feat: offline_note sur partitions NTFS verrouillées

Distingue volume verrouillé (Windows hibernate/Fast Startup)
de ntfsresize absent. Champ offline_note dans le payload JSON.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

inventaire.py

@@ -428,24 +428,37 @@ def _ext4_space(dev):
         return None
 
 def _ntfs_space(dev):
-    # ntfsresize -i indique la taille minimale ≈ espace utilisé
-    out = run(["ntfsresize", "--info", "--force", dev])
-    if not out:
-        return None
+    try:
+        r = subprocess.run(
+            ["ntfsresize", "--info", "--force", dev],
+            capture_output=True, text=True, timeout=15,
+        )
+        combined = r.stdout + r.stderr
+        if r.returncode != 0:
+            locked_markers = ("hibernated", "fast restart", "Windows is", "hiberfil",
+                              "unclean", "Refusing to operate")
+            if any(m in combined for m in locked_markers):
+                note = "Volume NTFS verrouillé — Windows en veille ou Fast Startup actif"
+            else:
+                note = "Lecture NTFS impossible (ntfsresize indisponible ou erreur)"
+            dprint(f"NTFS {dev} : {note}")
+            return {"offline_note": note}
         total = used = None
-    for line in out.splitlines():
+        for line in combined.splitlines():
             if "Current volume size:" in line:
                 m = re.search(r"(\d+)\s+bytes", line)
-            if m:
-                total = int(m.group(1))
+                if m: total = int(m.group(1))
             if "You might resize at" in line:
                 m = re.search(r"(\d+)\s+bytes", line)
-            if m:
-                used = int(m.group(1))
+                if m: used = int(m.group(1))
         if total and used:
             return {"size_bytes": total, "used_bytes": used, "free_bytes": total - used,
                     "used_percent": int(used / total * 100) if total else 0}
-    return None
+        return {"offline_note": "Taille NTFS non déterminée"}
+    except FileNotFoundError:
+        return {"offline_note": "ntfsresize non installé — sudo apt install ntfs-3g"}
+    except Exception as e:
+        return {"offline_note": f"Erreur lecture NTFS : {e}"}
 
 def _btrfs_space(dev):
     out = run(["btrfs", "filesystem", "show", dev])
@@ -484,6 +497,7 @@ def build_partitions(children, df_map, lvm_map, home_done):
             "free_bytes": None, "free_human": None,
             "used_percent": None,
             "mountpoint": mountpoint,
+            "offline_note": None,
             "home_users": None,
             "lvm": None,
         }
@@ -504,6 +518,10 @@ def build_partitions(children, df_map, lvm_map, home_done):
             if fstype in ("ext2", "ext3", "ext4", "ntfs", "btrfs"):
                 space = get_offline_space(f"/dev/{name}", fstype)
                 if space:
+                    if "offline_note" in space:
+                        part["offline_note"] = space["offline_note"]
+                        dprint(f"  partition {name} : {space['offline_note']}")
+                    else:
                         part["used_bytes"]   = space["used_bytes"]
                         part["used_human"]   = bytes_human(space["used_bytes"])
                         part["free_bytes"]   = space["free_bytes"]