Automated documentation update [skip ci] (#261)

Author: github-actions[bot]

src/add-script/README.md

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+
+# add-script (add-script)
+
+Add a script from a URL or inline text to /usr/local/bin during devcontainer build
+
+## Example Usage
+
+```json
+"features": {
+    "ghcr.io/devcontainer-community/devcontainer-features/add-script:1": {}
+}
+```
+
+## Options
+
+| Options Id | Description | Type | Default Value |
+|-----|-----|-----|-----|
+| name | Name for the script placed in /usr/local/bin. | string | - |
+| url | URL of a script to download. | string | - |
+| script | Inline script text to add. | string | - |
+
+# add-script
+
+## Project
+
+_No upstream project — this is a utility feature._
+
+## Description
+
+A utility feature that adds a custom script to `/usr/local/bin` during devcontainer build. Accepts either a URL pointing to a script to download, or an inline script supplied directly as text. The script is placed at `/usr/local/bin/<name>` and made executable, but is **not** executed during install. Exactly one of `url` or `script` must be provided along with a `name`.
+
+## Installation Method
+
+No binary is installed. The feature downloads (via `wget` or `curl`) or writes the provided script to `/usr/local/bin/<name>` and sets its permissions to executable (`755`). If neither `wget` nor `curl` is available, `curl` is installed automatically via `apt`.
+
+## Other Notes
+
+- If both `url` and `script` are provided the feature fails with an error.
+- If neither `url` nor `script` is provided, or if `name` is not provided, the feature exits successfully without doing anything.
+- The script is **not** executed during the devcontainer build — it is only placed at the target path for later use.
+
+
+---
+
+_Note: This file was auto-generated from the [devcontainer-feature.json](https://github.com/devcontainer-community/devcontainer-features/blob/main/src/add-script/devcontainer-feature.json).  Add additional notes to a `NOTES.md`._