Add January 23, 2026 changelog entry

[ethanpalm]

Added new changelog entry documenting recent product updates including skills.md auto-generation, audit logs for authentication events, and simplified authentication flow. This update follows the established changelog format and highlights key features shipped this week.

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Created by Mintlify agent

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Note

Adds a new dated entry to changelog.mdx documenting recent releases.

• Introduces skill.md auto-generation with override via repo-root skills.md; links to /ai/skillmd
• Adds audit logging for authentication events with link to /dashboard/audit-logs
• Enables raw Markdown responses when Accept: text/markdown is sent
• Improvements: unified authentication flow, automatic noindex on hidden pages, Markdown captions for images

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