chore: remove legacy 'anet quickstart' command (closes #45)

[s2agi]

Author & Helpers

Author (Primary): 通信工程马

Helpers:

• 通信龙: dispatch + review (Option A confirm, scope contract)
• Vincent: issue raise ([Doc] 文档修改建议 quickstart 彻底删了吧，内容都放到 demo 里面 #45, telegram 4192+4193+4194)

Tier review gate: 通信龙 (Lead, post-onboarding 单审 OK，breaking change 加 doc 双语走 PR)

Why

Closes #45

Vincent 4192 raise: "quickstart 彻底删了吧，内容都放到 demo 里面"

anet quickstart 是 v0.6 legacy 4 步 wizard，功能跟现代命令组合 redundant：

• Step 1: 配 hub URL (没起 hub，只检测健康)
• Step 2: register/login user
• Step 3: 创建 1 agent
• Step 4: 打印提示

现代命令 (anet hub start + anet setup + anet register + anet login + anet node create) 已 cover 全部功能 + 更可控 + 已 maintain。demos/hello-world docker-compose 已 cover "一键起 hub + agent" use case，新增 demos/quickstart/ 会跟 hello-world 重叠 (per 调研 Option A 推荐 → 通信龙 confirm)。

What

文件	改动	行
agent-network/bin/cli.ts	删 quickstartCommand() function (L2839-2976, 138 行)	-138
agent-network/bin/cli.ts	dispatch case "quickstart" 改 deprecation message + process.exit(1)	-1 +13
agent-network/README.md	删 legacy anet quickstart 行	-1
docs-site/docs/guide/cli.md	ZH 删命令表 row	-1
docs-site/docs/en/guide/cli.md	EN 删命令表 row	-1
docs-site/docs/guide/getting-started.md	ZH 删未验证 bullet	-1
docs-site/docs/en/guide/getting-started.md	EN 删 Not-verified bullet	-1

Total: 6 files, +13 -145

Migration path (per bottom-up SOP)

老用户跑 anet quickstart 现在输出 helpful deprecation message + exit(1)（非 silent fail）:

[anet] ⚠ 'anet quickstart' 已删除（per #45）。改用现代命令组合:
  anet hub start          # 起 CommHub Server
  anet setup              # 装 runtime deps + 选 runtime (wizard)
  anet register           # 创建账号
  anet login              # 登录
  anet node create <name> # 创建 agent

或一键 demo: cd demos/hello-world && docker compose up

What's NOT changed (Frozen archive per RELEASE-SOP.md)

历史 frozen 不动：

• docs/changelog.md / evolution-log.md / claude-code-cleanup-review.md / design-*.md
• docs-site/docs/changelog.md / en/changelog.md
• docs-site/docs/v0.8.0/**
• docs-site/docs/.vitepress/dist/** (build output，rebuild 会清)

README.en.md 顶部 ## 30-second quickstart section header (general 名词 "快速入门") 跟 anet quickstart CLI 命令无关，section 内容是现代命令组合，保留。

How to verify

# 1. typecheck
cd agent-network && bun install && npm run typecheck   # 应 no error

# 2. 验 deprecation message + exit code
bun bin/cli.ts quickstart; echo "exit=$?"
# 期望:
#   [anet] ⚠ 'anet quickstart' 已删除（per #45）。改用现代命令组合:
#   ...
#   或一键 demo: cd demos/hello-world && docker compose up
#   exit=1

# 3. grep verify 函数完全删除 (除 dispatch deprecation)
grep -nE "quickstartCommand|async function quickstart" bin/cli.ts
# 期望: 空 (function 已删，只剩 dispatch case "quickstart": 输出 message)

# 4. grep verify docs 提及全删 (排除 frozen archive)
grep -rln "quickstart" agent-network/ docs-site/docs/ 2>/dev/null \
  | grep -v ".vitepress/dist" \
  | grep -v "v0.8.0/" \
  | grep -v "changelog.md" \
  | grep -v "evolution-log\|claude-code-cleanup\|design-"
# 期望: agent-network/bin/cli.ts (deprecation message) only

# 5. README.en.md "30-second quickstart" section 保留确认
grep -nE "30-second quickstart" README.en.md
# 期望: L66 + L228 (section header + internal link, 保留 — 跟 CLI 命令无关)

Test evidence

本地全跑通：

• ✅ bun install + npm run typecheck no error
• ✅ bun bin/cli.ts quickstart 输出 deprecation banner + exit=1
• ✅ grep quickstartCommand 空 (function 完全删)
• ✅ 6 files diff 干净，0 误删 frozen archive，0 误改 unrelated
• ✅ rebased on top of latest origin/main

Checklist

• Relevant tests pass locally (typecheck + cli runtime test)
• docs-site/docs/changelog.md updated — n/a (frozen archive 不动 per RELEASE-SOP.md，新版本发布时通信文档马 R 系列同步 changelog)
• Docs synced (cli.md + getting-started.md ZH/EN 全 sync)
• No secrets / tokens / private IPs / /home/<user> paths in the diff
• Conventional Commits message (chore:)
• No Co-Authored-By: Claude* footer (OSS rule)
• Attribution trailer (Author-Agent: 通信工程马 + Helpers:)
• Issue linked via Closes #45