v1.8.5: restore sudo auto-password + fix sudo SFTP operations

Terminal:
- Auto-detect [sudo] password prompts in interactive shell output
- Auto-send server password when sudo prompt detected
- Reset detection flag on new command (Enter key)

SSH client (SFTPSession):
- Fix exec_command() sudo password timing (0.1s delay for prompt)
- Fix listdir_attr_sudo() ls output parsing with proper maxsplit
- Handle filenames with spaces, symlinks, and varied ls formats

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

gui/tabs/terminal_tab.py

@@ -37,6 +37,10 @@ class TerminalTab(ctk.CTkFrame):
         # Thread-safe data queue
         self._data_queue: queue.Queue[bytes] = queue.Queue()
 
+        # Sudo auto-password detection
+        self._sudo_buffer = b""   # Buffer for detecting sudo prompts
+        self._sudo_sent = False   # Prevent sending password twice for same prompt
+
     def set_server(self, alias: str | None):
         if alias == self._current_alias:
             return
@@ -151,7 +155,20 @@ class TerminalTab(ctk.CTkFrame):
         except queue.Empty:
             pass
         if chunks:
-            self._terminal.feed(b"".join(chunks))
+            combined = b"".join(chunks)
+            self._sudo_buffer += combined
+            # Keep only last 200 bytes for pattern matching
+            self._sudo_buffer = self._sudo_buffer[-200:]
+
+            if not self._sudo_sent:
+                buf_str = self._sudo_buffer.decode("utf-8", errors="replace").lower()
+                if "[sudo] password for" in buf_str or buf_str.rstrip().endswith("password:"):
+                    server = self.store.get_server(self._current_alias)
+                    if server and server.get("password"):
+                        self._session.send(server["password"].encode() + b"\n")
+                        self._sudo_sent = True
+
+            self._terminal.feed(combined)
 
     def _on_disconnected(self):
         """Called from SSH read thread."""
@@ -189,6 +206,9 @@ class TerminalTab(ctk.CTkFrame):
         session = self._session  # local ref for thread safety
         if session and session.connected:
             session.send(data)
+            # Reset sudo sent flag when user sends a new command (detects \r or \n)
+            if b'\r' in data or b'\n' in data:
+                self._sudo_sent = False
         elif self._current_alias and not self._intentional_disconnect and self._reconnect_count == 0:
             # Session dead, no reconnect in progress — trigger one attempt
             self._on_disconnected()