diff --git a/install/agent-install.sh b/install/agent-install.sh
index eeb3348..6706f89 100644
--- a/install/agent-install.sh
+++ b/install/agent-install.sh
@@ -21,6 +21,7 @@ echo "[1/5] Creating config directory..."
 mkdir -p "$CONFIG_DIR"
 
 echo "[2/5] Installing agent binary..."
+mkdir -p "$(dirname "$AGENT_BIN")"
 cat > "$AGENT_BIN" << 'AGENTSCRIPT'
 #!/bin/bash
 set -e
@@ -49,7 +50,6 @@ collect_metrics() {
 }
 
 push_metrics() {
-    local payload
     payload=$(cat <<EOF
 {
     "agent_key": "$AGENT_KEY",
@@ -75,7 +75,7 @@ main() {
         exit 1
     fi
     echo "ServerManager Agent started (interval: ${INTERVAL}s)"
-    sleep 5
+    sleep 2
     while true; do
         collect_metrics
         http_code=$(push_metrics)
@@ -91,6 +91,12 @@ main
 AGENTSCRIPT
 chmod +x "$AGENT_BIN"
 
+if [ ! -f "$AGENT_BIN" ]; then
+    echo "ERROR: Agent binary was not created at $AGENT_BIN"
+    exit 1
+fi
+echo "  Verified: $AGENT_BIN ($(wc -c < "$AGENT_BIN") bytes)"
+
 echo "[3/5] Writing config..."
 cat > "$CONFIG_FILE" << EOF
 SERVER_URL="$SERVER_URL"
diff --git a/src/Services/AgentService.php b/src/Services/AgentService.php
index e092679..c8f4469 100644
--- a/src/Services/AgentService.php
+++ b/src/Services/AgentService.php
@@ -51,9 +51,11 @@ class AgentService
 
         $b64 = base64_encode($script);
         $remoteCommand = sprintf(
-            'echo %s | base64 -d | sudo bash -s -- %s %s 2>&1',
+            'echo %s | base64 -d > /tmp/_sm_install.sh && chmod +x /tmp/_sm_install.sh && (script -q -c "sudo bash /tmp/_sm_install.sh %s %s" /dev/null < /dev/null 2>/dev/null || sudo bash /tmp/_sm_install.sh %s %s) 2>&1; rc=$?; rm -f /tmp/_sm_install.sh; exit $rc',
             escapeshellarg($b64),
             escapeshellarg($serverUrl),
+            escapeshellarg($agentKey),
+            escapeshellarg($serverUrl),
             escapeshellarg($agentKey)
         );
 
@@ -63,7 +65,7 @@ class AgentService
                 return ['success' => false, 'error' => 'SSH connection failed'];
             }
 
-            $result = $ssh->exec($remoteCommand, 120, true);
+            $result = $ssh->exec($remoteCommand, 120);
             $ssh->disconnect();
 
             $output = trim($result['output']);
@@ -117,7 +119,7 @@ class AgentService
         $script = file_get_contents($scriptPath);
 
         $remoteCommand = sprintf(
-            'echo %s | base64 -d | sudo bash 2>&1',
+            'echo %s | base64 -d > /tmp/_sm_uninstall.sh && chmod +x /tmp/_sm_uninstall.sh && (script -q -c "sudo bash /tmp/_sm_uninstall.sh" /dev/null < /dev/null 2>/dev/null || sudo bash /tmp/_sm_uninstall.sh) 2>&1; rc=$?; rm -f /tmp/_sm_uninstall.sh; exit $rc',
             escapeshellarg(base64_encode($script))
         );
 
@@ -127,7 +129,7 @@ class AgentService
                 return ['success' => false, 'error' => 'SSH connection failed'];
             }
 
-            $result = $ssh->exec($remoteCommand, 60, true);
+            $result = $ssh->exec($remoteCommand, 60);
             $ssh->disconnect();
 
             $output = trim($result['output']);
diff --git a/src/Services/SSHService.php b/src/Services/SSHService.php
index 29d5f3c..1702945 100755
--- a/src/Services/SSHService.php
+++ b/src/Services/SSHService.php
@@ -73,7 +73,7 @@ class SSHService
         }
     }
 
-    public function exec(string $command, int $timeout = 0, bool $pty = false): array
+    public function exec(string $command, int $timeout = 0): array
     {
         if ($this->connection === null || !$this->connection->isConnected()) {
             throw new \RuntimeException('No active SSH connection');
@@ -83,22 +83,10 @@ class SSHService
 
         $this->connection->setTimeout($timeout);
 
-        if ($pty) {
-            $command .= '; echo "___EXIT___:$?"';
-        }
-
-        $output = $this->connection->exec($command, null, $pty);
+        $output = $this->connection->exec($command);
         $exitStatus = $this->connection->getExitStatus();
         $stderr = $this->connection->getStdError() ?? '';
 
-        if ($pty && ($exitStatus === false || $exitStatus === null)) {
-            if (preg_match('/___EXIT___:(\d+)/', $output, $m)) {
-                $exitStatus = (int) $m[1];
-                $output = str_replace($m[0] . "\n", '', $output);
-                $output = str_replace($m[0], '', $output);
-            }
-        }
-
         $this->logger->info("SSH command executed", [
             'command' => $command,
             'exit_status' => $exitStatus,