Rebrand application from 'Beach Litter Mapping Platform' to 'Litter Scouts'

- Updated app name in all source files, documentation, and configuration
- Changed package names in package.json files
- Updated header, titles, and user-facing text
- Modified email templates and notification text
- Updated steering rules and spec documents

Dockerfile.backend

@@ -0,0 +1,28 @@
+# Backend Dockerfile
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Copy package files
+COPY server/package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy prisma schema first for generation
+COPY server/prisma ./prisma
+
+# Generate Prisma client
+RUN npx prisma generate
+
+# Copy source code
+COPY server/ .
+
+# Build TypeScript
+RUN npm run build
+
+# Expose port
+EXPOSE 3000
+
+# Start the application
+CMD ["npm", "start"]