# Documents API

Documents are uploaded files linked to a study module. Text is automatically extracted on upload.

## Supported Formats

PDF, Word (.docx), PowerPoint (.pptx), Excel (.xlsx), Images (.png/.jpg via OCR), Markdown (.md), Text (.txt)

## Endpoints

### `GET /api/modules/{id}/documents`
Returns all documents in a module.

### `POST /api/modules/{id}/documents`
Upload a file. The parser service automatically extracts text.

### `DELETE /api/documents/{id}`
Delete a document and its file from storage.

## Source Code
```{eval-rst}
.. automodule:: backend.api.documents
   :members:
```