Rename product to dockmv (container, image, module, env vars)

Container/image/service name, Go module path, CLI binary name, and
DOCKER_MIGRATE_* env vars still used the old working name; the project
is branded DockMV everywhere else (README, logo, Gitea repo).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

scripts/build-release.ps1

@@ -1,10 +1,10 @@
 #requires -Version 5.1
 <#
 .SYNOPSIS
-    Build the docker-migrate web UI and cross-compile release binaries.
+    Build the dockmv web UI and cross-compile release binaries.
 
 .DESCRIPTION
-    Produces dist/docker-migrate-<os>-<arch>[.exe] for every target, one archive
+    Produces dist/dockmv-<os>-<arch>[.exe] for every target, one archive
     per binary (.zip for Windows, .tar.gz elsewhere) and dist/SHA256SUMS.txt.
 
     The PowerShell equivalent of `make release`, so a Windows host without make
@@ -130,11 +130,11 @@ try {
         if (-not $Tag) { $Tag = "dev" }
     }
 
-    $bin     = "docker-migrate"
+    $bin     = "dockmv"
     $distDir = Join-Path $repoRoot "dist"
     $ldflags = "-s -w -X main.version=$Tag"
 
-    Write-Host "docker-migrate release build" -ForegroundColor Cyan
+    Write-Host "dockmv release build" -ForegroundColor Cyan
     Write-Host "  go      : $Go"
     Write-Host "  tag     : $Tag"
     Write-Host "  targets : $($Targets -join ', ')"
@@ -152,13 +152,17 @@ try {
     # run before the compile — not after, and not in parallel with it.
     if (-not $SkipUi) {
         Write-Host "Building web UI..." -ForegroundColor Cyan
-        if (-not (Get-Command npm -ErrorAction SilentlyContinue)) {
+        # npm.cmd, not npm(.ps1): the ps1 shim reparses $MyInvocation.Line as text
+        # when called via `& $Exe @Args`, which mangles splatted args into a bogus
+        # single token and makes npm print usage instead of running the command.
+        $npmCmd = (Get-Command npm.cmd -ErrorAction SilentlyContinue).Source
+        if (-not $npmCmd) {
             throw "npm not found — install Node 22+, or pass -SkipUi to reuse the committed internal/webui/dist."
         }
         Push-Location (Join-Path $repoRoot "web")
         try {
-            Invoke-Checked npm @("ci", "--no-audit", "--no-fund")
-            Invoke-Checked npm @("run", "build")
+            Invoke-Checked $npmCmd @("ci", "--no-audit", "--no-fund")
+            Invoke-Checked $npmCmd @("run", "build")
         }
         finally { Pop-Location }
         Write-Host ""

scripts/publish.ps1

@@ -1,7 +1,7 @@
 #requires -Version 5.1
 <#
 .SYNOPSIS
-    Build the docker-migrate container image + release binaries; push the image to
+    Build the dockmv container image + release binaries; push the image to
     the Gitea registry and attach the binaries to a Gitea release.
 
 .DESCRIPTION
@@ -58,7 +58,7 @@ param(
     [string]$Owner = "kawa",
 
     # Image name.
-    [string]$Image = "docker-migrate",
+    [string]$Image = "dockmv",
 
     # Repository name holding the releases. The image and the repo are not named
     # the same here, so this is separate from -Image.
@@ -242,7 +242,7 @@ function Publish-BinaryRelease {
         Write-Host "  creating release $Tag in $RepoPath..." -ForegroundColor DarkGray
         $release = Invoke-GiteaApi -Method POST -Uri $releasesUri -Token $Token -Body @{
             tag_name = $Tag
-            name     = "docker-migrate $Tag"
+            name     = "dockmv $Tag"
             body     = "Standalone binaries for linux, macOS and Windows. Container image: see the package registry."
             draft    = $false
         }
@@ -311,7 +311,7 @@ try {
     $tags = @("$base`:$Tag")
     if (-not $NoLatest -and $Tag -ne "latest") { $tags += "$base`:latest" }
 
-    Write-Host "docker-migrate publish" -ForegroundColor Cyan
+    Write-Host "dockmv publish" -ForegroundColor Cyan
     Write-Host "  registry : $Registry"
     if ($pushImage) {
         Write-Host "  image    : $base"
@@ -358,10 +358,10 @@ try {
 
             # Uploading a binary older than the code it claims to be is the one way
             # this flag can quietly go wrong, so say so rather than assume.
-            $oldest = (Get-ChildItem $distDir -Filter "docker-migrate-$Tag-*" -File |
+            $oldest = (Get-ChildItem $distDir -Filter "dockmv-$Tag-*" -File |
                 Sort-Object LastWriteTime | Select-Object -First 1)
             if (-not $oldest) {
-                throw "no archives named docker-migrate-$Tag-* in $distDir — the exe on disk was built under a different tag. Drop -NoBinaryBuild."
+                throw "no archives named dockmv-$Tag-* in $distDir — the exe on disk was built under a different tag. Drop -NoBinaryBuild."
             }
             $newer = Get-ChildItem $repoRoot -Recurse -Include *.go, *.ts, *.tsx, *.css, *.html -File |
                 Where-Object {
@@ -383,7 +383,7 @@ try {
             & (Join-Path $PSScriptRoot "build-release.ps1") -Tag $Tag -Targets $Targets -SkipUi:$SkipUi
         }
 
-        $artifacts = @(Get-ChildItem $distDir -Filter "docker-migrate-$Tag-*" -File | ForEach-Object FullName)
+        $artifacts = @(Get-ChildItem $distDir -Filter "dockmv-$Tag-*" -File | ForEach-Object FullName)
         if (-not $artifacts.Count) { throw "no release archives for $Tag found in $distDir." }
         $sums = Join-Path $distDir "SHA256SUMS.txt"
         if (Test-Path $sums) { $artifacts += $sums }