15.1 docs: forbidden, unauthorized, and authInterrupts

docs/01-app/03-api-reference/03-file-conventions/forbidden.mdx

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+---
+title: forbidden.js
+description: API reference for the forbidden.js special file.
+related:
+  links:
+    - app/api-reference/functions/unstable_forbidden
+version: unstable
+---
+
+The **forbidden** file is used to render UI when the [`unstable_forbidden`](/docs/app/api-reference/functions/unstable_forbidden) function is invoked during authentication.
+
+## Version History
+
+| Version   | Changes                    |
+| --------- | -------------------------- |
+| `v15.1.0` | `forbidden.js` introduced. |

docs/01-app/03-api-reference/03-file-conventions/unauthorized.mdx

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+---
+title: unauthorized.js
+description: API reference for the unauthorized.js special file.
+related:
+  links:
+    - app/api-reference/functions/unstable_unauthorized
+version: unstable
+---
+
+The **unauthorized** file is used to render UI when the [`unstable_unauthorized`](/docs/app/api-reference/functions/unstable_unauthorized) function is invoked during authentication.
+
+## Version History
+
+| Version   | Changes                       |
+| --------- | ----------------------------- |
+| `v15.1.0` | `unauthorized.js` introduced. |

docs/01-app/03-api-reference/04-functions/unstable_forbidden.mdx

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+---
+title: forbidden
+description: API Reference for the forbidden function.
+version: unstable
+related:
+  links:
+    - app/api-reference/file-conventions/forbidden
+---
+
+The `unstable_forbidden` function allows you to render the [`forbidden.js` file](/docs/app/api-reference/file-conventions/forbidden) during authentication.
+
+## Version History
+
+| Version   | Changes                          |
+| --------- | -------------------------------- |
+| `v15.1.0` | `unstable_forbidden` introduced. |

docs/01-app/03-api-reference/04-functions/unstable_unauthorized.mdx

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+---
+title: unstable_unauthorized
+description: API Reference for the unstable_unauthorized function.
+version: unstable
+related:
+  links:
+    - app/api-reference/file-conventions/unauthorized
+---
+
+The `unstable_unauthorized` function allows you to render the [`unauthorized.js` file](/docs/app/api-reference/file-conventions/unauthorized) during authentication.
+
+## Version History
+
+| Version   | Changes                             |
+| --------- | ----------------------------------- |
+| `v15.1.0` | `unstable_unauthorized` introduced. |