docs: add 3.12.1 changelog (#943)

Author: adela-bytebase

mintlify/changelog/bytebase-3-12-1.mdx

@@ -0,0 +1,32 @@
+---
+title: Bytebase 3.12.1 - Nov 20, 2025
+author: Adela
+updated_at: 2025/11/20 18:00:00
+description: 'Audit log export to stdout'
+---
+
+import InstallUpgrade from '/snippets/install/install-upgrade.mdx';
+
+## 🚀 Features
+
+- Add [stdout audit logger](https://docs.bytebase.com/security/audit-log/#emit-audit-logs-to-stdout) for integration with log aggregation systems.
+- Add folder-based organization to Worksheets, including:
+  - Nested folders with drag-and-drop reordering
+  - Inline actions (rename, star/unstar, sharing)
+  - Filters for worksheet types
+- Add project-level data query policies (previously workspace-only).
+- Support [cross-account AWS IAM Authentication](https://docs.bytebase.com/get-started/connect/aws#cross-account-iam-authentication).
+- **PostgreSQL** - Add [AI-driven custom SDL review](https://docs.bytebase.com/gitops/state-based-workflow/sql-review-ci#ai-powered-validation-with-your-standards).
+
+## 🔔 Notable changes
+
+- Add TLS configuration support for Vault connections.
+
+## 🎄 Enhancements
+
+- Revamp issue search UI.
+- Add **GitOps Service Agent** role for automated CI/CD workflows.
+- **PostgreSQL** - Support SDL for materialized views, enum types, and extensions.
+- **BigQuery** - Add dry-run support in SQL Editor to validate queries before execution.
+
+<InstallUpgrade />

mintlify/docs.json

@@ -380,6 +380,7 @@
       {
         "tab": "Changelog",
         "pages": [
+          "changelog/bytebase-3-12-1",
           "changelog/bytebase-3-12-0",
           "changelog/bytebase-3-11-1",
           "changelog/bytebase-3-11-0",