feat(docker): multi-stage Dockerfiles with npmmirror registry

Rewrites dashboard and finder Dockerfiles to use a clean multi-stage
build (deps → builder → runner) that installs npm packages inside
Alpine Linux, avoiding the SWC musl binary issue when building from
Windows host. Uses registry.npmmirror.com for reliable installs from
restricted networks (Iran).

- docker/api/Dockerfile: .NET 10 multi-stage build
- docker/web/Dockerfile: Node 20-alpine multi-stage, npmmirror
- docker/finder/Dockerfile: Node 20-alpine multi-stage, npmmirror
- docker/website/Dockerfile: marketing website build
- scripts/: PowerShell helper scripts for local dev

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

scripts/docker-up-full.ps1

@@ -0,0 +1,39 @@
+# Pull base images then start the full Meezi stack in Docker.
+$ErrorActionPreference = "Stop"
+$Root = Split-Path -Parent $PSScriptRoot
+Push-Location $Root
+
+$images = @(
+    "mcr.microsoft.com/dotnet/sdk:10.0",
+    "mcr.microsoft.com/dotnet/aspnet:10.0",
+    "postgres:16-alpine",
+    "redis:7-alpine",
+    "node:20-alpine"
+)
+
+Write-Host "Pulling base images (use VPN if pulls time out)..." -ForegroundColor Cyan
+foreach ($img in $images) {
+    Write-Host "  pull $img"
+    docker pull $img
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "Failed to pull $img. Enable VPN or configure a registry mirror (see docs/DOCKER.md)." -ForegroundColor Red
+        Pop-Location
+        exit 1
+    }
+}
+
+Write-Host ""
+Write-Host "Building and starting all services..." -ForegroundColor Cyan
+docker compose up -d --build
+$code = $LASTEXITCODE
+Pop-Location
+if ($code -ne 0) { exit $code }
+
+Write-Host ""
+Write-Host "Meezi is starting:" -ForegroundColor Green
+Write-Host "  Dashboard  http://localhost:3101/fa/login"
+Write-Host "  API        http://localhost:5080/swagger"
+Write-Host "  Health     http://localhost:5080/health"
+Write-Host ""
+Write-Host "  docker compose ps"
+Write-Host "  docker compose logs -f api"