Add AI usage logs for Gemini and Whisper

- Migration + AiUsageLog model with tokens, duration, time, cost fields
- GeminiIntentService and GeminiVisionService log every API call
  with input/output token counts from usageMetadata and response time
- TelegramBotService logs Whisper calls with audio duration (from Telegram)
  and calculates cost at $1/second
- Whisper voice duration now passed from TelegramWebhookController
- Free text in Telegram now tries Gemini intent detection before showing menu
- /chat/ia-logs: Livewire component with summary cards + filterable table
- Whisper connection test button in config panel
- "Logs IA" link added to Chat/Bot nav section

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Http/Livewire/Chat/ShowConfiguracionChat.php

@@ -16,6 +16,7 @@ class ShowConfiguracionChat extends Component
     public string $mensaje_bienvenida    = '';
     public string $mensaje_transferencia = '';
     public string $webhookResult         = '';
+    public string $whisperResult         = '';
 
     // ── Gemini IA ─────────────────────────────────────────────
     public string $gemini_api_key        = '';
@@ -85,6 +86,29 @@ class ShowConfiguracionChat extends Component
         $this->alert('success', 'Configuracion guardada correctamente.');
     }
 
+    public function resetearWhisper(): void
+    {
+        $url   = trim($this->whisper_url   ?: ChatConfig::get('whisper_url'));
+        $token = trim($this->whisper_token ?: ChatConfig::get('whisper_token'));
+
+        if (! $url) {
+            $this->whisperResult = '⚠️ La URL de Whisper está vacía.';
+            return;
+        }
+
+        try {
+            $response = Http::timeout(10)
+                ->withBasicAuth('whisper', $token)
+                ->get(rtrim($url, '/asr'));  // ping al servidor
+
+            $this->whisperResult = $response->successful()
+                ? '✅ Conexión con Whisper establecida correctamente.'
+                : '❌ Whisper respondió con error ' . $response->status() . '.';
+        } catch (\Throwable $e) {
+            $this->whisperResult = '❌ No se pudo conectar con Whisper: ' . $e->getMessage();
+        }
+    }
+
     public function registrarWebhook(): void
     {
         $token = trim($this->telegram_token);