Reduce SSH poll interval to 200ms with immediate probe

Change sshWaitPollInterval from 2s to 200ms and probe immediately
on entry before starting the ticker. This avoids wasting up to one
full poll interval when SSH becomes ready between ticks.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JAORMX

ssh/client.go

@@ -24,7 +24,7 @@ import (
 
 const (
 	// sshWaitPollInterval is the interval between SSH readiness polls.
-	sshWaitPollInterval = 2 * time.Second
+	sshWaitPollInterval = 200 * time.Millisecond
 
 	// defaultSSHTimeout is the default timeout for SSH connection attempts.
 	defaultSSHTimeout = 10 * time.Second
@@ -232,10 +232,21 @@ func (c *Client) WaitForReady(ctx context.Context) error {
 		"user", c.user,
 	)
 
+	// Probe immediately before starting the ticker to avoid wasting
+	// up to one full poll interval when SSH is already ready.
+	probeCount := 1
+	if err := c.probe(ctx); err == nil {
+		span.SetAttributes(attribute.Int("ssh.probes_total", probeCount))
+		slog.Info("SSH is ready",
+			"host", c.host,
+			"port", c.port,
+		)
+		return nil
+	}
+
 	ticker := time.NewTicker(sshWaitPollInterval)
 	defer ticker.Stop()
 
-	probeCount := 0
 	for {
 		select {
 		case <-ctx.Done():