xpander just raised $7.5M for the least fashionable position in enterprise AI. Neutrality. Every major lab wants to be your entire stack, model, harness, and apps included. Meanwhile teams inside enterprises are already running agents on their own, with or without approval. xpander's pitch is a governed layer that stays agnostic underneath. Any model, frontier or your own fine-tunes, any framework, running in your cloud or fully air-gapped, with per-user permissions and every tool call…