docs: add changelog 3.12.2 (#958)

* add changelog 3.12.2

* update

Author: adela-bytebase

mintlify/changelog/bytebase-3-12-2.mdx

@@ -0,0 +1,24 @@
+---
+title: Bytebase 3.12.2 - Dec 4, 2025
+author: Adela
+updated_at: 2025/12/04 18:00:00
+description: 'Improvements and Bug Fixes'
+---
+
+import InstallUpgrade from '/snippets/install/install-upgrade.mdx';
+
+## 🎄 Enhancements
+
+- Enhance database and query permission checks.
+- Improve selector performance with lazy loading for large workspaces.
+- **SQL Server** - Add [visualized EXPLAIN support](/sql-editor/run-queries#explain-query) in SQL Editor.
+- **Doris** - Improve syntax compatibility.
+
+## 🐞 Bug Fixes
+
+- Prevent DML statements from being incorrectly wrapped in CTEs in SQL Editor.
+- Fix popup handling for database change statements in SQL Editor.
+- Improve and isolate SQL Editor state management across browser tabs.
+- Format Cassandra, Spanner, and ClickHouse result data instead of showing raw protobuf.
+
+<InstallUpgrade />

mintlify/docs.json

@@ -381,6 +381,7 @@
       {
         "tab": "Changelog",
         "pages": [
+          "changelog/bytebase-3-12-2",
           "changelog/bytebase-3-12-1",
           "changelog/bytebase-3-12-0",
           "changelog/bytebase-3-11-1",