docs(kiira): keep express snippets ignored (workspace-shadowed, no @types)

express@5 is a transitive workspace dep without @types, shadowing the
externalPackages cache copy in CI (TS7016). Drop express/@types/express from
externalPackages and re-ignore the two express server snippets.

Author: AlemTuzlak

docs/getting-started/quick-start-server.md

@@ -51,7 +51,7 @@ console.log(text)
 
 Here's an Express server that exposes a streaming chat endpoint using Server-Sent Events:
 
-```typescript
+```typescript ignore
 import express from 'express'
 import { chat, toServerSentEventsResponse } from '@tanstack/ai'
 import { openaiText } from '@tanstack/ai-openai'

docs/getting-started/quick-start-vue.md

@@ -32,7 +32,7 @@ yarn add @tanstack/ai @tanstack/ai-vue @tanstack/ai-openai
 
 Vue apps typically use a separate backend. Here's an Express server that streams chat responses:
 
-```typescript
+```typescript ignore
 import express from 'express'
 import { chat, toServerSentEventsResponse } from '@tanstack/ai'
 import { openaiText } from '@tanstack/ai-openai'

kiira.config.ts

@@ -35,9 +35,10 @@ export default defineConfig({
     valibot: '^1.0.0',
     '@valibot/to-json-schema': '^1.0.0',
     '@modelcontextprotocol/sdk': '^1.29.0',
-    // Server / infra libraries used by real integration examples
-    express: '^5.0.0',
-    '@types/express': '^5.0.0',
+    // Server / infra libraries used by real integration examples.
+    // (express is intentionally NOT declared here: it's already a transitive
+    // dependency in the workspace node_modules without its @types, which
+    // shadows any cache copy — so those two express snippets stay `ignore`d.)
     hono: '^4.0.0',
     '@hono/node-server': '^2.0.0',
     redis: '^6.0.0',