fix: remove unused FileEntry.limit from types and parser

The limit parameter was defined in FileEntry but intentionally ignored by
ReadFileTool since the line limit is controlled by the maxReadFileLine
setting. This removes the unused type field and parsing code to align
the types with actual behavior.

- Remove limit from FileEntry interface in tool-params.ts
- Remove limit parsing from NativeToolCallParser.convertFileEntries()
- Remove limit from FileResult interface in ReadFileTool.ts
- Update comment to remove obsolete limit mention

packages/types/src/tool-params.ts

@@ -27,8 +27,6 @@ export interface FileEntry {
 	path: string
 	/** 1-indexed line number to start reading from (default: 1) */
 	offset?: number
-	/** Maximum number of lines to return (default: 2000) */
-	limit?: number
 	/** Reading mode: "slice" for simple reading, "indentation" for smart block extraction */
 	mode?: ReadMode
 	/** Configuration for indentation mode */

src/core/assistant-message/NativeToolCallParser.ts

@@ -315,14 +315,6 @@ export class NativeToolCallParser {
 				}
 			}
 
-			// Map limit parameter
-			if (file.limit !== undefined) {
-				const limit = Number(file.limit)
-				if (!isNaN(limit) && limit > 0) {
-					entry.limit = limit
-				}
-			}
-
 			// Map mode parameter
 			if (file.mode === "slice" || file.mode === "indentation") {
 				entry.mode = file.mode

src/core/tools/ReadFileTool.ts

@@ -37,7 +37,6 @@ interface FileResult {
 	notice?: string
 	// Slice/indentation mode parameters
 	offset?: number
-	limit?: number
 	mode?: ReadMode
 	indentation?: IndentationConfig
 	xmlContent?: string
@@ -105,7 +104,7 @@ export class ReadFileTool extends BaseTool<"read_file"> {
 		const fileResults: FileResult[] = fileEntries.map((entry) => ({
 			path: entry.path,
 			status: "pending",
-			// Map slice/indentation mode parameters (limit is not mapped - always use maxReadFileLine setting)
+			// Map slice/indentation mode parameters
 			offset: entry.offset,
 			mode: entry.mode,
 			indentation: entry.indentation,