refactor: consolidate duplicate utility functions (#12439)

* refactor: consolidate duplicate utility functions

- Add escapeRegExp to src/utils.ts and remove 10 local duplicates
- Rename bash-tools clampNumber to clampWithDefault (different signature)
- Centralize formatError calls to use formatErrorMessage from infra/errors.ts
- Re-export formatErrorMessage from cli/cli-utils.ts to preserve API

* refactor: consolidate remaining escapeRegExp duplicates

* refactor: consolidate sleep, stripAnsi, and clamp duplicates

extensions/zalouser/src/zca.ts

@@ -1,4 +1,5 @@
 import { spawn, type SpawnOptions } from "node:child_process";
+import { stripAnsi } from "openclaw/plugin-sdk";
 import type { ZcaResult, ZcaRunOptions } from "./types.js";
 
 const ZCA_BINARY = "zca";
@@ -107,11 +108,6 @@ export function runZcaInteractive(args: string[], options?: ZcaRunOptions): Prom
   });
 }
 
-function stripAnsi(str: string): string {
-  // oxlint-disable-next-line no-control-regex
-  return str.replace(/\x1B\[[0-9;]*[a-zA-Z]/g, "");
-}
-
 export function parseJsonOutput<T>(stdout: string): T | null {
   try {
     return JSON.parse(stdout) as T;