feat: Enhance VCS config guidance & add AI 'performance' label

Author: thomas-vilte

internal/i18n/locales/active.en.toml

@@ -209,6 +209,7 @@ invalid_repo_format = "Invalid repository format"
 pr_summary_error = "Error generating PR summary"
 no_repo_configured = "No repository configured. Use --repo or configure an active VCS provider"
 vcs_provider_not_configured = "VCS provider '{{.Provider}}' is not configured"
+vcs_provider_auto_detected_not_configured = "VCS provider '%s' auto-detected but not configured. Use 'matecommit config set-vcs --provider %s --token <token>' to configure it"
 
 [label]
 feature = "New features"

internal/i18n/locales/active.es.toml

@@ -217,6 +217,7 @@ invalid_repo_format = "Formato de repositorio inválido"
 pr_summary_error = "Error generando el resumen del PR"
 no_repo_configured = "No se ha configurado ningún repositorio. Usa --repo o configura un proveedor VCS activo"
 vcs_provider_not_configured = "El proveedor VCS '{{.Provider}}' no está configurado"
+vcs_provider_auto_detected_not_configured = "Proveedor de VCS '%s' detectado automáticamente pero no configurado. Use 'matecommit config set-vcs --provider %s --token <token>' para configurarlo"
 
 [label]
 feature = "Nuevas funcionalidades"

internal/infrastructure/ai/gemini/gemini_pr_summarizer_service.go

@@ -23,12 +23,13 @@ type GeminiPRSummarizer struct {
 }
 
 var validLabels = map[string]bool{
-	"feature":  true,
-	"fix":      true,
-	"refactor": true,
-	"docs":     true,
-	"infra":    true,
-	"test":     true,
+	"feature":     true,
+	"fix":         true,
+	"refactor":    true,
+	"docs":        true,
+	"infra":       true,
+	"test":        true,
+	"performance": true,
 }
 
 func NewGeminiPRSummarizer(ctx context.Context, cfg *config.Config, trans *i18n.Translations) (*GeminiPRSummarizer, error) {