diff --git a/phpstan.neon b/phpstan.neon
index 6e451fa..1d5823a 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,4 +1,4 @@
 parameters:
-    level: 6
+    level: 7
     paths:
         - src
diff --git a/src/Console/Command/System/CheckCommand.php b/src/Console/Command/System/CheckCommand.php
index ae5dace..52f6a75 100644
--- a/src/Console/Command/System/CheckCommand.php
+++ b/src/Console/Command/System/CheckCommand.php
@@ -52,6 +52,7 @@ protected function executeCommand(InputInterface $input, OutputInterface $output
         $dbType = $this->getDatabaseType();
         $osInfo = $this->getShortOsInfo();
         $magentoVersion = $this->productMetadata->getVersion();
+        /** @var string $latestLtsNodeVersion */
         $latestLtsNodeVersion = $this->escaper->escapeHtml($this->getLatestLtsNodeVersion());
         $composerVersion = $this->getComposerVersion();
         $npmVersion = $this->getNpmVersion();
@@ -227,9 +228,14 @@ private function getMysqlVersionViaPdo(): ?string
 
             $dsn = "mysql:host=$host;port=$port";
             $pdo = new \PDO($dsn, $user, $pass, [\PDO::ATTR_TIMEOUT => 1]);
-            $version = $pdo->query('SELECT VERSION()')->fetchColumn();
+            $stmt = $pdo->query('SELECT VERSION()');
+            if ($stmt === false) {
+                return null;
+            }
 
-            return !empty($version) ? $version : null;
+            $version = $stmt->fetchColumn();
+
+            return !empty($version) ? (string)$version : null;
         } catch (\Exception $e) {
             return null;
         }
diff --git a/src/Console/Command/Theme/TokensCommand.php b/src/Console/Command/Theme/TokensCommand.php
index 5b1687c..f6daf36 100644
--- a/src/Console/Command/Theme/TokensCommand.php
+++ b/src/Console/Command/Theme/TokensCommand.php
@@ -175,6 +175,10 @@ private function generateTokens(string $tailwindPath, string $themeCode, bool $i
         }
 
         $currentDir = getcwd();
+        if ($currentDir === false) {
+            $this->io->error("Cannot determine current directory");
+            return false;
+        }
         chdir($tailwindPath);
 
         try {
diff --git a/src/Model/TemplateEngine/Decorator/InspectorHints.php b/src/Model/TemplateEngine/Decorator/InspectorHints.php
index fa4aa83..58cb927 100644
--- a/src/Model/TemplateEngine/Decorator/InspectorHints.php
+++ b/src/Model/TemplateEngine/Decorator/InspectorHints.php
@@ -105,6 +105,10 @@ private function injectInspectorAttributes(string $html, BlockInterface $block,
         // JSON encode with proper escaping for HTML comments
         $jsonMetadata = json_encode($metadata, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
 
+        if ($jsonMetadata === false) {
+            return $html;
+        }
+
         // Escape any comment terminators in JSON to prevent breaking out of comment
         $jsonMetadata = str_replace('-->', '-->', $jsonMetadata);
 
@@ -164,7 +168,7 @@ private function getViewModel(BlockInterface $block): string
     {
         if (method_exists($block, 'getViewModel')) {
             $viewModel = $block->getViewModel();
-            if ($viewModel) {
+            if (is_object($viewModel)) {
                 return get_class($viewModel);
             }
         }
diff --git a/src/Service/NodePackageManager.php b/src/Service/NodePackageManager.php
index 8966c70..8bd4fe6 100644
--- a/src/Service/NodePackageManager.php
+++ b/src/Service/NodePackageManager.php
@@ -31,6 +31,11 @@ public function __construct(
     public function installNodeModules(string $path, SymfonyStyle $io, bool $isVerbose): bool
     {
         $currentDir = getcwd();
+        if ($currentDir === false) {
+            $io->error('Cannot determine current directory');
+            return false;
+        }
+
         chdir($path);
 
         try {
@@ -85,6 +90,10 @@ public function isNodeModulesInSync(string $path): bool
         }
 
         $currentDir = getcwd();
+        if ($currentDir === false) {
+            return false;
+        }
+
         chdir($path);
 
         try {
@@ -107,6 +116,10 @@ public function isNodeModulesInSync(string $path): bool
     public function checkOutdatedPackages(string $path, SymfonyStyle $io): void
     {
         $currentDir = getcwd();
+        if ($currentDir === false) {
+            return;
+        }
+
         chdir($path);
 
         try {
diff --git a/src/Service/ThemeBuilder/HyvaThemes/Builder.php b/src/Service/ThemeBuilder/HyvaThemes/Builder.php
index d02e2a5..6aed047 100644
--- a/src/Service/ThemeBuilder/HyvaThemes/Builder.php
+++ b/src/Service/ThemeBuilder/HyvaThemes/Builder.php
@@ -130,6 +130,10 @@ private function buildTheme(string $themePath, SymfonyStyle $io, bool $isVerbose
 
         // Change to tailwind directory and run build
         $currentDir = getcwd();
+        if ($currentDir === false) {
+            $io->error('Cannot determine current directory');
+            return false;
+        }
         chdir($tailwindPath);
 
         try {
diff --git a/src/Service/ThemeBuilder/TailwindCSS/Builder.php b/src/Service/ThemeBuilder/TailwindCSS/Builder.php
index 23e4ce4..766d2a4 100644
--- a/src/Service/ThemeBuilder/TailwindCSS/Builder.php
+++ b/src/Service/ThemeBuilder/TailwindCSS/Builder.php
@@ -89,6 +89,10 @@ public function build(string $themeCode, string $themePath, SymfonyStyle $io, Ou
 
         // Change to tailwind directory and run build
         $currentDir = getcwd();
+        if ($currentDir === false) {
+            $io->error('Cannot determine current directory');
+            return false;
+        }
         chdir($tailwindPath);
 
         try {