Function connection

packages/opencode/test/acp/usage.test.ts:122–127

(updates: SessionNotification[])

  ])

const connection = (updates: SessionNotification[]) => ({
  sessionUpdate(params: SessionNotification) {
    updates.push(params)
    return Promise.resolve()
  },
})

describe("acp usage", () => {
  test("builds ACP Usage from assistant token shape", () => {