Align terminal stream with snapshot-only attach

packages/app/src/utils/terminal-attach.test.ts

@@ -1,50 +0,0 @@
-import { describe, expect, it } from "vitest";
-
-import {
-  getTerminalAttachRetryDelayMs,
-  isTerminalAttachRetryableError,
-  withPromiseTimeout,
-} from "./terminal-attach";
-
-describe("terminal-attach", () => {
-  it("computes bounded exponential retry delays", () => {
-    expect(getTerminalAttachRetryDelayMs({ attempt: 0 })).toBe(250);
-    expect(getTerminalAttachRetryDelayMs({ attempt: 1 })).toBe(500);
-    expect(getTerminalAttachRetryDelayMs({ attempt: 2 })).toBe(1_000);
-    expect(getTerminalAttachRetryDelayMs({ attempt: 3 })).toBe(2_000);
-    expect(getTerminalAttachRetryDelayMs({ attempt: 8 })).toBe(2_000);
-  });
-
-  it("matches retryable attach errors", () => {
-    expect(isTerminalAttachRetryableError({ message: "Terminal not found while attaching" })).toBe(
-      true,
-    );
-    expect(isTerminalAttachRetryableError({ message: "Network disconnected during attach" })).toBe(
-      true,
-    );
-    expect(isTerminalAttachRetryableError({ message: "stream ended before snapshot" })).toBe(
-      true,
-    );
-    expect(isTerminalAttachRetryableError({ message: "permission denied" })).toBe(false);
-  });
-
-  it("resolves before timeout when promise completes", async () => {
-    await expect(
-      withPromiseTimeout({
-        promise: Promise.resolve("ok"),
-        timeoutMs: 50,
-        timeoutMessage: "timed out",
-      }),
-    ).resolves.toBe("ok");
-  });
-
-  it("rejects when timeout wins", async () => {
-    await expect(
-      withPromiseTimeout({
-        promise: new Promise<string>(() => {}),
-        timeoutMs: 10,
-        timeoutMessage: "timed out",
-      }),
-    ).rejects.toThrow("timed out");
-  });
-});

packages/app/src/utils/terminal-attach.ts

@@ -1,49 +0,0 @@
-const TERMINAL_ATTACH_RETRYABLE_ERROR_PATTERNS = [
-  "terminal not found",
-  "timed out",
-  "timeout",
-  "connection",
-  "network",
-  "disconnected",
-  "stream ended",
-] as const;
-
-export function getTerminalAttachRetryDelayMs(input: { attempt: number }): number {
-  const clampedAttempt = Math.max(0, input.attempt);
-  const exponentialDelay = 250 * 2 ** clampedAttempt;
-  return Math.min(2_000, exponentialDelay);
-}
-
-export function isTerminalAttachRetryableError(input: { message: string }): boolean {
-  const normalized = input.message.toLowerCase();
-  return TERMINAL_ATTACH_RETRYABLE_ERROR_PATTERNS.some((pattern) => normalized.includes(pattern));
-}
-
-export async function waitForDuration(input: { durationMs: number }): Promise<void> {
-  await new Promise<void>((resolve) => {
-    setTimeout(resolve, Math.max(0, input.durationMs));
-  });
-}
-
-export async function withPromiseTimeout<T>(input: {
-  promise: Promise<T>;
-  timeoutMs: number;
-  timeoutMessage: string;
-}): Promise<T> {
-  let timeoutHandle: ReturnType<typeof setTimeout> | null = null;
-  const timeoutPromise = new Promise<never>((_, reject) => {
-    timeoutHandle = setTimeout(
-      () => {
-        reject(new Error(input.timeoutMessage));
-      },
-      Math.max(0, input.timeoutMs),
-    );
-  });
-  try {
-    return await Promise.race([input.promise, timeoutPromise]);
-  } finally {
-    if (timeoutHandle) {
-      clearTimeout(timeoutHandle);
-    }
-  }
-}