diff --git a/scripts/upload-release-assets.ps1 b/scripts/upload-release-assets.ps1
new file mode 100644
index 0000000..b600d08
--- /dev/null
+++ b/scripts/upload-release-assets.ps1
@@ -0,0 +1,161 @@
+<#
+.SYNOPSIS
+  Upload pre-built NSIS artifacts to an existing Gitea release.
+
+.DESCRIPTION
+  Use when the tag v* is already pushed (e.g. release.ps1 succeeded up to
+  push but failed on upload, or release was created manually without assets).
+  If a release for the tag does not exist yet, it is created. If it exists,
+  same-name assets are replaced.
+
+.PARAMETER Tag
+  Version tag, e.g. v0.3.0. Defaults to v<package.json version>.
+
+.EXAMPLE
+  pwsh scripts/upload-release-assets.ps1
+  pwsh scripts/upload-release-assets.ps1 -Tag v0.3.0
+#>
+param(
+  [string]$Tag
+)
+
+$ErrorActionPreference = 'Stop'
+
+$repoOwner = 'AnRil'
+$repoName  = 'laude'
+$giteaHost = 'xn--90adajar8af4h.xn--p1ai/git'
+$apiBase   = "https://$giteaHost/api/v1"
+
+if (-not $env:GITEA_TOKEN) {
+  Write-Error "GITEA_TOKEN not set. Set it via [Environment]::SetEnvironmentVariable('GITEA_TOKEN', '<value>', 'User') and open a new PowerShell session."
+  exit 1
+}
+
+$root = Resolve-Path (Join-Path $PSScriptRoot '..')
+Set-Location $root
+
+if (-not $Tag) {
+  $version = (Get-Content package.json | ConvertFrom-Json).version
+  $Tag = "v$version"
+}
+$version = $Tag.TrimStart('v')
+
+$installer = Join-Path 'release' "Exercise-Reminder-Setup-$version.exe"
+$blockmap  = "$installer.blockmap"
+$manifest  = Join-Path 'release' 'latest.yml'
+foreach ($f in @($installer, $blockmap, $manifest)) {
+  if (-not (Test-Path $f)) {
+    Write-Error "Artifact not found: $f. Build first with: npm run dist"
+    exit 1
+  }
+}
+
+$headers = @{
+  Authorization = "token $env:GITEA_TOKEN"
+  Accept        = 'application/json'
+}
+
+# --- Find or create release ----------------------------------------------
+Write-Host "Looking for existing release $Tag..." -ForegroundColor Cyan
+$release = $null
+try {
+  $release = Invoke-RestMethod `
+    -Uri "$apiBase/repos/$repoOwner/$repoName/releases/tags/$Tag" `
+    -Method Get `
+    -Headers $headers
+  Write-Host "  Found release id=$($release.id)" -ForegroundColor DarkGray
+} catch {
+  if ($_.Exception.Response.StatusCode.value__ -eq 404) {
+    Write-Host "  Not found, creating new release..." -ForegroundColor DarkGray
+
+    $prev = $null
+    try {
+      $prevTagOutput = & git describe --tags --abbrev=0 "$Tag^" 2>$null
+      if ($LASTEXITCODE -eq 0 -and $prevTagOutput) {
+        $prev = $prevTagOutput.Trim()
+      }
+    } catch {
+      $prev = $null
+    }
+    if ($prev) {
+      $log = (& git log --pretty=format:"- %s" "$prev..$Tag") -join "`n"
+    } else {
+      # No prior tag — list last 10 commits up to this tag.
+      $log = (& git log --pretty=format:"- %s" -n 10 "$Tag") -join "`n"
+    }
+    $body = "### Changes`n`n$log`n`n---`n`nInstaller below: run it; if app is already installed, it updates in place and keeps your settings."
+
+    $payload = @{
+      tag_name   = $Tag
+      name       = "Exercise Reminder $Tag"
+      body       = $body
+      draft      = $false
+      prerelease = $false
+    } | ConvertTo-Json -Depth 5
+
+    $release = Invoke-RestMethod `
+      -Uri "$apiBase/repos/$repoOwner/$repoName/releases" `
+      -Method Post `
+      -Headers $headers `
+      -Body $payload `
+      -ContentType 'application/json'
+    Write-Host "  Created release id=$($release.id)" -ForegroundColor Green
+  } else {
+    throw
+  }
+}
+
+# --- Delete existing assets with same names (to allow re-upload) ---------
+$existing = Invoke-RestMethod `
+  -Uri "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets" `
+  -Method Get `
+  -Headers $headers
+foreach ($asset in @($installer, $blockmap, $manifest)) {
+  $name = Split-Path $asset -Leaf
+  $found = $existing | Where-Object { $_.name -eq $name }
+  if ($found) {
+    Write-Host "Removing existing asset $name (id=$($found.id))..." -ForegroundColor Yellow
+    Invoke-RestMethod `
+      -Uri "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets/$($found.id)" `
+      -Method Delete `
+      -Headers $headers | Out-Null
+  }
+}
+
+# --- Upload assets -------------------------------------------------------
+# Use curl.exe (bundled with Win10+) because Invoke-RestMethod in PS 5.1
+# chokes on large multipart uploads (>50MB) over slower connections.
+$curlCmd = Get-Command curl.exe -ErrorAction SilentlyContinue
+if ($curlCmd) {
+  $curl = $curlCmd.Source
+} else {
+  $curl = "$env:SystemRoot\System32\curl.exe"
+  if (-not (Test-Path $curl)) {
+    Write-Error "curl.exe not found. Install via 'winget install curl' or add to PATH."
+    exit 1
+  }
+}
+
+foreach ($asset in @($installer, $blockmap, $manifest)) {
+  $name = Split-Path $asset -Leaf
+  $size = (Get-Item $asset).Length
+  Write-Host ("Uploading {0} ({1:N1} MB)..." -f $name, ($size / 1MB)) -ForegroundColor Cyan
+  $uri = "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets?name=$([uri]::EscapeDataString($name))"
+  # -f: fail on HTTP errors; -s -S: silent but show errors; --data-binary @file
+  & $curl `
+    --fail-with-body `
+    --silent --show-error `
+    -H "Authorization: token $env:GITEA_TOKEN" `
+    -H "Content-Type: application/octet-stream" `
+    --data-binary "@$asset" `
+    $uri
+  if ($LASTEXITCODE -ne 0) {
+    Write-Error "Upload failed for $name (curl exit $LASTEXITCODE)"
+    exit 1
+  }
+}
+
+$releaseUrl = "https://$giteaHost/$repoOwner/$repoName/releases/tag/$Tag"
+Write-Host ""
+Write-Host "Release assets uploaded" -ForegroundColor Green
+Write-Host "  $releaseUrl"