fix: preserve model names in exported task history

- Add modelId field to ClineMessage type to store model ID with each message
- Update Task.ts to capture and store model ID when messages are created
- Update getEnvironmentDetails to accept optional model ID parameter
- Ensures exported task history shows correct model names for each message

Fixes #9580

packages/types/src/message.ts

@@ -227,6 +227,7 @@ export const clineMessageSchema = z.object({
 	isProtected: z.boolean().optional(),
 	apiProtocol: z.union([z.literal("openai"), z.literal("anthropic")]).optional(),
 	isAnswered: z.boolean().optional(),
+	modelId: z.string().optional(), // Store the model ID used when creating this message
 })
 
 export type ClineMessage = z.infer<typeof clineMessageSchema>

src/core/environment/getEnvironmentDetails.ts

@@ -22,7 +22,11 @@ import { getGitStatus } from "../../utils/git"
 import { Task } from "../task/Task"
 import { formatReminderSection } from "./reminder"
 
-export async function getEnvironmentDetails(cline: Task, includeFileDetails: boolean = false) {
+export async function getEnvironmentDetails(
+	cline: Task,
+	includeFileDetails: boolean = false,
+	overrideModelId?: string,
+) {
 	let details = ""
 
 	const clineProvider = cline.providerRef.deref()
@@ -215,7 +219,9 @@ export async function getEnvironmentDetails(cline: Task, includeFileDetails: boo
 		details += `\n\n# Current Cost\n${totalCost !== null ? `$${totalCost.toFixed(2)}` : "(Not available)"}`
 	}
 
-	const { id: modelId } = cline.api.getModel()
+	// Use the override model ID if provided (e.g., for preserving historical model in exports)
+	// Otherwise use the current model from the task
+	const modelId = overrideModelId || cline.api.getModel().id
 
 	// Add current mode and any mode-specific warnings.
 	const {

src/core/task/Task.ts

@@ -798,6 +798,10 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 	}
 
 	private async addToClineMessages(message: ClineMessage) {
+		// Add the current model ID to the message if not already present
+		if (!message.modelId) {
+			message.modelId = this.api.getModel().id
+		}
 		this.clineMessages.push(message)
 		const provider = this.providerRef.deref()
 		await provider?.postStateToWebview()
@@ -941,7 +945,15 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 					askTs = Date.now()
 					this.lastMessageTs = askTs
 					console.log(`Task#ask: new partial ask -> ${type} @ ${askTs}`)
-					await this.addToClineMessages({ ts: askTs, type: "ask", ask: type, text, partial, isProtected })
+					await this.addToClineMessages({
+						ts: askTs,
+						type: "ask",
+						ask: type,
+						text,
+						partial,
+						isProtected,
+						modelId: this.api.getModel().id,
+					})
 					// console.log("Task#ask: current ask promise was ignored (#2)")
 					throw new Error("Current ask promise was ignored (#2)")
 				}
@@ -981,7 +993,14 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 					askTs = Date.now()
 					console.log(`Task#ask: new complete ask -> ${type} @ ${askTs}`)
 					this.lastMessageTs = askTs
-					await this.addToClineMessages({ ts: askTs, type: "ask", ask: type, text, isProtected })
+					await this.addToClineMessages({
+						ts: askTs,
+						type: "ask",
+						ask: type,
+						text,
+						isProtected,
+						modelId: this.api.getModel().id,
+					})
 				}
 			}
 		} else {
@@ -992,7 +1011,14 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 			askTs = Date.now()
 			console.log(`Task#ask: new complete ask -> ${type} @ ${askTs}`)
 			this.lastMessageTs = askTs
-			await this.addToClineMessages({ ts: askTs, type: "ask", ask: type, text, isProtected })
+			await this.addToClineMessages({
+				ts: askTs,
+				type: "ask",
+				ask: type,
+				text,
+				isProtected,
+				modelId: this.api.getModel().id,
+			})
 		}
 
 		let timeouts: NodeJS.Timeout[] = []
@@ -1364,6 +1390,7 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 						images,
 						partial,
 						contextCondense,
+						modelId: this.api.getModel().id,
 					})
 				}
 			} else {
@@ -1401,6 +1428,7 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 						text,
 						images,
 						contextCondense,
+						modelId: this.api.getModel().id,
 					})
 				}
 			}
@@ -1424,6 +1452,7 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 				images,
 				checkpoint,
 				contextCondense,
+				modelId: this.api.getModel().id,
 			})
 		}