Add Contributor Covenant code of conduct

[fferreyra]

Summary

Adds a code of conduct to satisfy the DPG application's 9C. Protection from Harassment requirement (application ID 12459): "Interaction is facilitated through GitHub and hence must include a code of conduct or contributors' guide that explains how users and contributors can protect themselves from harassment."

Changes

• New CODE_OF_CONDUCT.md at the repo root, using the Contributor Covenant v2.1 — the template GitHub's own guide (linked by the DPG requirement) recommends.
• Enforcement contact set to the project's existing public address, info@developmentgateway.org (same as README.md).
• GitHub auto-detects a root-level CODE_OF_CONDUCT.md for the repository's community profile; no other files need changes.

Verification

• File renders as valid Markdown; enforcement contact filled in, no template placeholders left.
• After merge, the code of conduct appears in the repo's community profile; the DPG 9C section can then be re-validated.

[Copilot]

Pull request overview

Adds a repository-level Code of Conduct to meet the DPG application’s “Protection from Harassment” requirement, leveraging GitHub’s automatic detection of a root CODE_OF_CONDUCT.md.

Changes:

• Introduces a root-level CODE_OF_CONDUCT.md based on Contributor Covenant v2.1.
• Configures the enforcement reporting contact as info@developmentgateway.org.
• Includes attribution and reference links consistent with the upstream template.

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[jdeanquin-dg]

There are 14 other open PRs besides #4504 — which one did you mean?

No pre-existing file, no conflicts. This is a clean, low-risk documentation PR.

PR #4505: Add Contributor Covenant code of conduct

Author: Fernando Ferreyra · opened today (20:09 UTC) · 1 file added, +132/−0 · mergeable, no CI checks (docs-only, none expected)

What it does: Adds a root-level CODE_OF_CONDUCT.md (standard Contributor Covenant v2.1 template) to satisfy a Digital Public Good application requirement (9C — Protection from Harassment).

Review findings:

• Verified against the actual template — no leftover placeholders (e.g. no [INSERT CONTACT METHOD] boilerplate left unfilled), all reference links ([homepage], [v2.1], [FAQ], [translations], [Mozilla CoC]) resolve correctly.
• Enforcement contact info@developmentgateway.org — confirmed this matches the existing public contact in [README.md:35](README.md:35), so the claim in the PR description checks out.
• No pre-existing CODE_OF_CONDUCT.md or CONTRIBUTING.md in the repo, so no conflict/duplication.
• Copilot's review left only a summary, no inline comments/concerns.
• This is pure documentation with zero code/build impact — essentially no risk.

Verdict: Clean, correct, ready to merge as-is. Nothing to fix.