refactor(tools): consolidated directory listing functionality from ls tool into read tool

- Consolidated directory listing functionality from dedicated `ls` tool into the `read` tool.
- Removed the `ls` tool and all related exports, types, and configurations from the public API.
- Updated `read` tool to return formatted directory listings with modification times instead of redirecting to `ls` tool.
- Removed `bashInterceptor.simpleLs` setting and related interception logic from bash tool.
- Removed `ls.enabled` setting and related tool registration logic.
- Removed test cases for the `ls` tool and updated tool type definitions to remove `LsToolResultEvent`.

packages/coding-agent/src/tools/bash-interceptor.ts

@@ -103,27 +103,3 @@ export function checkBashInterception(
 
 	return { block: false };
 }
-
-/**
- * Check if a command is a simple directory listing that should use `ls` tool.
- * Only applies to bare `ls` without complex flags.
- */
-export function checkSimpleLsInterception(command: string, availableTools: string[]): InterceptionResult {
-	if (!availableTools.includes("ls")) {
-		return { block: false };
-	}
-
-	// Match simple ls commands (ls, ls -la, ls /path, etc.)
-	// Don't intercept complex pipes or commands
-	const simpleLsPattern = /^\s*ls(\s+(-[a-zA-Z]+\s*)*)?(\s+[^|;&]+)?\s*$/;
-
-	if (simpleLsPattern.test(command.trim())) {
-		return {
-			block: true,
-			message: `Use the \`ls\` tool instead of bash ls. It provides structured output.\n\nOriginal command: ${command}`,
-			suggestedTool: "ls",
-		};
-	}
-
-	return { block: false };
-}