fix: auto-start local adb daemon and optimize path discovery across Linux, macOS and Windows

scripts/start.ps1

@@ -34,7 +34,9 @@ function Update-EnvironmentPath {
     $standardDirs = @(
         "$env:LOCALAPPDATA\Microsoft\WinGet\Links",
         "$env:LOCALAPPDATA\Android\Sdk\platform-tools",
+        "$env:LOCALAPPDATA\Android\android-sdk\platform-tools",
         "$env:ProgramFiles\Android\platform-tools",
+        "${env:ProgramFiles(x86)}\Android\android-sdk\platform-tools",
         "$env:ProgramFiles\nodejs",
         "${env:ProgramFiles(x86)}\nodejs",
         "$env:APPDATA\npm",
@@ -42,16 +44,34 @@ function Update-EnvironmentPath {
         "$env:LOCALAPPDATA\Programs\node",
         "$env:USERPROFILE\.local\share\platform-tools",
         "$env:USERPROFILE\.local\share\node",
+        "$env:LOCALAPPDATA\nvm",
+        "$env:ProgramData\nvm",
         "C:\ProgramData\chocolatey\bin",
         "$env:USERPROFILE\scoop\shims",
         "$env:USERPROFILE\.local\bin",
         "$env:USERPROFILE\.cargo\bin"
     )
+    if ($env:ANDROID_HOME) { $standardDirs += "$env:ANDROID_HOME\platform-tools" }
+    if ($env:ANDROID_SDK_ROOT) { $standardDirs += "$env:ANDROID_SDK_ROOT\platform-tools" }
+    if ($env:NVM_HOME) { $standardDirs += $env:NVM_HOME }
+    if ($env:NVM_SYMLINK) { $standardDirs += $env:NVM_SYMLINK }
+
     $regPath = [Environment]::GetEnvironmentVariable("Path", "User") + ";" + [Environment]::GetEnvironmentVariable("Path", "Machine")
     $currentPaths = ($env:PATH -split ";") + ($regPath -split ";") + $standardDirs | Where-Object { [string]::IsNullOrWhiteSpace($_) -eq $false -and (Test-Path $_) } | Select-Object -Unique
     $env:PATH = $currentPaths -join ";"
 }
 
+function Start-LocalAdbServer {
+    if (Test-CommandExists "adb") {
+        try {
+            $origSocket = $env:ADB_SERVER_SOCKET
+            Remove-Item Env:\ADB_SERVER_SOCKET -ErrorAction SilentlyContinue
+            & adb start-server 2>$null | Out-Null
+            if ($origSocket) { $env:ADB_SERVER_SOCKET = $origSocket }
+        } catch {}
+    }
+}
+
 function Test-CommandExists {
     param([string]$Command)
     $res = Get-Command $Command -ErrorAction SilentlyContinue
@@ -164,6 +184,9 @@ if ($missingCore.Count -gt 0) {
     }
 }
 
+# Ensure local ADB daemon is warm & listening so probes do not hit 'Connection refused'
+Start-LocalAdbServer
+
 # 4. Check or initialize .env
 if (-not (Test-Path ".env")) {
     if (Test-Path ".env.example") {
@@ -259,6 +282,9 @@ if ($installMcp -match "^[Yy]") {
 Write-Host ""
 
 # 8. Launch unified Showcase UI & open browser
+# Ensure local ADB daemon is warm & listening
+Start-LocalAdbServer
+
 # Launch via `python -m artemis` (not the `artemis.exe` console-script shim) so the
 # long-running server never locks .venv\Scripts\artemis.exe against `uv sync` reinstalls.
 Write-Host "   [INFO] Launching Artemis Showcase UI & Admin Console..." -ForegroundColor Green