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

test/helpers/envelope-timestamp.ts

@@ -3,6 +3,8 @@ import {
   formatZonedTimestamp,
 } from "../../src/infra/format-time/format-datetime.js";
 
+export { escapeRegExp } from "../../src/utils.js";
+
 type EnvelopeTimestampZone = string;
 
 export function formatEnvelopeTimestamp(date: Date, zone: EnvelopeTimestampZone = "utc"): string {
@@ -36,7 +38,3 @@ export function formatEnvelopeTimestamp(date: Date, zone: EnvelopeTimestampZone
 export function formatLocalEnvelopeTimestamp(date: Date): string {
   return formatEnvelopeTimestamp(date, "local");
 }
-
-export function escapeRegExp(value: string): string {
-  return value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
-}

test/helpers/normalize-text.ts

@@ -1,32 +1,4 @@
-function stripAnsi(input: string): string {
-  let out = "";
-  for (let i = 0; i < input.length; i++) {
-    const code = input.charCodeAt(i);
-    if (code !== 27) {
-      out += input[i];
-      continue;
-    }
-
-    const next = input[i + 1];
-    if (next !== "[") {
-      continue;
-    }
-    i += 1;
-
-    while (i + 1 < input.length) {
-      i += 1;
-      const c = input[i];
-      if (!c) {
-        break;
-      }
-      const isLetter = (c >= "A" && c <= "Z") || (c >= "a" && c <= "z") || c === "~";
-      if (isLetter) {
-        break;
-      }
-    }
-  }
-  return out;
-}
+import { stripAnsi } from "../../src/terminal/ansi.js";
 
 export function normalizeTestText(input: string): string {
   return stripAnsi(input)

test/helpers/poll.ts

@@ -1,12 +1,10 @@
+import { sleep } from "../../src/utils.js";
+
 export type PollOptions = {
   timeoutMs?: number;
   intervalMs?: number;
 };
 
-function sleep(ms: number) {
-  return new Promise<void>((resolve) => setTimeout(resolve, ms));
-}
-
 export async function pollUntil<T>(
   fn: () => Promise<T | null | undefined>,
   opts: PollOptions = {},