chore: Update Dockerfile to switch from npm ci to npm install for improved dependency management with caching

Dockerfile.fast

@@ -15,8 +15,8 @@ RUN npm config set registry https://registry.npmjs.org/ \
 # Copy package files first for better caching
 COPY frontend/package*.json ./
 
-# Clean install dependencies with lockfile for reproducible and cached builds
-RUN --mount=type=cache,target=/root/.npm npm ci --no-audit --no-fund
+# Install dependencies with cache (lockfile может отличаться после overrides/optional deps)
+RUN --mount=type=cache,target=/root/.npm npm install --no-audit --no-fund
 
 # Copy source code (only what's needed for build)
 COPY frontend/src/ ./src/