chore: import upstream snapshot with attribution

scripts/desktop-dev.ps1

@@ -0,0 +1,166 @@
+<#
+.SYNOPSIS
+    Build and launch the AgentsView Tauri desktop app in dev mode on Windows.
+
+.DESCRIPTION
+    Builds the frontend SPA, compiles the Go sidecar binary, copies it into
+    the Tauri binaries directory, and runs `cargo tauri dev`.
+
+.PARAMETER SkipBuild
+    Skip the frontend and Go sidecar build steps. Use this when iterating
+    on Rust/Tauri code only and the sidecar binary is already up to date.
+#>
+param(
+    [switch]$SkipBuild
+)
+
+$ErrorActionPreference = "Stop"
+
+function ConvertTo-Semver {
+    param([string]$Raw)
+    # Strip leading 'v'
+    $Raw = $Raw -replace '^v', ''
+    # git-describe: 0.10.0-3-gabcdef -> 0.10.0-dev.3
+    if ($Raw -match '^(\d+\.\d+\.\d+)-(\d+)-g[0-9a-f]+(-dirty)?$') {
+        return "$($Matches[1])-dev.$($Matches[2])"
+    }
+    # Already semver, with optional prerelease (strip -dirty)
+    if ($Raw -match '^\d+\.\d+\.\d+(-[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*)?(-dirty)?$') {
+        return ($Raw -replace '-dirty$', '')
+    }
+    # Looks like a version but isn't valid semver
+    if ($Raw -match '^\d+\.') {
+        Write-Error "Malformed version tag: $Raw"
+        exit 1
+    }
+    # Non-tag fallback (bare hash, "dev", etc.)
+    return ""
+}
+
+function Update-TauriVersion {
+    param([string]$Version, [string]$ConfPath)
+    $semver = ConvertTo-Semver $Version
+    if (-not $semver) {
+        Write-Host "Skipping tauri.conf.json version patch (non-tag build: $Version)"
+        return
+    }
+    $origPath = "$ConfPath.orig"
+    if (-not (Test-Path $origPath)) {
+        Copy-Item $ConfPath $origPath
+    }
+    $content = Get-Content $ConfPath -Raw
+    $content = $content -replace '"version":\s*"[^"]*"', "`"version`": `"$semver`""
+    Set-Content -Path $ConfPath -Value $content -NoNewline
+    Write-Host "Patched tauri.conf.json version to $semver" -ForegroundColor Green
+}
+
+function Restore-TauriVersion {
+    param([string]$ConfPath)
+    $origPath = "$ConfPath.orig"
+    if (Test-Path $origPath) {
+        Move-Item -Force $origPath $ConfPath
+    }
+}
+
+# Ensure fnm-managed Node.js is on PATH. fnm requires an `fnm env`
+# eval in each new PowerShell session; without it, node/npm are not
+# found even though fnm itself is on PATH via WinGet links.
+if ((Get-Command fnm -ErrorAction SilentlyContinue) -and -not (Get-Command node -ErrorAction SilentlyContinue)) {
+    Write-Host "Activating fnm environment..." -ForegroundColor Yellow
+    fnm env --use-on-cd --shell powershell | Out-String | Invoke-Expression
+}
+
+$RepoRoot = Split-Path -Parent (Split-Path -Parent $PSScriptRoot)
+if (-not (Test-Path "$RepoRoot\go.mod")) {
+    # Script may live at repo/scripts/ directly
+    $RepoRoot = Split-Path -Parent $PSScriptRoot
+}
+if (-not (Test-Path "$RepoRoot\go.mod")) {
+    Write-Error "Could not locate repository root (no go.mod found)"
+    exit 1
+}
+
+$DesktopDir = Join-Path $RepoRoot "desktop"
+$FrontendDir = Join-Path $RepoRoot "frontend"
+$EmbedDir = Join-Path $RepoRoot "internal\web\dist"
+$BinDir = Join-Path $DesktopDir "src-tauri\binaries"
+# Detect Rust host triple for the sidecar binary name
+$Triple = (rustc -vV | Select-String "^host:").ToString().Split(" ", 2)[1].Trim()
+if (-not $Triple) {
+    Write-Error "Could not detect Rust host triple. Is rustc installed?"
+    exit 1
+}
+$SidecarBin = Join-Path $BinDir "agentsview-$Triple.exe"
+
+if (-not $SkipBuild) {
+    # --- Build frontend ---
+    Write-Host "Building frontend..." -ForegroundColor Cyan
+    Push-Location $FrontendDir
+    try {
+        npm ci
+        npm run build
+    } finally {
+        Pop-Location
+    }
+
+    # Copy frontend dist into Go embed directory
+    if (Test-Path $EmbedDir) {
+        Remove-Item -Recurse -Force $EmbedDir
+    }
+    Copy-Item -Recurse (Join-Path $FrontendDir "dist") $EmbedDir
+
+    # --- Build Go sidecar ---
+    Write-Host "Building Go sidecar..." -ForegroundColor Cyan
+
+    $version = git -C $RepoRoot describe --tags --always --dirty 2>$null
+    if (-not $version) { $version = "dev" }
+    $commit = git -C $RepoRoot rev-parse --short HEAD 2>$null
+    if (-not $commit) { $commit = "unknown" }
+    $buildDate = (Get-Date).ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssZ")
+    $ldflags = "-X main.version=$version -X main.commit=$commit -X main.buildDate=$buildDate"
+
+    $env:CGO_ENABLED = "1"
+    Push-Location $RepoRoot
+    try {
+        go run ./internal/pricing/cmd/litellm-snapshot -restore
+        if ($LASTEXITCODE -ne 0) {
+            throw "pricing snapshot restore failed with exit code $LASTEXITCODE"
+        }
+        go build -tags fts5 -ldflags $ldflags -o agentsview.exe ./cmd/agentsview
+    } finally {
+        Pop-Location
+    }
+
+    # Copy sidecar binary
+    if (-not (Test-Path $BinDir)) {
+        New-Item -ItemType Directory -Path $BinDir -Force | Out-Null
+    }
+    Copy-Item (Join-Path $RepoRoot "agentsview.exe") $SidecarBin -Force
+
+    Write-Host "Sidecar ready: $SidecarBin" -ForegroundColor Green
+
+    # Patch tauri.conf.json version to match the git-derived version
+    $TauriConf = Join-Path $DesktopDir "src-tauri\tauri.conf.json"
+    Update-TauriVersion -Version $version -ConfPath $TauriConf
+} else {
+    if (-not (Test-Path $SidecarBin)) {
+        Write-Error "Sidecar binary not found at $SidecarBin. Run without -SkipBuild first."
+        exit 1
+    }
+    Write-Host "Skipping build (using existing sidecar binary)" -ForegroundColor Yellow
+}
+
+# --- Launch Tauri dev ---
+# Use `cargo run` directly instead of `npx tauri dev` to avoid Tauri's
+# built-in dev server opening a browser tab (port 1430) that shows a
+# stale "Preparing your workspace" page. The app manages its own
+# webview navigation from the splash screen to the Go backend.
+$TauriConf = Join-Path $DesktopDir "src-tauri\tauri.conf.json"
+Write-Host "Launching Tauri dev..." -ForegroundColor Cyan
+Push-Location (Join-Path $DesktopDir "src-tauri")
+try {
+    cargo run
+} finally {
+    Pop-Location
+    Restore-TauriVersion -ConfPath $TauriConf
+}