Add desktop session detection to auto-boot-ollama-host script

Implement a new module for checking if the user is logged into a Windows desktop session. The script now skips Ollama startup and shutdown if the user is currently logged in, preventing interruptions. Update README to reflect new features and module structure.

scripts/ssh.lua

@@ -66,4 +66,64 @@ function ssh_module.execute(command, user, host, port, identity_file)
   end
 end
 
+-- Execute a remote command over SSH and return the output
+-- Signature: ssh.execute_with_output(command, user, host, port, identity_file)
+-- Returns: success, output, error_message
+function ssh_module.execute_with_output(command, user, host, port, identity_file)
+  -- Basic validation and defaults
+  user = tostring(user or "")
+  host = tostring(host or "")
+  port = tonumber(port or 22) or 22
+  identity_file = tostring(identity_file or "")
+
+  -- Build base ssh command (run locally)
+  local dest = (user ~= "" and (user .. "@" .. host) or host)
+  local pieces = {
+    "ssh",
+    "-p", tostring(port),
+    "-o", "BatchMode=yes",
+    "-o", "ConnectTimeout=30",
+    "-o", "ServerAliveInterval=5",
+    "-o", "ServerAliveCountMax=1",
+    "-o", "UserKnownHostsFile=/root/.ssh/known_hosts",
+    "-o", "StrictHostKeyChecking=yes",
+  }
+  
+  if identity_file ~= "" then
+    table.insert(pieces, "-i")
+    table.insert(pieces, identity_file)
+  end
+  table.insert(pieces, dest)
+
+  -- Pass remote command as provided
+  table.insert(pieces, "--")
+  table.insert(pieces, command)
+
+  -- Join with spaces for io.popen
+  local function join(args)
+    return table.concat(args, " ")
+  end
+
+  local full = join(pieces)
+  utils.log("SSH exec (with output): " .. full)
+  
+  -- Use io.popen to capture output
+  local fh = io.popen(full, "r")
+  if not fh then
+    return false, "", "Failed to open SSH command"
+  end
+  
+  local output = fh:read("*a")
+  local success, reason, code = fh:close()
+  
+  if success then
+    utils.log("SSH command completed successfully with output")
+    return true, output, nil
+  else
+    local msg = string.format("SSH failed: reason=%s code=%s", tostring(reason), tostring(code))
+    utils.log(msg)
+    return false, output, msg
+  end
+end
+
 return ssh_module