docs: Mintlify MDX docs + docs.json; bump Speakeasy to 1.787.0 (#382)

docs/components/baseinputsroleunion.mdx

@@ -0,0 +1,30 @@
+---
+title: "BaseInputsRoleUnion"
+---
+
+## Supported Types
+
+### `components.BaseInputsRoleUser`
+
+```python
+value: components.BaseInputsRoleUser = /* values here */
+```
+
+### `components.BaseInputsRoleSystem`
+
+```python
+value: components.BaseInputsRoleSystem = /* values here */
+```
+
+### `components.BaseInputsRoleAssistant`
+
+```python
+value: components.BaseInputsRoleAssistant = /* values here */
+```
+
+### `components.BaseInputsRoleDeveloper`
+
+```python
+value: components.BaseInputsRoleDeveloper = /* values here */
+```
+