docs(drive): add shared drives tip to SKILL.md

Files in shared drives are not returned by default. Adds a 'Shared
Drives' section with supportsAllDrives examples and a tip for agents
to retry with the flag when a file cannot be found.

Author: nuthalapativarun

.changeset/docs-drive-shared-drives-tip.md

@@ -0,0 +1,11 @@
+---
+"@googleworkspace/cli": patch
+---
+
+docs(drive): add shared drives tip to SKILL.md
+
+Files in shared drives are invisible to `files list` and `files get`
+by default. Adds a "Shared Drives" section explaining that agents
+should retry with `supportsAllDrives: true` and
+`includeItemsFromAllDrives: true` when a file search returns no
+results and the user indicates the file is in a shared drive.

skills/gws-drive/SKILL.md

@@ -25,6 +25,20 @@ gws drive <resource> <method> [flags]
 |---------|-------------|
 | [`+upload`](../gws-drive-upload/SKILL.md) | Upload a file with automatic metadata |
 
+## Shared Drives
+
+Files stored in a shared drive are not returned by default. If a file search returns no results, add `supportsAllDrives=true` to your `--params`:
+
+```bash
+# List files across all drives (including shared drives)
+gws drive files list --params '{"q":"name = '\''report.pdf'\''","supportsAllDrives":true,"includeItemsFromAllDrives":true}'
+
+# Get a file that lives in a shared drive
+gws drive files get --params '{"fileId":"FILE_ID","supportsAllDrives":true}'
+```
+
+> **Tip:** If you can't find a file and the user mentions it's in a shared drive, retry the request with `supportsAllDrives: true` and `includeItemsFromAllDrives: true`.
+
 ## API Resources
 
 ### about