openai-consumer: the static-key model-access consumer (ADR 0050)

The consumer half of the OTHER model-access shape. Where anthropic-consumer
receives a refreshed access token, this receives one operator-supplied API key
the mesh sealed to it and the host unsealed at its secret path — no manager, no
refresh, no usage. It writes the key where an OpenAI/Codex client reads it: an
OPENAI_API_KEY env file and the publicly-known Codex auth.json. Pure node, no
SDK import — the simplest a model-access consumer gets.

Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF

modules/openai-consumer/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "@novox/module-openai-consumer",
+  "version": "0.1.0",
+  "description": "openai-consumer — the consumer side of model-access for a STATIC-KEY vendor (ADR 0050): writes the delivered OpenAI API key where an OpenAI/Codex client reads it (OPENAI_API_KEY env + the Codex auth.json). No manager, no refresh, no usage — the static-key half of the same interface.",
+  "type": "module",
+  "private": true,
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.6.0"
+  }
+}