docs: add provider hub and model provider pages

docs/providers/glm.md

@@ -0,0 +1,31 @@
+---
+summary: "GLM model family overview + how to use it in Clawdbot"
+read_when:
+  - You want GLM models in Clawdbot
+  - You need the model naming convention and setup
+---
+# GLM models
+
+GLM is a **model family** (not a company) available through the Z.AI platform. In Clawdbot, GLM
+models are accessed via the `zai` provider and model IDs like `zai/glm-4.7`.
+
+## CLI setup
+
+```bash
+clawdbot onboard --auth-choice zai-api-key
+```
+
+## Config snippet
+
+```json5
+{
+  env: { ZAI_API_KEY: "sk-..." },
+  agents: { defaults: { model: { primary: "zai/glm-4.7" } } }
+}
+```
+
+## Notes
+
+- GLM versions and availability can change; check Z.AI's docs for the latest.
+- Example model IDs include `glm-4.7` and `glm-4.6`.
+- For provider details, see [/providers/zai](/providers/zai).