Fresh clone cannot install or build since the reshape: root tsconfig now includes graph/test fixtures (92 errors, npm install exits 2) and npm ci has no lock file #580

What

A fresh clone of main at 61b0ef1 cannot be installed or built with the documented commands:

Counted from the de-coloured build log:

error lines: 92, all in graph/test/typescript
  51 TS2307  Cannot find module '@f/shapes' | '@fixture/shapes' | '@tt/named' | '@d/handler' | …
   4 TS17004, 2 TS1241, 2 TS1270, 1 TS18048, 1 TS2532 …
graph/test/typescript/fixtures/dispatch/src/consumer.ts:1:37 - error TS2307: Cannot find module '@d/handler'
graph/test/typescript/fixtures/linking/src/link-barrel.ts:8:37 - error TS2307: Cannot find module '@tt/barrel'

Cause: a regression from the reshape

• At 69a0383 the root tsconfig.json had "rootDir": "./src" and "include": ["src/**/*"], and the suites' fixtures lived in a top-level test/, outside the compiled root.
• b30d3bfb ("reshape: the engine's tests move to graph/test/") and f24503a0 ("src/ becomes graph/") changed that. The root config is now "rootDir": "./graph" and "include": ["graph/**/*"], so tsc compiles every fixture under graph/test/typescript/fixtures/*/src.
• Those fixtures are separate TypeScript programs. They import through path aliases (@d/, @tt/, @f/, @fixture/) defined only in each fixture's own tsconfig.json, and some deliberately exercise invalid code. Under the root config they cannot resolve.

The pipeline itself works despite the failed build. graph/pipeline/run-souffle.sh runs the bundle stage through node_modules/.bin/tsx whenever tsx is installed, and the parser workspace builds first. So this breaks installation and dist/, not a solve. But npm install exiting non-zero is the first thing anyone following the README sees, and bin/axiomcode's own hint ("run: npm install && npm run build") leads straight into it.

Reproduce

git clone <repo> x && cd x && git checkout 61b0ef1
npm ci             # EUSAGE, no package-lock.json
npm install; echo $?   # 2 (prepare -> build)
npm run build 2>&1 | sed $'s/\x1b\\[[0-9;]*m//g' | grep -c 'error TS'   # 92, all graph/test/typescript/fixtures

Suggested fix

1. Add "graph/test/**" to exclude in the root tsconfig.json, or give the suites their own tsconfig. This restores the pre-reshape boundary.
2. Either commit package-lock.json again, or change the docs and hints from npm ci to npm install.
3. Consider making prepare build only what a consumer needs (-w parser plus the bundle), so a type error in a test fixture cannot fail installation.
4. This is exactly what a CI gate on main would have caught (No CI gate on main: the regression suites never run before a merge, and a suite that skips itself reports success #417).

Found while running callgraph-benchmark against the latest engine from a scratch clone.