Remove write, DM, and cookie marketing from public docs.

Keep public copy focused on API-key reads across README, skills, and guides.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: lanbytes

CONTRIBUTING.md

@@ -4,7 +4,7 @@ This repository is the TwexAPI n8n community node.
 
 - Open an issue for bugs, missing operations, or docs mistakes.
 - Keep PRs small. Do not add endpoints that are not in the live REST API.
-- Do not commit API keys, cookies, or `.env` files.
-- Public reads use `Authorization: Bearer`. Writes and private DM reads stay out of this node.
+- Do not commit API keys, credentials, or `.env` files.
+- Public reads use `Authorization: Bearer`. This package documents public API-key reads only.
 
 Questions: open a GitHub issue or use the [TwexAPI dashboard](https://twexapi.io/dashboard).