Refactor Dockerfile and update models and frontend components

- Removed the APP_VERSION argument from the Dockerfile and added TARGETARCH for architecture-specific wkhtmltopdf installation.
- Updated models.py to reintroduce the import of PartCountry for consistency.
- Enhanced parts.ts interface by adding new optional fields: immex_type, disable_movements, pga_program_code, non_discharge_clients, bom_items, and countries.
- Changed formType default in partForm.svelte and edit page to 'fa' for better alignment with the intended functionality.
- Improved type handling for non_discharge_clients in partForm.svelte.
- Adjusted column span logic in partForm.svelte for better rendering.
- Fixed image error handling in partForm.svelte for improved user experience.
- Updated license expiration date calculation in init_first_time.sh for compatibility with macOS.

backend/Dockerfile

@@ -2,12 +2,6 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-# ========================================
-# ARG para recibir la versión desde CI/CD
-# ========================================
-ARG APP_VERSION="dev"
-ENV APP_VERSION=${APP_VERSION}
-
 # Instalar dependencias del sistema
 RUN apt-get update && apt-get install -y \
     gcc \
@@ -32,7 +26,9 @@ RUN apt-get update \
     && rm -rf /var/lib/apt/lists/*
 
 # Instalar wkhtmltopdf binario oficial con soporte para footers/headers
-RUN curl -k -L -o /tmp/wkhtmltox.deb https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-3/wkhtmltox_0.12.6.1-3.bookworm_amd64.deb \
+# TARGETARCH permite amd64 y arm64 (Apple Silicon)
+ARG TARGETARCH
+RUN curl -k -L -o /tmp/wkhtmltox.deb "https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-3/wkhtmltox_0.12.6.1-3.bookworm_${TARGETARCH}.deb" \
     && apt-get update \
     && apt-get install -y /tmp/wkhtmltox.deb \
     && rm /tmp/wkhtmltox.deb \