feat: integrate codebaseIndexGeminiBaseUrl in state management

- Add codebaseIndexGeminiBaseUrl to ClineProvider state objects in getStateToPostToWebview() and getState()
- Add codebaseIndexGeminiBaseUrl to saveCodeIndexSettingsAtomic handler in webviewMessageHandler
- Add codebaseIndexGeminiBaseUrl field to WebviewMessage codeIndexSettings type definition
- Ensures Gemini base URL setting is properly managed in extension state

src/core/webview/ClineProvider.ts

@@ -1544,6 +1544,7 @@ export class ClineProvider
 				codebaseIndexEmbedderModelId: codebaseIndexConfig?.codebaseIndexEmbedderModelId ?? "",
 				codebaseIndexEmbedderModelDimension: codebaseIndexConfig?.codebaseIndexEmbedderModelDimension ?? 1536,
 				codebaseIndexOpenAiCompatibleBaseUrl: codebaseIndexConfig?.codebaseIndexOpenAiCompatibleBaseUrl,
+				codebaseIndexGeminiBaseUrl: codebaseIndexConfig?.codebaseIndexGeminiBaseUrl ?? "",
 				codebaseIndexSearchMaxResults: codebaseIndexConfig?.codebaseIndexSearchMaxResults,
 				codebaseIndexSearchMinScore: codebaseIndexConfig?.codebaseIndexSearchMinScore,
 			},
@@ -1711,6 +1712,7 @@ export class ClineProvider
 					stateValues.codebaseIndexConfig?.codebaseIndexEmbedderModelDimension,
 				codebaseIndexOpenAiCompatibleBaseUrl:
 					stateValues.codebaseIndexConfig?.codebaseIndexOpenAiCompatibleBaseUrl,
+				codebaseIndexGeminiBaseUrl: stateValues.codebaseIndexConfig?.codebaseIndexGeminiBaseUrl ?? "",
 				codebaseIndexSearchMaxResults: stateValues.codebaseIndexConfig?.codebaseIndexSearchMaxResults,
 				codebaseIndexSearchMinScore: stateValues.codebaseIndexConfig?.codebaseIndexSearchMinScore,
 			},

src/core/webview/webviewMessageHandler.ts

@@ -1962,6 +1962,7 @@ export const webviewMessageHandler = async (
 					codebaseIndexEmbedderModelId: settings.codebaseIndexEmbedderModelId,
 					codebaseIndexEmbedderModelDimension: settings.codebaseIndexEmbedderModelDimension, // Generic dimension
 					codebaseIndexOpenAiCompatibleBaseUrl: settings.codebaseIndexOpenAiCompatibleBaseUrl,
+					codebaseIndexGeminiBaseUrl: settings.codebaseIndexGeminiBaseUrl,
 					codebaseIndexSearchMaxResults: settings.codebaseIndexSearchMaxResults,
 					codebaseIndexSearchMinScore: settings.codebaseIndexSearchMinScore,
 				}

src/shared/WebviewMessage.ts

@@ -244,6 +244,7 @@ export interface WebviewMessage {
 		codebaseIndexEmbedderModelId: string
 		codebaseIndexEmbedderModelDimension?: number // Generic dimension for all providers
 		codebaseIndexOpenAiCompatibleBaseUrl?: string
+		codebaseIndexGeminiBaseUrl?: string
 		codebaseIndexSearchMaxResults?: number
 		codebaseIndexSearchMinScore?: number