feat(proxy): validate stored config matches current proxy type

Add validation in GetProxyConfiguration to detect when stored proxy config
belongs to a different proxy type (e.g., Traefik config on a Caddy server)
and trigger regeneration with a warning log. Clear cached proxy configuration
and settings when proxy type is changed to prevent stale configs from being
reused. Includes tests verifying config rejection on type mismatch and
graceful fallback on invalid YAML.

tests/Unit/ProxyConfigRecoveryTest.php

@@ -10,20 +10,26 @@ beforeEach(function () {
     Cache::spy();
 });
 
-function mockServerWithDbConfig(?string $savedConfig): object
+function mockServerWithDbConfig(?string $savedConfig, string $proxyType = 'TRAEFIK'): object
 {
     $proxyAttributes = Mockery::mock(SchemalessAttributes::class);
     $proxyAttributes->shouldReceive('get')
         ->with('last_saved_proxy_configuration')
         ->andReturn($savedConfig);
 
+    $proxyPath = match ($proxyType) {
+        'CADDY' => '/data/coolify/proxy/caddy',
+        'NGINX' => '/data/coolify/proxy/nginx',
+        default => '/data/coolify/proxy/',
+    };
+
     $server = Mockery::mock('App\Models\Server');
     $server->shouldIgnoreMissing();
     $server->shouldReceive('getAttribute')->with('proxy')->andReturn($proxyAttributes);
     $server->shouldReceive('getAttribute')->with('id')->andReturn(1);
     $server->shouldReceive('getAttribute')->with('name')->andReturn('Test Server');
-    $server->shouldReceive('proxyType')->andReturn('TRAEFIK');
-    $server->shouldReceive('proxyPath')->andReturn('/data/coolify/proxy');
+    $server->shouldReceive('proxyType')->andReturn($proxyType);
+    $server->shouldReceive('proxyPath')->andReturn($proxyPath);
 
     return $server;
 }
@@ -107,3 +113,61 @@ it('does not read from disk when DB config exists', function () {
 
     expect($result)->toBe($savedConfig);
 });
+
+it('rejects stored Traefik config when proxy type is CADDY', function () {
+    Log::swap(new \Illuminate\Log\LogManager(app()));
+    Log::spy();
+
+    $traefikConfig = "services:\n  traefik:\n    image: traefik:v3.6\n";
+    $server = mockServerWithDbConfig($traefikConfig, 'CADDY');
+
+    // Config type mismatch should trigger regeneration, which will try
+    // backfillFromDisk (instant_remote_process) then generateDefault.
+    // Both will fail in test env, but the warning log proves mismatch was detected.
+    try {
+        GetProxyConfiguration::run($server);
+    } catch (\Throwable $e) {
+        // Expected — regeneration requires SSH/full server setup
+    }
+
+    Log::shouldHaveReceived('warning')
+        ->withArgs(fn ($message) => str_contains($message, 'does not match current proxy type'))
+        ->once();
+});
+
+it('rejects stored Caddy config when proxy type is TRAEFIK', function () {
+    Log::swap(new \Illuminate\Log\LogManager(app()));
+    Log::spy();
+
+    $caddyConfig = "services:\n  caddy:\n    image: lucaslorentz/caddy-docker-proxy:2.8-alpine\n";
+    $server = mockServerWithDbConfig($caddyConfig, 'TRAEFIK');
+
+    try {
+        GetProxyConfiguration::run($server);
+    } catch (\Throwable $e) {
+        // Expected — regeneration requires SSH/full server setup
+    }
+
+    Log::shouldHaveReceived('warning')
+        ->withArgs(fn ($message) => str_contains($message, 'does not match current proxy type'))
+        ->once();
+});
+
+it('accepts stored Caddy config when proxy type is CADDY', function () {
+    $caddyConfig = "services:\n  caddy:\n    image: lucaslorentz/caddy-docker-proxy:2.8-alpine\n";
+    $server = mockServerWithDbConfig($caddyConfig, 'CADDY');
+
+    $result = GetProxyConfiguration::run($server);
+
+    expect($result)->toBe($caddyConfig);
+});
+
+it('accepts stored config when YAML parsing fails', function () {
+    $invalidYaml = "this: is: not: [valid yaml: {{{}}}";
+    $server = mockServerWithDbConfig($invalidYaml, 'TRAEFIK');
+
+    // Invalid YAML should not block — configMatchesProxyType returns true on parse failure
+    $result = GetProxyConfiguration::run($server);
+
+    expect($result)->toBe($invalidYaml);
+});