fix: recover failed task launches safely (#3437)

apps/web/components/task/task-launch-error-context.tsx

@@ -1,16 +1,9 @@
 "use client";
 
-import { createContext, useContext, useEffect, useMemo, useRef, type ReactNode } from "react";
-import { useToast } from "@/components/toast-provider";
-import { t } from "@/lib/i18n";
-import { getSessionStorage, setSessionStorage } from "@/lib/local-storage";
+import { createContext, useContext, useMemo, type ReactNode } from "react";
 import type { TaskRepository } from "@/lib/types/http";
 import type { TaskStatusSummary } from "@/lib/types/task-status-summary";
 import { useTaskStatusSummary } from "@/hooks/domains/task/use-task-status-summary";
-import { isTypedTaskLaunchError } from "./simple/components/task-launch-error-entry";
-
-// i18n-exempt: persisted browser storage key, not user-facing copy.
-const LAUNCH_ERROR_TOASTS_KEY = "kandev.task-launch-error-toasts";
 
 export type TaskLaunchErrorContextValue = {
   taskId: string;
@@ -28,39 +21,8 @@ export function TaskLaunchErrorProvider({
   value: TaskLaunchErrorContextValue;
   children: ReactNode;
 }) {
-  const { toast } = useToast();
-  const shownToastStampsRef = useRef(new Set<string>());
   const statusSummary = useTaskStatusSummary(value.taskId, value.statusSummary);
 
-  useEffect(() => {
-    const activeError = statusSummary?.active_error;
-    if (!isTypedTaskLaunchError(activeError)) return;
-
-    const localStamp = `${value.taskId}:${activeError.stamp}`;
-    if (shownToastStampsRef.current.has(localStamp)) return;
-    const shownByTask = getSessionStorage<Record<string, string[]>>(LAUNCH_ERROR_TOASTS_KEY, {});
-    if ((shownByTask[value.taskId] ?? []).includes(activeError.stamp)) {
-      shownToastStampsRef.current.add(localStamp);
-      return;
-    }
-
-    shownToastStampsRef.current.add(localStamp);
-    setSessionStorage(LAUNCH_ERROR_TOASTS_KEY, {
-      ...shownByTask,
-      [value.taskId]: [...(shownByTask[value.taskId] ?? []), activeError.stamp].slice(-20),
-    });
-    toast({
-      title: t("task:taskFailedToStart"),
-      description: t("task:launchFailedSeeDetails"),
-      variant: "error",
-    });
-  }, [
-    statusSummary?.active_error?.category,
-    statusSummary?.active_error?.stamp,
-    toast,
-    value.taskId,
-  ]);
-
   const contextValue = useMemo(() => ({ ...value, statusSummary }), [statusSummary, value]);
   return (
     <TaskLaunchErrorContext.Provider value={contextValue}>