fix: Add missing TTS message types to WebviewMessage and ExtensionMessage interfaces

- Add ttsProvider, ttsGoogleVoice, ttsAzureVoice, ttsAzureRegion message types
- Add getTtsVoices, getTtsUsageStats, checkTtsProviderConfigured message types
- Add ttsVoices, ttsUsageStats, ttsProviderConfigured response types
- Fix type casting for ttsProvider update
- Handle Azure region as secret storage

src/core/webview/webviewMessageHandler.ts

@@ -1318,7 +1318,7 @@ export const webviewMessageHandler = async (
 		case "ttsProvider":
 			// Handle TTS provider selection
 			if (message.text) {
-				await updateGlobalState("ttsProvider", message.text)
+				await updateGlobalState("ttsProvider", message.text as "default" | "google-cloud" | "azure")
 				await provider.postStateToWebview()
 			}
 			break
@@ -1337,9 +1337,9 @@ export const webviewMessageHandler = async (
 			}
 			break
 		case "ttsAzureRegion":
-			// Handle Azure region selection
+			// Handle Azure region selection (stored as a secret)
 			if (message.text) {
-				await updateGlobalState("ttsAzureRegion", message.text)
+				await provider.contextProxy.storeSecret("azureTtsRegion", message.text)
 				await provider.postStateToWebview()
 			}
 			break

src/shared/ExtensionMessage.ts

@@ -101,6 +101,9 @@ export interface ExtensionMessage {
 		| "remoteBrowserEnabled"
 		| "ttsStart"
 		| "ttsStop"
+		| "ttsVoices"
+		| "ttsUsageStats"
+		| "ttsProviderConfigured"
 		| "maxReadFileLine"
 		| "fileSearchResults"
 		| "toggleApiConfigPin"
@@ -211,6 +214,10 @@ export interface ExtensionMessage {
 	queuedMessages?: QueuedMessage[]
 	list?: string[] // For dismissedUpsells
 	organizationId?: string | null // For organizationSwitchResult
+	voices?: any[] // For TTS voices
+	stats?: any // For TTS usage stats
+	provider?: string // For TTS provider checks
+	configured?: boolean // For TTS provider configuration status
 }
 
 export type ExtensionState = Pick<

src/shared/WebviewMessage.ts

@@ -97,6 +97,13 @@ export interface WebviewMessage {
 		| "soundEnabled"
 		| "ttsEnabled"
 		| "ttsSpeed"
+		| "ttsProvider"
+		| "ttsGoogleVoice"
+		| "ttsAzureVoice"
+		| "ttsAzureRegion"
+		| "getTtsVoices"
+		| "getTtsUsageStats"
+		| "checkTtsProviderConfigured"
 		| "soundVolume"
 		| "diffEnabled"
 		| "enableCheckpoints"