debug: Add logging for all *_FILE environment variables

- Log all *_FILE variables from getenv() and $_ENV
- Help diagnose why REDIS_PASSWORD_FILE is not set
- Check if other *_FILE variables are present

src/Framework/Core/AppBootstrapper.php

@@ -74,6 +74,23 @@ final readonly class AppBootstrapper
             error_log("\$_SERVER['REDIS_PASSWORD_FILE']: " . $_SERVER['REDIS_PASSWORD_FILE']);
         }
         
+        // Check all *_FILE variables
+        error_log("------ ALL *_FILE VARIABLES ------");
+        $allEnvVars = getenv();
+        if ($allEnvVars !== false) {
+            foreach ($allEnvVars as $key => $value) {
+                if (str_ends_with($key, '_FILE')) {
+                    error_log("$key: $value");
+                }
+            }
+        }
+        error_log("------ \$_ENV *_FILE VARIABLES ------");
+        foreach ($_ENV as $key => $value) {
+            if (is_string($key) && str_ends_with($key, '_FILE')) {
+                error_log("$key: $value");
+            }
+        }
+        
         // Check if file exists at expected location
         $expectedFile = '/run/secrets/redis_password';
         error_log("Expected file path: $expectedFile");