TKE-31: add node pool scaling cookbook

[wenjiehs]

Closes TKE-31

Doc Change Report

Source issue: TKE-31 修正 ModifyClusterNodePool 节点池扩缩容参数与 cookbook 示例

canonical_doc_path: src/content/docs/basics/node-pool/02-scale-node-pool.md
operation_id: tke.nodepool.scale

修改范围

• 更新 src/content/docs/basics/node-pool/02-scale-node-pool.md，明确 ModifyClusterNodePool 使用 MinNodesNum / MaxNodesNum，补充本地 Cookbook dry-run 与 confirm-change 示例。
• 新增 cookbook/node-pool/scale_node_pool.py，默认 dry-run 序列化请求体；只有显式 --confirm-change 才调用 ModifyClusterNodePool。
• 在 src/data/cookbooks.js 注册 scale-node-pool Cookbook，并补充风险、参数、验证、cleanup 信息。
• 更新 test/cookbooks.test.mjs，覆盖 scale-node-pool Cookbook 注册和本地脚本引用。

事实来源

• Tencent Cloud official API doc: https://www.tencentcloud.com/document/product/457/38776，页面显示 Last updated: 2026-05-27 13:00:01。采用理由：官方 ModifyClusterNodePool 入参列出 ClusterId、NodePoolId、MaxNodesNum、MinNodesNum、Labels.N、Taints.N、EnableAutoscale、Tags.N、DeletionProtection 等字段，未列出 DesiredCapacity、MinSize、MaxSize。
• 仓库内目标文档: src/content/docs/basics/node-pool/02-scale-node-pool.md。采用理由：TKE-31 指定 canonical 修改目标。
• 仓库内 Cookbook 约定: cookbook/cluster/*.py、src/data/cookbooks.js、test/cookbooks.test.mjs。采用理由：复用现有 Python argparse、dry-run/confirm 和 Cookbook registry/test 风格。

Static Compile

• node --test test/navigation.test.mjs test/cookbooks.test.mjs test/create-cluster-autoupgrade.test.mjs: passed, 10/10 tests.
• find cookbook -name "*.py" -print0 | xargs -0 python3 -m py_compile: passed.
• git diff --check: passed.
• npm run build: passed, Astro built 194 pages and generated /cookbooks/scale-node-pool/.
• mkdocs build --strict: skipped; repository has no mkdocs.yml or mkdocs.yaml.

Dry Run Compile

• python3 cookbook/node-pool/scale_node_pool.py --help: passed.
• python3 cookbook/node-pool/scale_node_pool.py --cluster-id cls-xxxxxxxx --node-pool-id np-xxxxxxxx --region ap-guangzhou --enable-autoscale true --min-nodes-num 3 --max-nodes-num 20 --tag billing=virgilliang: passed; serialized ClusterId, NodePoolId, EnableAutoscale, MinNodesNum, MaxNodesNum, and Tags without calling Tencent Cloud APIs.
• No real Tencent Cloud resources were created, modified, or deleted.

Live Verify

• Required. This PR changes operation guidance and a Cookbook for ModifyClusterNodePool, which can modify a real TKE node pool and may create/release compute resources through autoscaling.

剩余人工确认项

• No API contract conflict found in official source used above.
• Production scaling policy, quota choice, and real node-pool execution remain Live Verify / human operational decisions.