Initial commit: Coastal Timesheet App with comprehensive features

- Employee name validation for all submissions
- Complete entry validation (all fields required when any field has input)
- Dynamic auto-resizing work description fields
- Optimized field layout (Homeowner → Hours → Work Description)
- Professional PDF generation with validation
- Email/share functionality with validation
- Data import/export capabilities
- Dark/light theme support
- Mobile-responsive design
- Local data persistence
- Multiple entries per day support
- Custom homeowner management
- Comprehensive README with deployment instructions
- Production build ready for web hosting

Dockerfile.dev

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+# Development Dockerfile
+FROM node:18-alpine
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install all dependencies (including dev dependencies)
+RUN npm install
+
+# Copy source code
+COPY . .
+
+# Expose development port
+EXPOSE 5173
+
+# Start development server
+CMD ["npm", "run", "dev", "--", "--host", "0.0.0.0"]