fix(os): parse /etc/os-release line-by-line instead of regex

- pct exec returns stdout differently than local cat
- Line-by-line parsing is more robust across LXC boundaries
- Handles quotes correctly

full_updater/backend/scanner.py

@@ -140,41 +140,36 @@ def scan_os(target: Target) -> str:
     """Récupère le nom, la version complète et le codename de l'OS."""
     prefix = [] if target.is_host else ["pct", "exec", target.target_id, "--"]
 
-    # 1. Lire /etc/os-release
+    # 1. Lire /etc/os-release et parser ligne par ligne
     ok, osrel_out, _ = run_cmd(prefix + ["cat", "/etc/os-release"], timeout=30)
-    version_id = ""
-    pretty_name = ""
-    codename = ""
+    os_data = {}
     if ok:
-        # Priorité 1 : DEBIAN_VERSION_FULL (ex: 13.4)
-        ver_full_match = re.search(r'DEBIAN_VERSION_FULL="?([^"\n]+)"?', osrel_out)
-        if ver_full_match:
-            version_id = ver_full_match.group(1).strip()
-        # Priorité 2 : VERSION (ex: "13 (trixie)")
-        if not version_id:
-            ver_match = re.search(r'VERSION="([^"]+)"', osrel_out)
-            if ver_match:
-                version_id = ver_match.group(1).strip()
-        # Priorité 3 : VERSION_ID (ex: "13")
-        if not version_id:
-            ver_match = re.search(r'VERSION_ID="([^"]+)"', osrel_out)
-            if ver_match:
-                version_id = ver_match.group(1).strip()
-        # Nom affichable
-        pretty_match = re.search(r'PRETTY_NAME="([^"]+)"', osrel_out)
-        if pretty_match:
-            pretty_name = pretty_match.group(1).strip()
-        # Codename
-        code_match = re.search(r'VERSION_CODENAME="?([^"\n]+)"?', osrel_out)
-        if code_match:
-            codename = code_match.group(1).strip()
+        for line in osrel_out.splitlines():
+            line = line.strip()
+            if "=" in line:
+                key, val = line.split("=", 1)
+                # Supprimer les guillemets
+                val = val.strip().strip('"').strip("'")
+                os_data[key] = val
 
-    # 2. Fallback sur /etc/debian_version si tout vide
+    # 2. Extraire les champs
+    version_id = os_data.get("DEBIAN_VERSION_FULL", "")
+    if not version_id:
+        version_id = os_data.get("VERSION", "")
+    if not version_id:
+        version_id = os_data.get("VERSION_ID", "")
+
+    codename = os_data.get("VERSION_CODENAME", "")
+    pretty_name = os_data.get("PRETTY_NAME", "")
+    os_name = os_data.get("NAME", "")
+
+    # 3. Fallback sur /etc/debian_version si tout vide
     if not version_id:
         ok, ver_out, _ = run_cmd(prefix + ["cat", "/etc/debian_version"], timeout=30)
         version_id = ver_out.strip() if ok else ""
 
-    # 3. Récupérer le nom via lsb_release
+    # 4. Fallback sur lsb_release pour le nom
+    if not os_name:
         ok, name_out, _ = run_cmd(prefix + ["lsb_release", "-is"], timeout=30)
         os_name = name_out.strip() if ok else ""