refactor(dev): replace v5:sync-dev-lima-servers with V5DevLimaSeeder

Switch Lima VM dev-environment sync from a custom Artisan command to a
database seeder. The seeder creates/updates the Development-Lima cluster
and its two servers idempotently, reading ssh_user from the
COOLIFY_CLI_SSH_USER env var (exposed via config('coold.dev_ssh_user')).

dev.sh now passes COOLIFY_CLI_SSH_USER and runs db:seed instead of
building per-server --server flag arrays.

config/coold.php

@@ -6,4 +6,5 @@ return [
     'corrosion_version' => env('COOLIFY_CORROSION_VERSION', 'v1.0.0'),
     'dev_builder_capacity' => (int) env('COOLIFY_COOLD_VM_BUILDER_CAPACITY', 2),
     'dev_builder_enabled' => (int) env('COOLIFY_COOLD_VM_BUILDER_CAPACITY', 2) > 0,
+    'dev_ssh_user' => env('COOLIFY_CLI_SSH_USER', get_current_user()),
 ];