[30388f42] Infrastructure Hardening: Repaired CE/Connector DB schema, fixed frontend styling build, implemented robust echo shield in worker v2.1.1, and integrated Lead Engine into gateway.

company-explorer/Dockerfile

@@ -3,13 +3,20 @@
 # It creates a dedicated 'frontend' directory inside the container to avoid potential
 # file conflicts in the root directory.
 FROM node:20-slim AS frontend-builder
-WORKDIR /app
-# Copy the entire frontend project into a 'frontend' subdirectory
-COPY frontend ./frontend
-# Set the working directory to the new subdirectory
 WORKDIR /app/frontend
-# Install dependencies and build the project from within its own directory
-RUN npm install --no-audit --no-fund
+
+# 1. Copy ONLY package files first (better caching, no host node_modules contamination)
+COPY frontend/package.json ./
+
+# 2. Clean install dependencies
+# We ignore the local package-lock.json to force a resolution compatible with the container environment
+RUN npm install --no-audit --no-fund && \
+    npx update-browserslist-db@latest
+
+# 3. Copy source code AFTER install
+COPY frontend/ ./
+
+# 4. Build
 RUN npm run build
 
 # --- STAGE 2: Backend Builder ---