Add ez-assistant and kerberos service folders

docker-compose/ez-assistant/docs/providers/openai.md

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+---
+summary: "Use OpenAI via API keys or Codex subscription in Moltbot"
+read_when:
+  - You want to use OpenAI models in Moltbot
+  - You want Codex subscription auth instead of API keys
+---
+# OpenAI
+
+OpenAI provides developer APIs for GPT models. Codex supports **ChatGPT sign-in** for subscription
+access or **API key** sign-in for usage-based access. Codex cloud requires ChatGPT sign-in.
+
+## Option A: OpenAI API key (OpenAI Platform)
+
+**Best for:** direct API access and usage-based billing.
+Get your API key from the OpenAI dashboard.
+
+### CLI setup
+
+```bash
+moltbot onboard --auth-choice openai-api-key
+# or non-interactive
+moltbot onboard --openai-api-key "$OPENAI_API_KEY"
+```
+
+### Config snippet
+
+```json5
+{
+  env: { OPENAI_API_KEY: "sk-..." },
+  agents: { defaults: { model: { primary: "openai/gpt-5.2" } } }
+}
+```
+
+## Option B: OpenAI Code (Codex) subscription
+
+**Best for:** using ChatGPT/Codex subscription access instead of an API key.
+Codex cloud requires ChatGPT sign-in, while the Codex CLI supports ChatGPT or API key sign-in.
+
+### CLI setup
+
+```bash
+# Run Codex OAuth in the wizard
+moltbot onboard --auth-choice openai-codex
+
+# Or run OAuth directly
+moltbot models auth login --provider openai-codex
+```
+
+### Config snippet
+
+```json5
+{
+  agents: { defaults: { model: { primary: "openai-codex/gpt-5.2" } } }
+}
+```
+
+## Notes
+
+- Model refs always use `provider/model` (see [/concepts/models](/concepts/models)).
+- Auth details + reuse rules are in [/concepts/oauth](/concepts/oauth).