fix: pin User, Company, CompanyUser to production connection via getConnectionName()

These models are authoritative in production. Sandbox contains only a
read-only mirror synced by sandbox:sync. Using getConnectionName() ensures
Eloquent always routes queries for these models to the production DB,
regardless of what setSandboxSession() does to database.default or
fleetbase.connection.db at runtime.

Also reverts the previous SyncSandbox change that added CompanyUser to the
syncable list — that was a workaround for the wrong root cause.

Author: Ronald A Richardson

src/Console/Commands/SyncSandbox.php

@@ -56,13 +56,10 @@ public function handle()
             DB::connection('sandbox')
                 ->table('api_credentials')
                 ->truncate();
-            DB::connection('sandbox')
-                ->table('company_users')
-                ->truncate();
         }
 
         // Models that need to be synced from Production to Sandbox
-        $syncable = [\Fleetbase\Models\User::class, \Fleetbase\Models\Company::class, \Fleetbase\Models\CompanyUser::class, \Fleetbase\Models\ApiCredential::class];
+        $syncable = [\Fleetbase\Models\User::class, \Fleetbase\Models\Company::class, \Fleetbase\Models\ApiCredential::class];
 
         // Sync each syncable data model
         foreach ($syncable as $model) {

src/Models/Company.php

@@ -42,6 +42,16 @@ class Company extends Model
      */
     protected $connection = 'mysql';
 
+    /**
+     * Always use the production database connection.
+     *
+     * @return string
+     */
+    public function getConnectionName(): string
+    {
+        return env('DB_CONNECTION', 'mysql');
+    }
+
     /**
      * The database table used by the model.
      *

src/Models/CompanyUser.php

@@ -23,6 +23,16 @@ class CompanyUser extends Model
      */
     protected $table = 'company_users';
 
+    /**
+     * Always use the production database connection.
+     *
+     * @return string
+     */
+    public function getConnectionName(): string
+    {
+        return env('DB_CONNECTION', 'mysql');
+    }
+
     /**
      * The attributes that are mass assignable.
      *

src/Models/User.php

@@ -74,6 +74,20 @@ class User extends Authenticatable
      */
     protected $connection = 'mysql';
 
+    /**
+     * Always use the production database connection.
+     *
+     * User records are authoritative in production and are only mirrored
+     * (read-only) to sandbox via sandbox:sync. Reads and writes must always
+     * target production regardless of whether sandbox mode is active.
+     *
+     * @return string
+     */
+    public function getConnectionName(): string
+    {
+        return env('DB_CONNECTION', 'mysql');
+    }
+
     /**
      * Override the default primary key.
      *