test(sdk-app): cover default profile configuration

The startup test helper always constructed an explicit sdk profile, so coverage never exercised apply's supported default-config path even though runtime behavior depended on it.\n\nPass Config objects through the helper and default them to an empty config. The existing startup and help tests now prove sdk defaulting, while the explicit sdk-minimal case remains covered.

packages/bundle/sdk-app/tests/startup.spec.ts

@@ -4,7 +4,7 @@ import { EventEmitter } from 'node:events'
 import { Context } from '@deepseek-ai/cordis'
 import { afterEach, describe, expect, it } from 'vitest'
 import { internals, provideCmdline } from '@deepseek-ai/dsh-cmdline'
-import { apply, SDK_APP_STARTUP_SERVICE } from '../src/index.ts'
+import { apply, type Config, SDK_APP_STARTUP_SERVICE } from '../src/index.ts'
 
 /** Controllable stdin for one startup invocation. */
 class TestStdin extends EventEmitter {
@@ -27,7 +27,7 @@ afterEach(() => {
 })
 
 /** Run the provider with captured command output and exit requests. */
-function start(args: string[], profile = 'sdk'): { ctx: Context; exits: number[]; out: () => string; stdin: TestStdin } {
+function start(args: string[], config: Config = {}): { ctx: Context; exits: number[]; out: () => string; stdin: TestStdin } {
   const ctx = new Context()
   const exits: number[] = []
   const stdin = new TestStdin()
@@ -41,7 +41,7 @@ function start(args: string[], profile = 'sdk'): { ctx: Context; exits: number[]
     exit: code => void exits.push(code),
     ready: { onReady: (listener) => { listener(); return () => {} } },
   })
-  apply(ctx, { profile })
+  apply(ctx, config)
   return { ctx, exits, out: () => out, stdin }
 }
 
@@ -64,7 +64,7 @@ describe('SDK app startup', () => {
   })
 
   it('renders the selected SDK profile name in help', () => {
-    const { out } = start(['--help'], 'sdk-minimal')
+    const { out } = start(['--help'], { profile: 'sdk-minimal' })
     expect(out()).toContain('Usage: dsh --profile sdk-minimal')
     expect(out()).toContain('dsh --profile sdk-minimal')
   })