fix: resolve apiProxy via ctx.get for /model (v0.3.2)

Cordis throws on ctx.apiProxy without inject; use ctx.get and declare apiProxy inject so catalog and model APIs work under dsh web.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/apiproxy.test.ts

@@ -0,0 +1,25 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import { resolveApiProxy } from '../src/apiproxy.ts'
+
+test('resolveApiProxy uses ctx.get and avoids bare ctx.apiProxy', () => {
+  const api = { sessions: {} }
+  let touchedBare = false
+  const ctx = {
+    get(name: string) {
+      return name === 'apiProxy' ? api : undefined
+    },
+    get apiProxy() {
+      touchedBare = true
+      throw new Error('cannot get property "apiProxy" without inject')
+    },
+  }
+  assert.equal(resolveApiProxy(ctx as any), api)
+  assert.equal(touchedBare, false)
+})
+
+test('resolveApiProxy falls back to own-property mock', () => {
+  const api = { sessions: {} }
+  const ctx = { apiProxy: api }
+  assert.equal(resolveApiProxy(ctx as any), api)
+})