fix: address pr-bug-scan validated finding from #6952

throwNodeNotFound() now re-raises AbortError when the shared signal is aborted, so a signal-cancelled node probe no longer launders into 'Node.js not found'; sequential fallback runs.

src/main/ssh/ssh-remote-node-resolution.test.ts

@@ -331,6 +331,25 @@ describe('resolveRemoteNodePath', () => {
     ).rejects.toBe(sessionLimitError)
   })
 
+  it('surfaces an AbortError instead of not-found when the shared signal is aborted', async () => {
+    // Why: in concurrent bootstrap a sibling probe aborts this resolution via
+    // the shared signal. Each strategy catch swallows the injected AbortError,
+    // so without re-raising it here the resolver would launder cancellation
+    // into a fatal "Node.js not found" and defeat the sequential fallback.
+    const controller = new AbortController()
+    const abortError = Object.assign(new Error('SSH operation was cancelled'), {
+      name: 'AbortError'
+    })
+    execCommandMock.mockImplementation(() => {
+      controller.abort()
+      return Promise.reject(abortError)
+    })
+
+    await expect(
+      resolveRemoteNodePath(conn, undefined, { signal: controller.signal })
+    ).rejects.toMatchObject({ name: 'AbortError' })
+  })
+
   it('throws when every candidate across both strategies is below the minimum', async () => {
     execCommandMock
       .mockResolvedValueOnce('/old/node\n') // path probe

src/main/ssh/ssh-remote-node-resolution.ts

@@ -1,5 +1,5 @@
 import type { SshConnection } from './ssh-connection'
-import { shellEscape } from './ssh-connection-utils'
+import { createSshOperationAbortError, shellEscape } from './ssh-connection-utils'
 import type { RemoteHostPlatform } from './ssh-remote-platform'
 import { isWindowsRemoteHost, normalizeWindowsRemotePath } from './ssh-remote-platform'
 import { powerShellCommand } from './ssh-remote-powershell'
@@ -47,7 +47,7 @@ export async function resolveRemoteNodePath(
     return loginShellPath
   }
 
-  throwNodeNotFound()
+  throwNodeNotFound(options)
 }
 
 // Probe the on-disk install directories of every common Node version manager
@@ -245,10 +245,18 @@ async function resolveRemoteWindowsNodePath(
     // Fall through to the shared error below.
   }
 
-  throwNodeNotFound()
+  throwNodeNotFound(options)
 }
 
-function throwNodeNotFound(): never {
+function throwNodeNotFound(options?: RemoteNodeResolutionOptions): never {
+  // Why: when a sibling bootstrap probe aborts this resolution via the shared
+  // signal, the strategy catch-blocks swallow the injected AbortError and fall
+  // through to here. Surfacing "Node.js not found" would launder a cancellation
+  // into a fatal non-session failure, defeating the concurrent-bootstrap
+  // sequential fallback. Re-raise the abort so callers classify it correctly.
+  if (options?.signal?.aborted) {
+    throw createSshOperationAbortError()
+  }
   throw new Error(
     'Node.js not found on remote host. Orca relay requires Node.js 18+. ' +
       'Install Node.js on the remote and try again.'