fix(setup): honour required when the docker app fails to launch

db.ts and redis.ts call ensureDocker(false) and branch on the boolean to
offer an external Postgres or Redis instead. Throwing past that aborts the
whole wizard when a working non-Docker path was on the table, so every
post-confirm failure now warns and returns false unless Docker is required.

That covers the 90s-timeout throw too, which ignored `required` before this
branch existed — leaving it as the one path that still aborts would make
the flag mean two different things in one function.

Also name DOCKER_CONTEXT in the stale-selection hint. It overrides the
config context, so `docker context use` alone leaves the CLI pointed at
OrbStack and the next run fails identically.

Author: waleedlatif1

scripts/setup/docker.ts

@@ -87,6 +87,17 @@ function startDockerApp({ app, explicit }: DockerChoice): DockerApp | null {
   return openApp(other) ? other : null
 }
 
+/**
+ * A launch that failed after the user opted into it. Callers passing
+ * required=false have a non-Docker path to offer, so the reason is worth
+ * surfacing but must not abort the wizard.
+ */
+function launchFailed(required: boolean, message: string, hints: string[]): boolean {
+  if (required) throw new SetupError(message, hints)
+  p.log.warn([message, ...hints].join('\n'))
+  return false
+}
+
 /**
  * Returns whether the Docker daemon is available, offering to launch the
  * installed docker app (macOS) when it's stopped. Never installs anything.
@@ -126,21 +137,20 @@ export async function ensureDocker(required: boolean): Promise<boolean> {
 
   const app = startDockerApp(choice)
   if (!app) {
-    if (choice.explicit) {
-      throw new SetupError('The docker CLI is pointed at OrbStack, which is not installed.', [
-        `reinstall it: ${theme.command('brew install orbstack')}`,
-        `or point the CLI elsewhere: unset DOCKER_HOST / ${theme.command('docker context use <name>')}`,
-      ])
-    }
-    throw new SetupError('No docker app is installed.', INSTALL_HINTS)
+    return choice.explicit
+      ? launchFailed(required, 'The docker CLI is pointed at OrbStack, which is not installed.', [
+          `reinstall it: ${theme.command('brew install orbstack')}`,
+          `or point the CLI elsewhere: unset DOCKER_HOST and DOCKER_CONTEXT, then ${theme.command('docker context use <name>')}`,
+        ])
+      : launchFailed(required, 'No docker app is installed.', INSTALL_HINTS)
   }
 
   const spin = p.spinner()
   spin.start(`Waiting for the Docker daemon (${app.name})…`)
   const up = await waitFor(async () => daemonUp(), 90_000, 2000)
   spin.stop(up ? 'Docker is running' : `${glyph.fail} daemon did not come up`)
   if (!up) {
-    throw new SetupError(`${app.name} did not start within 90s.`, [
+    return launchFailed(required, `${app.name} did not start within 90s.`, [
       app === ORBSTACK_APP
         ? 'open OrbStack manually once to finish its first-run setup, then re-run'
         : 'first-ever launch needs a GUI license acceptance — open Docker Desktop manually once, then re-run',