rewrite inference and file loading to cython

Step 1: can compile

Azaion.AI/hardware_service.pyx

@@ -0,0 +1,73 @@
+# cython: language_level=3
+import base64
+import subprocess
+from hashlib import sha384
+
+cdef class HardwareInfo:
+    cdef str cpu
+    cdef str gpu
+    cdef str memory
+    cdef str mac_address
+    cdef str hash
+
+    def __init__(self, str cpu, str gpu, str memory, str mac_address, str hw_hash):
+        self.cpu = cpu
+        self.gpu = gpu
+        self.memory = memory
+        self.mac_address = mac_address
+        self.hash = hw_hash
+
+    def __str__(self):
+        return f'CPU: {self.cpu}. GPU: {self.gpu}. Memory: {self.memory}. MAC Address: {self.mac_address}'
+
+cdef class HardwareService:
+    """Handles hardware information retrieval and hash generation."""
+
+    def __init__(self):
+        try:
+            if subprocess.check_output("ver", shell=True).decode('utf-8').startswith("Microsoft"):
+                self.is_windows = True
+            else:
+                self.is_windows = False
+        except Exception:
+            self.is_windows = False
+
+    cdef HardwareInfo get_hardware_info(self):
+        if self.is_windows:
+            os_command = (
+                "wmic CPU get Name /Value && "
+                "wmic path Win32_VideoController get Name /Value && "
+                "wmic OS get TotalVisibleMemorySize /Value"
+            )
+        else:
+            os_command = (
+                "/bin/bash -c \" lscpu | grep 'Model name:' | cut -d':' -f2 && "
+                "lspci | grep VGA | cut -d':' -f3 && "
+                "free -g | grep Mem: | awk '{print $2}' && \""
+            )
+        # in case of subprocess error do:
+        # cdef bytes os_command_bytes = os_command.encode('utf-8')
+        # and use os_command_bytes
+        result = subprocess.check_output(os_command, shell=True).decode('utf-8')
+        lines = [line.strip() for line in result.splitlines() if line.strip()]
+
+        cdef str cpu = lines[0].replace("Name=", "").replace("  ", " ")
+        cdef str gpu = lines[1].replace("Name=", "").replace("  ", " ")
+        cdef str memory = lines[2].replace("TotalVisibleMemorySize=", "").replace("  ", " ")
+
+        # Get MAC address
+        if self.is_windows:
+            mac_cmd = "getmac"
+        else:
+            mac_cmd = "cat /sys/class/net/*/address"
+        cdef str mac_address = subprocess.check_output(mac_cmd, shell=True, text=True).splitlines()[0].strip()
+
+        cdef str full_hw_str = f'Azaion_{mac_address}_{cpu}_{gpu}'
+        hw_hash = self.calc_hash(full_hw_str)
+        return HardwareInfo(cpu, gpu, memory, mac_address, hw_hash)
+
+    cdef str calc_hash(self, str s):
+        str_bytes = s.encode('utf-8')
+        hash_bytes = sha384(str_bytes).digest()
+        cdef str h = base64.b64encode(hash_bytes).decode('utf-8')
+        return h