[zimeg]

Summary

This pull request adds a canvases family of Web API method examples under methods/src/canvases/.

• canvases.create creates a canvas with a title and document_content.
• canvases.getContent reads a canvas as markdown.
• The manifest requests only the canvases:read and canvases:write bot scopes.
• The methods README lists the new family.

Arguments and values follow the canvases.create and canvases.getContent reference pages.

Dependency, stays DRAFT

This confirms an unreleased SDK change: slackapi/python-slack-sdk#1999 adds the canvases_getContent method.

The methods typecheck fails until canvases_getContent is in a release. This stays a draft until it ships in a slack_sdk release and slack_sdk is bumped here.

Testing

1. cd methods/src/canvases and run slack install --environment local.
2. Export a bot token as SLACK_TOKEN.
3. Run slack run canvases_create.py and confirm the response is ok with a canvas_id.
4. Replace F1234ABCD in canvases_get_content.py with the returned canvas_id, run slack run canvases_get_content.py, and confirm the content is the canvas markdown.

🤖 Generated with Claude Code