Remove duplicate OpenMeteo tool and move to Bridge structure

The OpenMeteo tool was duplicated in both Toolbox/Tool and Bridge/OpenMeteo
directories. This commit removes the duplicate and ensures everything uses
the Bridge structure.

Changes:
- Remove src/agent/src/Toolbox/Tool/OpenMeteo.php
- Move tests from tests/Toolbox/Tool to tests/Bridge/OpenMeteo
- Move fixtures from fixtures/Tool to fixtures/Bridge/OpenMeteo
- Rename fixture files from openmeteo-*.json to *.json
- Update test to use Bridge namespace and new fixture paths

Author: OskarStark

src/agent/src/Bridge/OpenMeteo/Tests/OpenMeteoTest.php

@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\AI\Agent\Bridge\OpenMeteo\Tests;
+namespace Symfony\AI\Agent\Tests\Bridge\OpenMeteo;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\AI\Agent\Bridge\OpenMeteo\OpenMeteo;
@@ -20,7 +20,7 @@ final class OpenMeteoTest extends TestCase
 {
     public function testCurrent()
     {
-        $result = JsonMockResponse::fromFile(__DIR__.'/fixtures/current.json');
+        $result = JsonMockResponse::fromFile(__DIR__.'/Fixtures/current.json');
         $httpClient = new MockHttpClient($result);
 
         $openMeteo = new OpenMeteo($httpClient);
@@ -33,12 +33,12 @@ public function testCurrent()
             'wind_speed' => '10.7km/h',
         ];
 
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testForecast()
     {
-        $result = JsonMockResponse::fromFile(__DIR__.'/fixtures/forecast.json');
+        $result = JsonMockResponse::fromFile(__DIR__.'/Fixtures/forecast.json');
         $httpClient = new MockHttpClient($result);
 
         $openMeteo = new OpenMeteo($httpClient);
@@ -65,6 +65,6 @@ public function testForecast()
             ],
         ];
 
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 }