fix: parse Disc qwinsta rows so RDG flap auto-logoff works (0.5.14)

Empty SESSIONNAME broke session matching; auto-disconnect failed with 'No matching Windows session'.

backend/app/services/host_sessions.py

@@ -409,28 +409,54 @@ def filter_windows_sessions_for_user(
     return [s for s in sessions if windows_user_matches_session(user, s.user)]
 
 
-def parse_qwinsta_sessions(stdout: str, *, filter_user: str | None = None) -> list[HostSessionRow]:
-    rows: list[HostSessionRow] = []
-    norm_filter = (filter_user or "").strip().lower()
+def _qwinsta_sam_account(value: str) -> str:
+    text = (value or "").strip()
+    if "\\" in text:
+        text = text.split("\\")[-1]
+    if "@" in text:
+        text = text.split("@")[0]
+    return text.casefold()
 
-    def norm_user(value: str) -> str:
-        return value.replace("B26\\", "").replace("b26\\", "").lower()
+
+def parse_qwinsta_sessions(stdout: str, *, filter_user: str | None = None) -> list[HostSessionRow]:
+    """Parse ``qwinsta`` output.
+
+    Disconnected sessions often have an empty SESSIONNAME column, so the line
+    becomes ``USERNAME  ID  STATE`` (3 tokens). Older parsing required 4 tokens
+    and skipped those rows — that broke RDG flap auto-logoff for Disc sessions.
+    """
+    rows: list[HostSessionRow] = []
+    filter_sam = _qwinsta_sam_account(filter_user or "")
+    skip_users = frozenset({"services"})
 
     for line in stdout.splitlines():
         text = line.strip()
         if not text or re.match(r"^SESSION", text, re.I) or text.startswith("---"):
             continue
         parts = text.split()
-        if len(parts) < 4:
+        id_idx: int | None = None
+        sid = 0
+        for i, part in enumerate(parts):
+            token = part.lstrip(">")
+            if token.isdigit():
+                id_idx = i
+                sid = int(token)
+                break
+        if id_idx is None or id_idx < 1:
             continue
-        session_name = parts[0].lstrip(">")
-        user_name = parts[1]
-        try:
-            sid = int(parts[2])
-        except ValueError:
+        state = " ".join(parts[id_idx + 1 :]) if id_idx + 1 < len(parts) else ""
+        if not state or state.casefold().startswith("listen"):
             continue
-        state = " ".join(parts[3:])
-        if norm_filter and norm_filter not in norm_user(user_name):
+        before = parts[:id_idx]
+        if len(before) == 1:
+            session_name = ""
+            user_name = before[0].lstrip(">")
+        else:
+            session_name = before[0].lstrip(">")
+            user_name = before[1]
+        if user_name.casefold() in skip_users:
+            continue
+        if filter_sam and filter_sam not in _qwinsta_sam_account(user_name):
             continue
         rows.append(
             HostSessionRow(
@@ -441,7 +467,7 @@ def parse_qwinsta_sessions(stdout: str, *, filter_user: str | None = None) -> li
             )
         )
 
-    if rows or not norm_filter:
+    if rows or not filter_sam:
         return rows
 
     return parse_qwinsta_sessions(stdout, filter_user=None)