docs(changelog): add v0.1.1.3 download and SHA256 links; add release automation scripts (upload/prune/manage/checksums)

scripts/gen_checksums.ps1

@@ -0,0 +1,35 @@
+param(
+    [Parameter(Mandatory=$true)][string]$ZipPath,
+    [Parameter(Mandatory=$true)][string]$BinDir
+)
+
+$ErrorActionPreference = 'Stop'
+
+if (-not (Test-Path -LiteralPath $ZipPath)) {
+    throw "ZIP not found: $ZipPath"
+}
+
+if (-not (Test-Path -LiteralPath $BinDir)) {
+    throw "BinDir not found: $BinDir"
+}
+
+function Write-ChecksumFile {
+    param(
+        [Parameter(Mandatory=$true)][string]$Path
+    )
+    $hash = (Get-FileHash -Algorithm SHA256 -LiteralPath $Path).Hash.ToLower()
+    $outfile = "$Path.sha256"
+    $line = "$hash  $([System.IO.Path]::GetFileName($Path))"
+    Set-Content -Path $outfile -NoNewline -Encoding ASCII -Value $line
+    Write-Host "Wrote $outfile"
+}
+
+# ZIP checksum
+Write-ChecksumFile -Path $ZipPath
+
+# Binaries checksums
+Get-ChildItem -LiteralPath $BinDir -File | ForEach-Object {
+    Write-ChecksumFile -Path $_.FullName
+}
+
+