fix(database): enforce credential format validation and sanitize init/SSL arguments

Add ValidationPatterns helpers for database identifiers and passwords,
apply them across database Livewire components and the API controller,
encode MongoDB init script values via json_encode, and pass the MySQL
user through escapeshellarg when generating SSL chown commands.

app/Livewire/Project/Database/Mariadb/General.php

@@ -74,10 +74,10 @@ class General extends Component
         return [
             'name' => ValidationPatterns::nameRules(),
             'description' => ValidationPatterns::descriptionRules(),
-            'mariadbRootPassword' => 'required',
-            'mariadbUser' => 'required',
-            'mariadbPassword' => 'required',
-            'mariadbDatabase' => 'required',
+            'mariadbRootPassword' => ValidationPatterns::databasePasswordRules(),
+            'mariadbUser' => ValidationPatterns::databaseIdentifierRules(),
+            'mariadbPassword' => ValidationPatterns::databasePasswordRules(),
+            'mariadbDatabase' => ValidationPatterns::databaseIdentifierRules(),
             'mariadbConf' => 'nullable',
             'image' => 'required',
             'portsMappings' => ValidationPatterns::portMappingRules(),
@@ -97,10 +97,10 @@ class General extends Component
             ValidationPatterns::portMappingMessages(),
             [
                 'name.required' => 'The Name field is required.',
-                'mariadbRootPassword.required' => 'The Root Password field is required.',
-                'mariadbUser.required' => 'The MariaDB User field is required.',
-                'mariadbPassword.required' => 'The MariaDB Password field is required.',
-                'mariadbDatabase.required' => 'The MariaDB Database field is required.',
+                ...ValidationPatterns::databasePasswordMessages('mariadbRootPassword', 'Root Password'),
+                ...ValidationPatterns::databaseIdentifierMessages('mariadbUser', 'MariaDB User'),
+                ...ValidationPatterns::databasePasswordMessages('mariadbPassword', 'MariaDB Password'),
+                ...ValidationPatterns::databaseIdentifierMessages('mariadbDatabase', 'MariaDB Database'),
                 'image.required' => 'The Docker Image field is required.',
                 'publicPort.integer' => 'The Public Port must be an integer.',
                 'publicPort.min' => 'The Public Port must be at least 1.',