feat: Add persistent settings and multiple layouts support

- Add settings manager to persist symbol, timeframe, and layouts
- Support multiple layouts for comprehensive chart analysis
- Remove debug screenshots for cleaner logs
- Update AI analysis with professional trading prompt
- Add multi-screenshot analysis for better trading insights
- Update analyze API to use saved settings and multiple layouts

Dockerfile

@@ -0,0 +1,51 @@
+# Dockerfile for Next.js 15 + Puppeteer/Chromium + Prisma + Tailwind + OpenAI
+FROM node:20-slim
+
+# Install system dependencies for Chromium
+RUN apt-get update && apt-get install -y \
+    wget \
+    ca-certificates \
+    fonts-liberation \
+    libappindicator3-1 \
+    libasound2 \
+    libatk-bridge2.0-0 \
+    libatk1.0-0 \
+    libcups2 \
+    libdbus-1-3 \
+    libdrm2 \
+    libgbm1 \
+    libnspr4 \
+    libnss3 \
+    libx11-xcb1 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxrandr2 \
+    xdg-utils \
+    --no-install-recommends && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install Chromium (Debian 12+ uses 'chromium' instead of 'chromium-browser')
+RUN apt-get update && apt-get install -y \
+    chromium \
+    --no-install-recommends && \
+    rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files and install dependencies
+COPY package.json package-lock.json* pnpm-lock.yaml* yarn.lock* .npmrc* ./
+RUN npm install
+
+# Copy the rest of the app
+COPY . .
+
+# Expose port
+EXPOSE 3000
+
+# Set environment variables for Puppeteer
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
+
+# Start the app
+CMD ["npm", "run", "dev"]