fix(language): LiteLLM gateway never-say — stale endpoints, not piguard

piguard is legitimately in the request path as the reverse proxy; only the
stale endpoint forms (piguard:4000, koala:4000) are wrong. Per brain#6 review
amendment #3 / tapir#18 follow-on.

LANGUAGE.md

@@ -12,7 +12,7 @@
 | AI router | Local-first chain: local Primary → local fallback → external worst-case. | "the API" |
 | BYO-AI fallback | User's own external AI key, used only when local fails; opt-in. Without it, content is never sent externally. | "the default AI" |
 | brain | Persistent homelab knowledge store; in Tapir, one optional HTTP sink (`brain_ingest`), not the filesystem package. | "the database", "the store" |
-| LiteLLM gateway | Local AI gateway (`koala:30401/v1`); the Primary in the AI router. | "piguard", "the cloud" |
+| LiteLLM gateway | Local AI gateway (`koala:30401/v1`); the Primary in the AI router. | "piguard:4000", "koala:4000", "the cloud" |
 | connection | A connected video account a user authorizes via OAuth; subscriptions hang off it. | "login", "session" |
 
 ## Caveman rubric