docs(methods): align codeChannels README descriptions with the API reference

Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>

Author: zimeg

methods/README.md

@@ -22,13 +22,13 @@ $ slack run chat_post_message  # Make the request
 
 ### codeChannels
 
-- **[codeChannels.archive](https://docs.slack.dev/reference/methods/codeChannels.archive)**: Archives a code channel, optionally recording a summary message. [Implementation](./src/code_channels/code_channels_archive.py).
-- **[codeChannels.create](https://docs.slack.dev/reference/methods/codeChannels.create)**: Creates a code channel for a session. [Implementation](./src/code_channels/code_channels_create.py).
-- **[codeChannels.getCanvas](https://docs.slack.dev/reference/methods/codeChannels.getCanvas)**: Reads a code channel canvas's content and its comment threads. [Implementation](./src/code_channels/code_channels_get_canvas.py).
+- **[codeChannels.archive](https://docs.slack.dev/reference/methods/codeChannels.archive)**: Archives a code channel, optionally recording a summary message on the channel. [Implementation](./src/code_channels/code_channels_archive.py).
+- **[codeChannels.create](https://docs.slack.dev/reference/methods/codeChannels.create)**: Creates a dedicated code channel for an agent session. [Implementation](./src/code_channels/code_channels_create.py).
+- **[codeChannels.getCanvas](https://docs.slack.dev/reference/methods/codeChannels.getCanvas)**: Fetches a canvas attached to a code channel — full content plus comment threads — in a single round-trip. [Implementation](./src/code_channels/code_channels_get_canvas.py).
 - **[codeChannels.listViews](https://docs.slack.dev/reference/methods/codeChannels.listViews)**: Lists the view tabs attached to a code channel. [Implementation](./src/code_channels/code_channels_list_views.py).
-- **[codeChannels.removeView](https://docs.slack.dev/reference/methods/codeChannels.removeView)**: Removes a view tab from a code channel. [Implementation](./src/code_channels/code_channels_remove_view.py).
+- **[codeChannels.removeView](https://docs.slack.dev/reference/methods/codeChannels.removeView)**: Removes a view from a code channel. [Implementation](./src/code_channels/code_channels_remove_view.py).
 - **[codeChannels.rename](https://docs.slack.dev/reference/methods/codeChannels.rename)**: Renames a code channel. [Implementation](./src/code_channels/code_channels_rename.py).
-- **[codeChannels.setCanvasContent](https://docs.slack.dev/reference/methods/codeChannels.setCanvasContent)**: Replaces a code channel canvas's content while preserving comment anchors. [Implementation](./src/code_channels/code_channels_set_canvas_content.py).
-- **[codeChannels.setCommands](https://docs.slack.dev/reference/methods/codeChannels.setCommands)**: Registers the agent's per-channel slash commands for a code channel. [Implementation](./src/code_channels/code_channels_set_commands.py).
-- **[codeChannels.setProperties](https://docs.slack.dev/reference/methods/codeChannels.setProperties)**: Sets a code channel's context bar items and external resource details. [Implementation](./src/code_channels/code_channels_set_properties.py).
-- **[codeChannels.setView](https://docs.slack.dev/reference/methods/codeChannels.setView)**: Publishes a view tab (such as a diff) to a code channel. [Implementation](./src/code_channels/code_channels_set_view.py).
+- **[codeChannels.setCanvasContent](https://docs.slack.dev/reference/methods/codeChannels.setCanvasContent)**: Replaces the full markdown content of a canvas attached to a code channel, preserving the comment threads on the sections your agent didn't change. [Implementation](./src/code_channels/code_channels_set_canvas_content.py).
+- **[codeChannels.setCommands](https://docs.slack.dev/reference/methods/codeChannels.setCommands)**: Registers the set of slash commands your agent offers in a code channel. [Implementation](./src/code_channels/code_channels_set_commands.py).
+- **[codeChannels.setProperties](https://docs.slack.dev/reference/methods/codeChannels.setProperties)**: Sets properties on a code channel: context bar items and external resource details. [Implementation](./src/code_channels/code_channels_set_properties.py).
+- **[codeChannels.setView](https://docs.slack.dev/reference/methods/codeChannels.setView)**: Creates or updates a view in a code channel. Views can render HTML, diffs, Block Kit, or canvases as tabs alongside the conversation. [Implementation](./src/code_channels/code_channels_set_view.py).