Auto: ablegacy-7 — array contiguous block addressing

Closes #250

scripts/e2e/test-ablegacy.ps1

@@ -95,5 +95,22 @@ $results += Test-SubscribeSeesChange `
     -DriverWriteArgs (@("write") + $commonAbLegacy + @("-a", $Address, "-t", "Int", "-v", $subValue)) `
     -ExpectedValue "$subValue"
 
+# PR 7 — contiguous array read smoke. The default `--tag=N7[120]` in the Docker
+# fixture's docker-compose.yml has plenty of room for `,10`; against real hardware
+# the seeded N7 file just needs at least 10 words. Asserts the CLI exits 0 (the
+# driver issued one PCCC frame for the whole block) — the per-element values are
+# whatever the device currently holds.
+Write-Header "Array contiguous read"
+$arrayResult = Invoke-Cli -Cli $abLegacyCli `
+    -Args (@("read") + $commonAbLegacy + @("-a", "N7:0,10", "-t", "Int"))
+if ($arrayResult.ExitCode -eq 0) {
+    Write-Pass "array read N7:0,10 succeeded"
+    $results += @{ Passed = $true }
+} else {
+    Write-Fail "array read N7:0,10 exit=$($arrayResult.ExitCode)"
+    Write-Host $arrayResult.Output
+    $results += @{ Passed = $false; Reason = "array read exit $($arrayResult.ExitCode)" }
+}
+
 Write-Summary -Title "AB Legacy e2e" -Results $results
 if ($results | Where-Object { -not $_.Passed }) { exit 1 }