Drop PowerShell dev/test helper scripts in favor of make

scripts/dev.ps1

@@ -1,13 +0,0 @@
-# Builds the gateway binary (when missing) and starts the Tauri dev app.
-param([switch]$NoBuild)
-
-$ErrorActionPreference = "Stop"
-$repoRoot = Split-Path -Parent $PSScriptRoot
-Set-Location $repoRoot
-
-$gateway = Join-Path $repoRoot "bin\gateway.exe"
-if (-not $NoBuild -and -not (Test-Path $gateway)) {
-    & (Join-Path $PSScriptRoot "build-gateway.ps1")
-}
-
-npm run tauri dev

scripts/test.ps1

@@ -1,13 +0,0 @@
-# Runs the full test suite: Go tests, then frontend vitest.
-param([switch]$SkipFrontend)
-
-$ErrorActionPreference = "Stop"
-$repoRoot = Split-Path -Parent $PSScriptRoot
-Set-Location $repoRoot
-
-go test ./...
-if ($LASTEXITCODE -ne 0) { exit 1 }
-
-if (-not $SkipFrontend) {
-    npm test
-}