add whisper-cpp provider with 9 local models

internal/provider/whisper_cpp.go

@@ -0,0 +1,76 @@
+package provider
+
+import (
+	"github.com/leonardotrapani/hyprvoice/internal/language"
+	"github.com/leonardotrapani/hyprvoice/internal/models/whisper"
+)
+
+// WhisperCppProvider implements Provider for local whisper.cpp transcription
+type WhisperCppProvider struct{}
+
+func (p *WhisperCppProvider) Name() string {
+	return "whisper-cpp"
+}
+
+func (p *WhisperCppProvider) RequiresAPIKey() bool {
+	return false
+}
+
+func (p *WhisperCppProvider) ValidateAPIKey(key string) bool {
+	return true // no API key needed
+}
+
+func (p *WhisperCppProvider) IsLocal() bool {
+	return true
+}
+
+func (p *WhisperCppProvider) Models() []Model {
+	allLangs := language.AllLanguageCodes()
+	englishOnly := []string{"en"}
+
+	whisperModels := whisper.ListModels()
+	result := make([]Model, 0, len(whisperModels))
+
+	for _, wm := range whisperModels {
+		var langs []string
+		if wm.Multilingual {
+			langs = allLangs
+		} else {
+			langs = englishOnly
+		}
+
+		result = append(result, Model{
+			ID:                 wm.ID,
+			Name:               wm.Name,
+			Description:        modelDescription(wm),
+			Type:               Transcription,
+			Streaming:          false,
+			Local:              true,
+			AdapterType:        "whisper-cpp",
+			SupportedLanguages: langs,
+			Endpoint:           nil, // local CLI, no HTTP endpoint
+			LocalInfo: &LocalModelInfo{
+				Filename:    wm.Filename,
+				Size:        wm.Size,
+				DownloadURL: whisper.GetDownloadURL(wm.ID),
+			},
+		})
+	}
+
+	return result
+}
+
+func modelDescription(m whisper.ModelInfo) string {
+	if m.Multilingual {
+		return "Multilingual local transcription"
+	}
+	return "English-only local transcription (faster)"
+}
+
+func (p *WhisperCppProvider) DefaultModel(t ModelType) string {
+	switch t {
+	case Transcription:
+		return "base.en"
+	}
+	return ""
+}