Refactor with platform-specific constraints

scripts/powershell/get-feature-paths.ps1

@@ -0,0 +1,15 @@
+#!/usr/bin/env pwsh
+param()
+$ErrorActionPreference = 'Stop'
+
+. "$PSScriptRoot/common.ps1"
+
+$paths = Get-FeaturePathsEnv
+if (-not (Test-FeatureBranch -Branch $paths.CURRENT_BRANCH)) { exit 1 }
+
+Write-Output "REPO_ROOT: $($paths.REPO_ROOT)"
+Write-Output "BRANCH: $($paths.CURRENT_BRANCH)"
+Write-Output "FEATURE_DIR: $($paths.FEATURE_DIR)"
+Write-Output "FEATURE_SPEC: $($paths.FEATURE_SPEC)"
+Write-Output "IMPL_PLAN: $($paths.IMPL_PLAN)"
+Write-Output "TASKS: $($paths.TASKS)"