## gstack (REQUIRED — global install)

**Before doing ANY work, verify gstack is installed:**

```bash
test -d ~/.claude/skills/gstack/bin && echo "GSTACK_OK" || echo "GSTACK_MISSING"
```

If GSTACK_MISSING: STOP. Do not proceed. Tell the user:

> gstack is required for all AI-assisted work in this repo.
> Install it:
> ```bash
> git clone --depth 1 https://github.com/garrytan/gstack.git ~/.claude/skills/gstack
> cd ~/.claude/skills/gstack && ./setup --team
> ```
> Then restart your AI coding tool.

Do not skip skills, ignore gstack errors, or work around missing gstack.

Using gstack skills: After install, skills like /qa, /ship, /review, /investigate,
and /browse are available. Use /browse for all web browsing.
Use ~/.claude/skills/gstack/... for gstack file paths (the global path).

## Hard mainline requirement

All AI-assisted work in this repo must strictly follow `docs/ICT交易全书_出版终校版.md` and the governance anchor `docs/AI_ICT_硬性主线约束_必须遵循ICT交易全书_2026-05-21_v1.md`.

Before choosing or implementing any slice, verify that it serves the ICT book chain:

```text
Range / Draw / Location
-> Liquidity / Sweep / Inducement / Path
-> Displacement / MSS / FVG / Retest / Session
-> backtest evidence
-> pre-market plan
-> intraday unique focus or no-trade reason
-> journal / study-notes feedback
```

If a requested or inferred task does not map to this chain, do not promote it into the trader-facing product. Put necessary operational surfaces under System Ops, or stop and document the mismatch. Do not restart external-context/archive/digest/workflow/handoff long-tail work unless it directly supports the ICT book mainline.