FIXED · Gateway :9089 provider routing
token-proxy.js — doubled version segment in every upstream URL
Bases already ended in /v1 (or /v4, /v1beta) while clients call /{provider}/v1/… → built /v1/v1/… and 7 of 8 providers 404'd. Verified with real keys: OpenRouter + Zhipu return real completions. DeepSeek 402 (needs funds), Google 429 (needs credits), 4 others have no key.