feat: enhance TradingView authentication debugging

- Add comprehensive debug logging to checkLoginStatus Strategy 1
- Enhanced authentication variable detection with detailed console output
- Added debug logging for window.is_authenticated and window.user checks
- Improved error visibility for authentication detection issues
- Added health API endpoint for debugging and monitoring
- Enhanced Dockerfile with better caching and debugging capabilities

Authentication detection now shows detailed logs when checking:
- window.is_authenticated variable presence and value
- window.user object detection and structure
- Helps identify why auth detection sees user data but doesn't return true

Dockerfile

@@ -1,4 +1,4 @@
-# Dockerfile for Next.js 15 + Playwright + Puppeteer/Chromium + Prisma + Tailwind + OpenAI
+# Dockerfile for Next.js 15 + Puppeteer/Chromium + Prisma + Tailwind + OpenAI
 FROM node:20-slim
 
 # Use build arguments for CPU optimization
@@ -10,7 +10,7 @@ ENV JOBS=${JOBS}
 ENV NODE_OPTIONS=${NODE_OPTIONS}
 ENV npm_config_jobs=${JOBS}
 
-# Install system dependencies for Chromium and Playwright
+# Install system dependencies for Chromium
 RUN apt-get update && apt-get install -y \
     wget \
     ca-certificates \
@@ -59,9 +59,6 @@ RUN npm config set maxsockets 8 && \
     npm config set fetch-retries 3 && \
     npm ci --no-audit --no-fund --prefer-offline
 
-# Install Playwright browsers and dependencies with parallel downloads
-RUN npx playwright install --with-deps chromium
-
 # Copy the rest of the app
 COPY . .