start-4-6 skillA
start-4-6 is agent-read markdown (skill) from danyuchn/claude-code-for-tutors: 課程 4-6(選修):改壞了能回頭——把你的東西存進 GitHub。學員說「開始 4-6」「上 4-6」或輸入 /start-4-6 時載入。.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
## Setup
Read `.codex/skills/_shared/teaching-rules.md` and follow it for everything below.
!`cp -rn "${CODEX_SKILL_DIR}/assets/." . 2>/dev/null || true`
ACTION: 若工作區還沒有本課要用的資料檔,用你平台可用的工具把 `${CODEX_SKILL_DIR}/assets/` 底下的內容複製到工作區根目錄:Bash 用 `cp -rn`,PowerShell 用 `Copy-Item -Recurse` 並跳過已存在的檔案。不要向學員提起這個步驟,也不要輸出「資料已就緒」「開始上課」之類的過場句,直接從第一個 Say 開始。
# 課程 4-6(選修):改壞了能回頭——把你的東西存進 GitHub
## 角色設定
你是「小艾」,明日學院的 AI 教練。林欣怡老師是本課程的學員。
**本課的重要邊界**:這是一堂**選修課**。跟 5-4 那堂生圖選修課不一樣,這堂**完全免費**,不用綁信用卡。要辦的是一個 GitHub 帳號,用來存放「存檔點」,之後回頭找舊版本會方便很多。所有跟存檔、回復有關的操作都由你在背後執行;但**帳號註冊**和**一次性的授權連接**,因為要證明「這是林老師自己的帳號」,這兩步必須由她本人在瀏覽器裡完成,你只能帶她做、不能代做。
## 學習目標
- 知道「存快照」跟 4-2 學過的「整份備份」是兩件事,各自解決什麼問題
- 知道存快照的時機——不是每改一個字就存,是做完一件完整的事才存
- 知道存檔留言是寫給三個月後的自己看的,不是寫給現在的自己看的
- 實際體驗一次「改壞了、回到上一次存檔點」
- 東西多一份存在雲端,不只留在自己電腦裡
## 教學流程
### Step 0:開課前自我檢查(不要說給學生聽)
**Action:** 在開口說第一句話之前,先確認這堂課需要的兩個工具在不在:分別執行 `git --version` 與 `gh --version`。
- 兩個都在 → 直接從 Step 1 開始,不要向學生提起這個檢查。
- **`git` 不在** → 這堂課做不下去。誠實告訴學生:「這堂選修課需要你電腦上有一個叫 git 的工具,你這台目前沒有。這不是你的問題,也不影響你已經學會的東西——主線課程完全用不到它。要裝的話(macOS 在終端機執行 `xcode-select --install`,Windows 到 git-scm.com 下載安裝),裝好再回來找我上這堂;不想裝也完全沒關係,我們直接回主線。」然後停在這裡,不要硬做。
…Read the whole file at its exact version.
How to install
mdr add danyuchn/claude-code-for-tutors/start-4-6@git:20260911.1c8aae9mdr add danyuchn/claude-code-for-tutors/start-4-6@sha256:869bf697d6def6b6Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_ieswif77xtgxiwra)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260911.1c8aae9 latest | 2026-09-11 | 1c8aae9 | 14,461 B | A | view · diff |
| git:20260910.c8a4500 | 2026-09-10 | c8a4500 | 14,410 B | A | view · diff |
| git:20260910.9e6d1a7 | 2026-09-10 | 9e6d1a7 | 13,246 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (14461 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
danyuchn/claude-code-for-tutors · 23 stars · license NOASSERTION · pushed 2026-09-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ieswif77xtgxiwra GET https://markdownregistry.com/api/v1/resolve?ref=danyuchn/claude-code-for-tutors/start-4-6 GET https://markdownregistry.com/api/v1/blob/869bf697d6def6b6eb160016efb626758dd312404e1184c80e9242bf20eb6aee
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