fix(codeagent-wrapper): add timeout for Windows process termination

- Add forceKillWaitTimeout (5s) to prevent cmd.Wait() blocking forever
- Enhance sendTermSignal with killProcessTree fallback using wmic
- Update omo README: remove sisyphus, fix model names, update config

Fixes #115

Generated with SWE-Agent.ai

Co-Authored-By: SWE-Agent.ai <noreply@swe-agent.ai>

codeagent-wrapper/signal_windows.go

@@ -9,6 +9,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"strconv"
+	"strings"
 )
 
 // sendTermSignal on Windows directly kills the process.
@@ -31,6 +32,56 @@ func sendTermSignal(proc processHandle) error {
 		if err := cmd.Run(); err == nil {
 			return nil
 		}
+		if err := killProcessTree(pid); err == nil {
+			return nil
+		}
 	}
 	return proc.Kill()
 }
+
+func killProcessTree(pid int) error {
+	if pid <= 0 {
+		return nil
+	}
+
+	wmic := "wmic"
+	if root := os.Getenv("SystemRoot"); root != "" {
+		wmic = filepath.Join(root, "System32", "wbem", "WMIC.exe")
+	}
+
+	queryChildren := "(ParentProcessId=" + strconv.Itoa(pid) + ")"
+	listCmd := exec.Command(wmic, "process", "where", queryChildren, "get", "ProcessId", "/VALUE")
+	listCmd.Stderr = io.Discard
+	out, err := listCmd.Output()
+	if err == nil {
+		for _, childPID := range parseWMICPIDs(out) {
+			_ = killProcessTree(childPID)
+		}
+	}
+
+	querySelf := "(ProcessId=" + strconv.Itoa(pid) + ")"
+	termCmd := exec.Command(wmic, "process", "where", querySelf, "call", "terminate")
+	termCmd.Stdout = io.Discard
+	termCmd.Stderr = io.Discard
+	if termErr := termCmd.Run(); termErr != nil && err == nil {
+		err = termErr
+	}
+	return err
+}
+
+func parseWMICPIDs(out []byte) []int {
+	const prefix = "ProcessId="
+	var pids []int
+	for _, line := range strings.Split(string(out), "\n") {
+		line = strings.TrimSpace(line)
+		if !strings.HasPrefix(line, prefix) {
+			continue
+		}
+		n, err := strconv.Atoi(strings.TrimSpace(strings.TrimPrefix(line, prefix)))
+		if err != nil || n <= 0 {
+			continue
+		}
+		pids = append(pids, n)
+	}
+	return pids
+}