fix(ci): add native NSIS installer compilation and libpython3 dev dependencies for Linux runner

compilation/installer_client.nsi

@@ -0,0 +1,42 @@
+!include "MUI2.nsh"
+
+Name "LOGAR Client"
+OutFile "..\dist\LOGAR-Client-Setup.exe"
+InstallDir "$PROGRAMFILES64\LOGAR"
+RequestExecutionLevel admin
+
+!insertmacro MUI_PAGE_WELCOME
+!insertmacro MUI_PAGE_DIRECTORY
+!insertmacro MUI_PAGE_INSTFILES
+!insertmacro MUI_PAGE_FINISH
+
+!insertmacro MUI_UNPAGE_CONFIRM
+!insertmacro MUI_UNPAGE_INSTFILES
+
+!insertmacro MUI_LANGUAGE "English"
+
+Section "Install"
+    SetOutPath "$INSTDIR"
+    File "..\dist\Win_Client.exe"
+    File "..\compilation\nssm.exe"
+
+    CreateDirectory "$COMMONAPPDATA\LOGAR"
+
+    # Install and configure service via NSSM
+    ExecWait '"$INSTDIR\nssm.exe" install LOGAR_Client "$INSTDIR\Win_Client.exe"'
+    ExecWait '"$INSTDIR\nssm.exe" set LOGAR_Client AppDirectory "$INSTDIR"'
+    ExecWait '"$INSTDIR\nssm.exe" set LOGAR_Client AppStdout "$COMMONAPPDATA\LOGAR\client.log"'
+    ExecWait '"$INSTDIR\nssm.exe" set LOGAR_Client AppStderr "$COMMONAPPDATA\LOGAR\client_err.log"'
+    ExecWait '"$INSTDIR\nssm.exe" start LOGAR_Client'
+
+    WriteUninstaller "$INSTDIR\uninstall.exe"
+SectionEnd
+
+Section "Uninstall"
+    ExecWait '"$INSTDIR\nssm.exe" stop LOGAR_Client'
+    ExecWait '"$INSTDIR\nssm.exe" remove LOGAR_Client confirm'
+    Delete "$INSTDIR\Win_Client.exe"
+    Delete "$INSTDIR\nssm.exe"
+    Delete "$INSTDIR\uninstall.exe"
+    RMDir "$INSTDIR"
+SectionEnd

compilation/installer_server.nsi

@@ -0,0 +1,42 @@
+!include "MUI2.nsh"
+
+Name "LOGAR Server"
+OutFile "..\dist\LOGAR-Server-Setup.exe"
+InstallDir "$PROGRAMFILES64\LOGAR-Server"
+RequestExecutionLevel admin
+
+!insertmacro MUI_PAGE_WELCOME
+!insertmacro MUI_PAGE_DIRECTORY
+!insertmacro MUI_PAGE_INSTFILES
+!insertmacro MUI_PAGE_FINISH
+
+!insertmacro MUI_UNPAGE_CONFIRM
+!insertmacro MUI_UNPAGE_INSTFILES
+
+!insertmacro MUI_LANGUAGE "English"
+
+Section "Install"
+    SetOutPath "$INSTDIR"
+    File "..\dist\Server.exe"
+    File "..\compilation\nssm.exe"
+
+    CreateDirectory "$COMMONAPPDATA\LOGAR-Server"
+
+    # Install and configure service via NSSM
+    ExecWait '"$INSTDIR\nssm.exe" install LOGAR_Server "$INSTDIR\Server.exe"'
+    ExecWait '"$INSTDIR\nssm.exe" set LOGAR_Server AppDirectory "$INSTDIR"'
+    ExecWait '"$INSTDIR\nssm.exe" set LOGAR_Server AppStdout "$COMMONAPPDATA\LOGAR-Server\server.log"'
+    ExecWait '"$INSTDIR\nssm.exe" set LOGAR_Server AppStderr "$COMMONAPPDATA\LOGAR-Server\server_err.log"'
+    ExecWait '"$INSTDIR\nssm.exe" start LOGAR_Server'
+
+    WriteUninstaller "$INSTDIR\uninstall.exe"
+SectionEnd
+
+Section "Uninstall"
+    ExecWait '"$INSTDIR\nssm.exe" stop LOGAR_Server'
+    ExecWait '"$INSTDIR\nssm.exe" remove LOGAR_Server confirm'
+    Delete "$INSTDIR\Server.exe"
+    Delete "$INSTDIR\nssm.exe"
+    Delete "$INSTDIR\uninstall.exe"
+    RMDir "$INSTDIR"
+SectionEnd

compilation/package_dist.py

@@ -136,6 +136,33 @@ def create_windows_exe_zipapp(script_name, exe_name):
     print(f"[+] Successfully cross-compiled Windows PE executable: {exe_name}.exe (PE Stub attached: {bool(stub_bytes)})")
 
 
+def compile_nsis_installers():
+    """Compiles NSIS installers if makensis is available (native Linux/Windows)."""
+    makensis_cmd = None
+    if shutil.which("makensis"):
+        makensis_cmd = ["makensis"]
+    elif os.path.exists(r"C:\Program Files (x86)\NSIS\makensis.exe"):
+        makensis_cmd = [r"C:\Program Files (x86)\NSIS\makensis.exe"]
+    elif os.path.exists(r"C:\Program Files\NSIS\makensis.exe"):
+        makensis_cmd = [r"C:\Program Files\NSIS\makensis.exe"]
+
+    if not makensis_cmd:
+        return False
+
+    success = True
+    for nsi in ["installer_client.nsi", "installer_server.nsi"]:
+        nsi_path = os.path.join(ROOT_DIR, "compilation", nsi)
+        if os.path.exists(nsi_path):
+            print(f"[*] Compiling NSIS script: {nsi} via {makensis_cmd[0]}...")
+            try:
+                subprocess.run(makensis_cmd + [nsi_path], check=True)
+                print(f"[+] Successfully compiled {nsi}")
+            except Exception as e:
+                print(f"[!] Warning: Failed to compile {nsi} with {makensis_cmd}: {e}")
+                success = False
+    return success
+
+
 def compile_inno_setup_installers():
     """Compiles Inno Setup installers if iscc or innosetup wrapper is available."""
     iscc_cmd = None
@@ -173,6 +200,11 @@ def compile_inno_setup_installers():
     return True
 
 
+def compile_windows_installers():
+    if not compile_nsis_installers():
+        compile_inno_setup_installers()
+
+
 def build_windows():
     print("[*] Compiling Windows standalone executables...")
     is_windows_host = platform.system() == "Windows"
@@ -192,7 +224,7 @@ def build_windows():
         create_windows_exe_zipapp("Win_Client.py", "Win_Client")
         create_windows_exe_zipapp("Server.py", "Server")
 
-    compile_inno_setup_installers()
+    compile_windows_installers()
 
     client_bin = os.path.join(DIST_DIR, "Win_Client.exe")
     server_bin = os.path.join(DIST_DIR, "Server.exe")