docs: add ambassador program policy to Governance

[young-wallace]

Overview

This PR closes a governance gap by adding a versioned Ambassador Program policy document under Governance/community/. It defines ambassador responsibilities, the selection process, and the recognition model, and records the change in the Governance changelog.

Related Issue

Changes

📜 Ambassador Program Policy

• [ADD] Governance/community/AMBASSADOR_PROGRAM.md

  • Documents ambassador responsibilities (community support, onboarding, feedback relay, event/education participation).
  • Specifies the selection process (eligibility, nomination, review, term and renewal).
  • Defines the recognition model (public acknowledgment, role badge, maintainer referral path).
  • Keeps the policy self-contained within the Governance folder as a versioned reference.

• [MODIFY] Governance/CHANGELOG.md

  • Records the addition of the Ambassador Program policy.

Verification Results

Scope check:
✅ Only 2 files changed
✅ No changes outside Governance/
✅ No code paths modified — no regression risk to existing functionality

Acceptance Criteria	Status
Governance requirement is implemented successfully	✅ Governance/community/AMBASSADOR_PROGRAM.md added with responsibilities, selection, and recognition
Scope is limited to a maximum of two files	✅ 2 files changed
No changes are made outside the Governance folder	✅ Both changed paths are under Governance/
No regression in existing functionality	✅ Documentation-only change; no code touched
Tests pass and code follows project standards	✅ No test surface affected; follows existing Governance doc conventions
Change is documented	✅ Entry added to Governance/CHANGELOG.md

Closes #1862

[drips-wave]

@young-wallace Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

[RUKAYAT-CODER]

Thank you for contributing to the project.