release notes: add ai generator for improvements and bug fixes

scripts/release-notes-ai-generator/__main__.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""Generate TiDB improvements and bug fixes for release notes according to PRs and issues in a specified excel file.
+
+Two-phase workflow (run from the scripts/ directory):
+
+    # Phase 1: Process Excel, call AI, write results to Excel
+    python3 -m release-notes-ai-generator generate \
+        --version 8.5.7 \
+        --excel /path/to/release-note-excel.xlsx \
+        --releases-dir releases \
+        --ai-provider azure
+
+    # Phase 2: Export Markdown from the processed Excel
+    python3 -m release-notes-ai-generator export-markdown \
+        --version 8.5.7 \
+        --excel /path/to/release-note-excel_processed.xlsx \
+        --releases-dir releases \
+        --release-date "August 14, 2025"
+
+For detailed usage and options, see release-notes-generator-readme.md in this directory.
+"""
+
+from .cli import main
+
+raise SystemExit(main())