chore: import upstream snapshot with attribution

apps/sim/lib/copilot/request/session/explicit-abort.ts

@@ -0,0 +1,68 @@
+import type { Context } from '@opentelemetry/api'
+import { TraceAttr } from '@/lib/copilot/generated/trace-attributes-v1'
+import { fetchGo } from '@/lib/copilot/request/go/fetch'
+import { AbortReason } from '@/lib/copilot/request/session/abort'
+import { getMothershipBaseURL, getMothershipSourceEnvHeaders } from '@/lib/copilot/server/agent-url'
+import { env } from '@/lib/core/config/env'
+
+export const DEFAULT_EXPLICIT_ABORT_TIMEOUT_MS = 3000
+
+export async function requestExplicitStreamAbort(params: {
+  streamId: string
+  userId: string
+  chatId?: string
+  workspaceId?: string
+  timeoutMs?: number
+  otelContext?: Context
+}): Promise<void> {
+  const {
+    streamId,
+    userId,
+    chatId,
+    workspaceId,
+    timeoutMs = DEFAULT_EXPLICIT_ABORT_TIMEOUT_MS,
+    otelContext,
+  } = params
+
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  }
+  if (env.COPILOT_API_KEY) {
+    headers['x-api-key'] = env.COPILOT_API_KEY
+  }
+  Object.assign(headers, getMothershipSourceEnvHeaders())
+
+  const controller = new AbortController()
+  const timeout = setTimeout(
+    () => controller.abort(AbortReason.ExplicitAbortFetchTimeout),
+    timeoutMs
+  )
+
+  try {
+    const mothershipBaseURL = await getMothershipBaseURL({ userId })
+    const response = await fetchGo(`${mothershipBaseURL}/api/streams/explicit-abort`, {
+      method: 'POST',
+      headers,
+      signal: controller.signal,
+      body: JSON.stringify({
+        messageId: streamId,
+        userId,
+        ...(chatId ? { chatId } : {}),
+        ...(workspaceId ? { workspaceId } : {}),
+      }),
+      otelContext,
+      spanName: 'sim → go /api/streams/explicit-abort',
+      operation: 'explicit_abort',
+      attributes: {
+        [TraceAttr.StreamId]: streamId,
+        ...(chatId ? { [TraceAttr.ChatId]: chatId } : {}),
+      },
+    })
+
+    if (!response.ok) {
+      throw new Error(`Explicit abort marker request failed: ${response.status}`)
+    }
+  } finally {
+    clearTimeout(timeout)
+  }
+}