feat: initialize VS Code Language Model client in constructor

Author: QuinsZouls

src/api/providers/vscode-lm.ts

@@ -61,6 +61,7 @@ export class VsCodeLmHandler extends BaseProvider implements SingleCompletionHan
 					}
 				}
 			})
+			this.initializeClient()
 		} catch (error) {
 			// Ensure cleanup if constructor fails
 			this.dispose()
@@ -70,7 +71,30 @@ export class VsCodeLmHandler extends BaseProvider implements SingleCompletionHan
 			)
 		}
 	}
-
+	/**
+	 * Initializes the VS Code Language Model client.
+	 * This method is called during the constructor to set up the client.
+	 * This useful when the client is not created yet and call getModel() before the client is created.
+	 * @returns Promise<void>
+	 * @throws Error when client initialization fails
+	 */
+	async initializeClient(): Promise<void> {
+		try {
+			// Check if the client is already initialized
+			if (this.client) {
+				console.debug("Roo Code <Language Model API>: Client already initialized")
+				return
+			}
+			// Create a new client instance
+			this.client = await this.createClient(this.options.vsCodeLmModelSelector || {})
+			console.debug("Roo Code <Language Model API>: Client initialized successfully")
+		} catch (error) {
+			// Handle errors during client initialization
+			const errorMessage = error instanceof Error ? error.message : "Unknown error"
+			console.error("Roo Code <Language Model API>: Client initialization failed:", errorMessage)
+			throw new Error(`Roo Code <Language Model API>: Failed to initialize client: ${errorMessage}`)
+		}
+	}
 	/**
 	 * Creates a language model chat client based on the provided selector.
 	 *