing
- Monorepo is purely for Git organization

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

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

README.md

@@ -19,24 +19,24 @@ All the actions user `withUser` to fetch user ID, which is then used in all the
 
 # Monorepo Structure
 
-This project is organized as a monorepo with multiple workspaces:
+This repository contains multiple independent projects:
 
-- **web-app**: The main Next.js application for tracking utility bills
-- **housekeeping**: Database backup and maintenance scripts
+- **web-app/**: Next.js application for tracking utility bills
+- **housekeeping/**: Database backup and maintenance scripts
 
-## Working with Workspaces
+Each project is self-contained with its own dependencies and package.json.
 
-From the monorepo root:
+## Working with Projects
 
 ```bash
-# Run dev server
+# Web app
+cd web-app
+npm install
 npm run dev
 
-# Build the web app
-npm run build
-
-# Run database backup (standalone)
-npm run backup:standalone --workspace=housekeeping
+# Housekeeping scripts
+cd housekeeping
+./db-backup--standalone.sh
 ```
 
 # Database Backup & Restore