Optimize: Reduce dependencies to minimal set for headless RFID client

REMOVED:
- aiohttp, multidict, aiosignal, frozenlist, attrs, yarl, propcache (Flask async dependencies)
- flask, chart (not needed for headless device)
- selenium (web automation not needed)

KEPT (7 core dependencies only):
- rdm6300: RFID reader library
- requests: HTTP communication to server
- gpiozero: GPIO/system access
- urllib3, certifi, charset_normalizer, idna: requests dependencies

IMPROVEMENTS:
- Skip trying to install wrong-architecture wheels (aarch64)
- Let pip download correct ARM32/ARM64 version for device
- Much faster startup on resource-constrained Raspberry Pi
- Pure Python wheels installed from local repository
- Removes 11+ unnecessary packages

config_settings.py

@@ -128,24 +128,16 @@ CONFIG_CARD_ID = 12886709  # Card used for configuration
 # DEPENDENCIES
 # ============================================================================
 
-# Required Python packages and their wheel files
+# Required Python packages - MINIMAL for headless RFID client
+# Flask and aiohttp dependencies removed since we're now a headless collector
 REQUIRED_PACKAGES = {
-    'rdm6300': 'rdm6300-0.1.1-py3-none-any.whl',
+    'rdm6300': 'rdm6300-0.1.1-py3-none-any.whl',        # RFID reader library
-    'gpiozero': None,  # System package
+    'requests': 'requests-2.32.3-py3-none-any.whl',     # HTTP requests to server
-    'requests': 'requests-2.32.3-py3-none-any.whl',
+    'gpiozero': None,                                    # GPIO/system interaction (apt package)
-    'aiohttp': 'aiohttp-3.11.18-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
+    'urllib3': 'urllib3-2.3.0-py3-none-any.whl',        # Requests dependency
-    'flask': None,  # Will try pip install if needed
+    'certifi': 'certifi-2025.1.31-py3-none-any.whl',    # SSL certificates
-    'urllib3': 'urllib3-2.3.0-py3-none-any.whl',
+    'charset_normalizer': 'charset_normalizer-3.4.1-py3-none-any.whl',  # Requests dependency
-    'certifi': 'certifi-2025.1.31-py3-none-any.whl',
+    'idna': 'idna-3.10-py3-none-any.whl'                # Requests dependency
-    'charset_normalizer': 'charset_normalizer-3.4.1-py3-none-any.whl',
-    'idna': 'idna-3.10-py3-none-any.whl',
-    'multidict': 'multidict-6.4.3-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
-    'aiosignal': 'aiosignal-1.3.2-py2.py3-none-any.whl',
-    'frozenlist': 'frozenlist-1.6.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
-    'attrs': 'attrs-25.3.0-py3-none-any.whl',
-    'yarl': 'yarl-1.20.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
-    'aiohappyeyeballs': 'aiohappyeyeballs-2.6.1-py3-none-any.whl',
-    'propcache': 'propcache-0.3.1-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl'
 }
 
 REPOSITORY_PATH = FILES_DIR / "reposytory"

dependencies_module.py

@@ -59,7 +59,7 @@ def check_and_install_dependencies():
         
         for package_name, wheel_file in missing_packages:
             if wheel_file is None:
-                # Try to install via pip from internet or system packages
+                # Try to install via pip from internet (for system packages)
                 try:
                     print(f"Attempting to install {package_name} via pip...")
                     result = subprocess.run([
@@ -70,10 +70,10 @@ def check_and_install_dependencies():
                     if result.returncode == 0:
                         print(f"✓ {package_name} installed via pip")
                     else:
-                        print(f"✗ Could not install {package_name} via pip: {result.stderr}")
+                        print(f"⚠ pip install failed, trying apt...")
-                        if package_name in ['flask', 'gpiozero']:
+                        if package_name in ['gpiozero']:
                             try:
-                                print(f"Trying to install {package_name} via apt...")
+                                print(f"Attempting to install {package_name} via apt...")
                                 result = subprocess.run([
                                     'sudo', 'apt', 'install', '-y', f'python3-{package_name}',
                                     '--no-install-recommends'
@@ -88,9 +88,26 @@ def check_and_install_dependencies():
                 except Exception as pip_e:
                     print(f"✗ pip install failed: {pip_e}")
             else:
-                # Try to install from wheel file
+                # Try to install from wheel file (pure Python wheels like rdm6300, certifi, etc.)
                 wheel_path = f"{repository_path}/{wheel_file}"
+                # Only try wheel files that are pure Python (not architecture-specific)
+                if not ('aarch64' in wheel_file or 'armv' in wheel_file):
                     install_package_from_wheel(wheel_path, package_name)
+                else:
+                    # For architecture-specific wheels, try pip to get the right arch
+                    print(f"Skipping wheel {package_name} (wrong architecture), trying pip...")
+                    try:
+                        result = subprocess.run([
+                            sys.executable, "-m", "pip", "install", package_name,
+                            "--break-system-packages", "--no-warn-script-location"
+                        ], capture_output=True, text=True, timeout=120)
+                        
+                        if result.returncode == 0:
+                            print(f"✓ {package_name} installed via pip")
+                        else:
+                            print(f"✗ Could not install {package_name}: {result.stderr}")
+                    except Exception as e:
+                        print(f"✗ Error installing {package_name}: {e}")
 
 
 def verify_dependencies():