fix(scripts): repair the Makefile test paths and the e2e name filter

Three Makefile targets globbed a test/ directory that has never existed here,
so test-unit, test-contract and test-live-check could not run at all.

run-live.mjs selected the end-to-end scenarios with --test-name-pattern=E2E,
which matched only because the titles used to embed an upstream test name.
Renaming the scenarios to snake_case left the pattern matching nothing, so
`make test-e2e` would have exited zero after running no tests; it now matches
the _e2e suffix and selects three scenarios per client.

Author: moonyue-w

Makefile

@@ -10,10 +10,10 @@ test:
 	npm test
 
 test-unit: build
-	node --test test/*.test.mjs
+	node --test tests/*.test.mjs
 
 test-contract: build
-	node --test test/api-contracts.test.mjs
+	node --test tests/api-contracts.test.mjs
 
 test-scenarios:
 	npm run test:scenarios
@@ -28,7 +28,7 @@ test-live-all: build
 	LIVE_ENV_FILE="$(LIVE_ENV_FILE)" node scripts/run-live.mjs all
 
 test-live-check: build
-	@for file in test/live/*.mjs; do node --check "$$file" || exit; done
+	@for file in tests/live/*.mjs; do node --check "$$file" || exit; done
 
 test-e2e: test
 	LIVE_ENV_FILE="$(LIVE_ENV_FILE)" node scripts/run-live.mjs e2e

scripts/run-live.mjs

@@ -18,7 +18,7 @@ for (const selected of modes) {
 }
 const files = readdirSync('tests/live').filter(name => name.endsWith('.test.mjs') && modes.some(mode => name.startsWith(mode))).map(name => `tests/live/${name}`);
 const args = ['--test', '--test-concurrency=1'];
-if (mode === 'e2e') args.push('--test-name-pattern=E2E');
+if (mode === 'e2e') args.push('--test-name-pattern=_e2e$');
 args.push(...files);
 const result = spawnSync(process.execPath, args, { stdio: 'inherit' });
 process.exit(result.status ?? 1);