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

src/web/reconnect.ts

@@ -2,6 +2,7 @@ import { randomUUID } from "node:crypto";
 import type { OpenClawConfig } from "../config/config.js";
 import type { BackoffPolicy } from "../infra/backoff.js";
 import { computeBackoff, sleepWithAbort } from "../infra/backoff.js";
+import { clamp } from "../utils.js";
 
 export type ReconnectPolicy = BackoffPolicy & {
   maxAttempts: number;
@@ -16,8 +17,6 @@ export const DEFAULT_RECONNECT_POLICY: ReconnectPolicy = {
   maxAttempts: 12,
 };
 
-const clamp = (val: number, min: number, max: number) => Math.max(min, Math.min(max, val));
-
 export function resolveHeartbeatSeconds(cfg: OpenClawConfig, overrideSeconds?: number): number {
   const candidate = overrideSeconds ?? cfg.web?.heartbeatSeconds;
   if (typeof candidate === "number" && candidate > 0) {