feat(code of conduct): add a comprehensive Code of Conduct for community interactions

Author: jnton

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+This Code of Conduct describes how we expect people to behave in spaces run by Yourself To Science™.
+
+Our goal is simple: build the world’s simplest way for anyone, anywhere, to contribute to science. To do that, we need community spaces that stay focused on science, data, and useful discussion — not on personal attacks or unrelated fights.
+
+This Code applies to all interactions in official Yourself To Science spaces, including GitHub issues and pull requests, project discussions, and any other channels listed in the documentation.
+
+## Canon 1 – Integrity
+
+- Do not misrepresent data, sources, or your own role or expertise.
+- Make a clear distinction between evidence, opinion, and speculation when you contribute.
+- You are welcome to share tools, services, or resources you are involved with, as long as they are relevant and discussed on their merits.
+
+## Canon 2 – Conduct in Community Spaces
+
+- Do not harass, threaten, or deliberately intimidate anyone.
+- Do not use personal attacks, slurs, or targeted insults.
+- Keep discussion roughly on-topic for this initiative and the specific thread (issues, pull requests, or discussions).
+- Do not use project spaces to provide personalised medical advice or to ask others for diagnoses or treatment decisions.
+
+## Canon 3 – Collaboration and Review
+
+- Focus comments and reviews on ideas, data, and code — not on personal characteristics.
+- When you disagree, explain why in clear terms and, where possible, point to evidence or alternatives.
+- Maintainers may close or redirect threads that become repetitive, off-topic, or hostile.
+
+## Canon 4 – Use of the Yourself To Science’s Name and Infrastructure
+
+- Do not present unofficial work as if it were an official part of Yourself To Science.
+- Do not use project spaces to run unrelated political campaigns or personal attacks.
+- Do not claim project endorsement for products, services, or organizations without explicit permission from the maintainers.
+
+## Canon 5 – External Opinions and Politics
+
+- You are free to hold and express any views elsewhere. In project spaces, keep discussion tied to Yourself To Science’s purpose: helping people discover and evaluate ways to contribute to science.
+- Avoid importing external political or cultural fights into project channels when they are not directly relevant to the work.
+
+## Canon 6 – Reporting and Consequences
+
+If you believe this Code of Conduct has been violated in project spaces, you can report it by contacting the maintainers at [email protected] or via the channels listed in the project documentation.
+
+Maintainers may respond to violations in one or more of the following ways, depending on severity and context:
+
+- Clarifying expectations in the relevant thread.
+- A private or public warning.
+- Limiting or removing a person’s ability to participate in some or all project spaces.
+
+Maintainers should not retaliate against anyone who reports a concern in good faith.