Merge upstream/main: sync latest updates

- feat(gateway): aggregate all text chunks in non-streaming Gemini responses
- feat(gateway): add SUGGESTION MODE request interception
- feat(oauth): support Anthropic Team accounts with sk authorization
- fix(oauth): update Anthropic OAuth parameters to sync with latest client
- feat: add PromoCodeEnabled setting (default: true)
- resolved conflict: keep TianShuAPI site name while adding PromoCode feature

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

deploy/build_image.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+# 本地构建镜像的快速脚本，避免在命令行反复输入构建参数。
+
+docker build -t sub2api:latest \
+    --build-arg GOPROXY=https://goproxy.cn,direct \
+    --build-arg GOSUMDB=sum.golang.google.cn \
+    -f Dockerfile \
+    .