Snapshot WIP: solver HP epic progress, BPHX/HX physics, BMAD skill refresh.

Capture uncommitted solver robustness work (regularization, domain errors, linear solver lifecycle, tube DP/MSH), web workbench updates, and synced BMAD skills across IDE agent folders before starting BPHX pressure-drop.

Co-authored-by: Cursor <cursoragent@cursor.com>

dev.ps1

@@ -0,0 +1,100 @@
+# Entropyk dev launcher — robust, idempotent.
+# Starts the Rust API server (port 3030) and the Next.js UI (port 3000),
+# kills any stale instances first, waits for both to be reachable.
+
+$ErrorActionPreference = "Continue"
+$workspace = "D:\dev1405\Entropyk"
+$uiDir = "$workspace\apps\web"
+$apiLog = "$workspace\server.log"
+$uiLog = "$workspace\apps\web\next-dev.log"
+
+function Stop-Port($port) {
+    Get-NetTCPConnection -LocalPort $port -ErrorAction SilentlyContinue | ForEach-Object {
+        try { Stop-Process -Id $_.OwningProcess -Force -ErrorAction SilentlyContinue } catch {}
+    }
+}
+
+function Wait-Http($url, $timeoutSec = 60) {
+    $deadline = (Get-Date).AddSeconds($timeoutSec)
+    while ((Get-Date) -lt $deadline) {
+        try {
+            $r = Invoke-WebRequest -Uri $url -UseBasicParsing -TimeoutSec 3
+            if ($r.StatusCode -lt 500) { return $true }
+        } catch {}
+        Start-Sleep -Seconds 1
+    }
+    return $false
+}
+
+Write-Host "=== Entropyk launcher ===" -ForegroundColor Cyan
+
+# 1. Kill anything stale on 3030 and 3000
+Write-Host "[1/5] Killing stale processes on :3030 and :3000..." -ForegroundColor Yellow
+Get-CimInstance Win32_Process | Where-Object {
+    $_.Name -in @("ui-server.exe") -or
+    ($_.CommandLine -match "next dev" -and $_.CommandLine -match "apps.web") -or
+    ($_.CommandLine -match "cargo.*entropyk-demo.*ui-server")
+} | ForEach-Object {
+    Write-Host "  killing PID $($_.ProcessId) ($($_.Name))" -ForegroundColor DarkGray
+    try { Stop-Process -Id $_.ProcessId -Force -ErrorAction SilentlyContinue } catch {}
+}
+Stop-Port 3030
+Stop-Port 3000
+Start-Sleep -Seconds 2
+
+# 2. Build the API server (debug = ~10s)
+Write-Host "[2/5] Building Rust API server..." -ForegroundColor Yellow
+$build = Start-Process -FilePath "cargo" -ArgumentList "build","--package","entropyk-demo","--bin","ui-server" -WorkingDirectory $workspace -PassThru -NoNewWindow -Wait
+if ($build.ExitCode -ne 0) {
+    Write-Host "  BUILD FAILED (exit $($build.ExitCode))" -ForegroundColor Red
+    exit 1
+}
+Write-Host "  build OK" -ForegroundColor Green
+
+# 3. Start Rust API server (detached, with log redirect)
+Write-Host "[3/5] Starting Rust API server on :3030..." -ForegroundColor Yellow
+Remove-Item $apiLog -Force -ErrorAction SilentlyContinue
+$apiProc = Start-Process -FilePath "$workspace\target\debug\ui-server.exe" `
+    -WorkingDirectory $workspace `
+    -RedirectStandardOutput $apiLog `
+    -RedirectStandardError "$workspace\server-err.log" `
+    -PassThru -WindowStyle Hidden
+Write-Host "  PID $($apiProc.Id), waiting for health..." -ForegroundColor DarkGray
+
+if (-not (Wait-Http "http://localhost:3030/api/health" 30)) {
+    Write-Host "  API server failed to start! Log:" -ForegroundColor Red
+    Get-Content $apiLog -Tail 20 -ErrorAction SilentlyContinue
+    exit 1
+}
+Write-Host "  API server UP on :3030" -ForegroundColor Green
+
+# 4. Start Next.js dev server
+Write-Host "[4/5] Starting Next.js dev server on :3000..." -ForegroundColor Yellow
+Remove-Item $uiLog -Force -ErrorAction SilentlyContinue
+$uiProc = Start-Process -FilePath "cmd" -ArgumentList "/c","npm run dev > `"$uiLog`" 2>&1" `
+    -WorkingDirectory $uiDir `
+    -PassThru -WindowStyle Hidden
+Write-Host "  PID $($uiProc.Id), waiting for UI..." -ForegroundColor DarkGray
+
+if (-not (Wait-Http "http://localhost:3000" 60)) {
+    Write-Host "  UI failed to start! Log:" -ForegroundColor Red
+    Get-Content $uiLog -Tail 20 -ErrorAction SilentlyContinue
+    exit 1
+}
+Write-Host "  UI UP on :3000" -ForegroundColor Green
+
+# 5. Status
+Write-Host "[5/5] Final status:" -ForegroundColor Yellow
+try { $api = Invoke-WebRequest "http://localhost:3030/api/health" -UseBasicParsing -TimeoutSec 3; Write-Host "  API :3030 -> HTTP $($api.StatusCode)" -ForegroundColor Green } catch { Write-Host "  API :3030 -> DOWN" -ForegroundColor Red }
+try { $ui = Invoke-WebRequest "http://localhost:3000" -UseBasicParsing -TimeoutSec 3; Write-Host "  UI  :3000 -> HTTP $($ui.StatusCode)" -ForegroundColor Green } catch { Write-Host "  UI  :3000 -> DOWN" -ForegroundColor Red }
+
+Write-Host ""
+Write-Host "Both servers running." -ForegroundColor Green
+Write-Host "  UI:  http://localhost:3000" -ForegroundColor White
+Write-Host "  API: http://localhost:3030/api/health" -ForegroundColor White
+Write-Host ""
+Write-Host "Logs:" -ForegroundColor DarkGray
+Write-Host "  API: $apiLog" -ForegroundColor DarkGray
+Write-Host "  UI:  $uiLog" -ForegroundColor DarkGray
+Write-Host ""
+Write-Host "Open http://localhost:3000 in your browser." -ForegroundColor Cyan