fix(web): align core profile with RL prompt

apps/cli/tests/web-prompt-context.spec.ts

@@ -1,18 +1,26 @@
 import { sep } from 'node:path'
 import { Context } from 'cordis'
 import { describe, expect, it } from 'vitest'
+import Loader from '@cordisjs/plugin-loader'
 import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import { HARNESS_SOURCE_SECTION } from '@deepseek-ai/dsh-app-boot'
 import type {} from '@deepseek-ai/dsh-host-webserver'
 import { prepareWebRuntimeContext } from '../src/web.ts'
 
 describe('prepareWebRuntimeContext', () => {
-  it('installs both sections before a later systemPrompt consumer activates', async () => {
+  it('registers the config-tree builtin that installs both prompt sections', async () => {
     const ctx = new Context()
     const sourceRoot = `${sep}opt${sep}harness-src`
     let observedSections: { name: string; text: string }[] | undefined
     try {
+      await ctx.plugin(Loader)
       prepareWebRuntimeContext(ctx, sourceRoot, 'production')
+      expect(() => {
+        prepareWebRuntimeContext(ctx, sourceRoot, 'production')
+      }).toThrow(
+        'Loader builtin "web-runtime-context" is already registered',
+      )
+      await ctx.loader.create({ name: 'cordis:web-runtime-context' })
       ctx.provide('httpServer', { port: 3080 } as Context['httpServer'])
       const consumer = ctx.inject(['systemPrompt'], async (promptCtx) => {
         const assembly = await promptCtx.systemPrompt.assemble()