cleanup: remove unused readTaskMessages helper

The `readTaskMessages` function and its corresponding file have been removed.

This function is now redundant because all access to the cline message history is handled by the atomic `modifyClineMessages` method. This method reads the message file within its `safeWriteJson` transaction, performs the modification, and writes the result. A separate, non-transactional read function is therefore unnecessary and has been removed to simplify the codebase.

Signed-off-by: Eric Wheeler <[email protected]>

Author: Eric Wheeler

src/core/task-persistence/index.ts

@@ -1,3 +1,2 @@
 export { readApiMessages } from "./apiMessages"
-export { readTaskMessages } from "./taskMessages"
 export { taskMetadata } from "./taskMetadata"

src/core/task-persistence/taskMessages.ts

@@ -78,7 +78,7 @@ import { truncateConversationIfNeeded } from "../sliding-window"
 import { ClineProvider } from "../webview/ClineProvider"
 import { MultiSearchReplaceDiffStrategy } from "../diff/strategies/multi-search-replace"
 import { MultiFileSearchReplaceDiffStrategy } from "../diff/strategies/multi-file-search-replace"
-import { readApiMessages, readTaskMessages, taskMetadata } from "../task-persistence"
+import { readApiMessages, taskMetadata } from "../task-persistence"
 import { getEnvironmentDetails } from "../environment/getEnvironmentDetails"
 import {
 	type CheckpointDiffOptions,