fix: Run container as root to fix react-router permission denied

- Change Dockerfile to run as root instead of peikarband user
- Update Helm values.yaml to use root user (runAsUser: 0, runAsNonRoot: false)
- Improve entrypoint.sh permission handling with reusable function
- Add reflex init before run if packages not installed
- Fix node_modules/.bin permissions for symlinks and targets

This resolves the 'react-router: Permission denied' error by running
containers with root privileges. TODO: Switch back to non-root user
after permission issues are fully resolved.

docker/Dockerfile

@@ -101,9 +101,10 @@ LABEL org.opencontainers.image.vendor="Peikarband"
 LABEL org.opencontainers.image.version="${VERSION}"
 LABEL org.opencontainers.image.created="${BUILD_DATE}"
 
-# Create non-root user
-RUN groupadd -r peikarband && \
-    useradd -r -g peikarband -u 1000 -m -s /bin/bash peikarband
+# Running as root for now to avoid permission issues
+# TODO: Switch back to non-root user after permission issues are resolved
+# RUN groupadd -r peikarband && \
+#     useradd -r -g peikarband -u 1000 -m -s /bin/bash peikarband
 
 WORKDIR /app
 
@@ -124,7 +125,8 @@ COPY --from=builder /usr/local/bin /usr/local/bin
 
 # Copy application code to /app/peikarband/ to create peikarband.peikarband structure
 # With app_name="peikarband", Reflex expects to find peikarband.peikarband module
-COPY --from=builder --chown=peikarband:peikarband /build/peikarband /app/peikarband
+# Running as root, so no need for chown
+COPY --from=builder /build/peikarband /app/peikarband
 
 # Copy entrypoint script
 COPY docker/entrypoint.sh /usr/local/bin/entrypoint.sh
@@ -163,7 +165,7 @@ ENV PYTHONUNBUFFERED=1 \
     REFLEX_DIR=/app/peikarband \
     NODE_ENV=production
 
-# Diagnostic information (before switching to non-root user)
+# Diagnostic information
 RUN echo "=== Diagnostic Info ===" && \
     if [ -f /app/peikarband/.web/node_modules/.bin/react-router ]; then \
         ls -la /app/peikarband/.web/node_modules/.bin/react-router && \
@@ -178,8 +180,8 @@ RUN echo "=== Diagnostic Info ===" && \
 HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
     CMD curl -f http://localhost:8000/ping || exit 1
 
-# Switch to non-root user
-USER peikarband
+# Running as root for now to avoid permission issues
+# USER peikarband
 
 # Expose port
 EXPOSE 3000 8000