Fix Windows smoke: force IPv4 on session URL + add failure diagnostics

Linux smoke passes after the auth fix, but Windows still failed. The daemon
binds IPv4 127.0.0.1 while session URLs use 'localhost', which PowerShell's
Invoke-WebRequest resolves to IPv6 ::1 first on Windows and fails to connect —
so the session-scoped /api/diff call never succeeded. Rewrite the session URL
host to 127.0.0.1 before requesting. Also print token/sessions/url/api diag on
failure so the next run is conclusive if this isn't the whole story.

Author: backnotprop

.github/workflows/release.yml

@@ -249,6 +249,10 @@ jobs:
             # from the state file; send it as a bearer token or requests 401.
             $dataDir = if ($env:PLANNOTATOR_DATA_DIR) { $env:PLANNOTATOR_DATA_DIR } else { Join-Path $env:USERPROFILE ".plannotator" }
             $stateFile = Join-Path $dataDir "daemon.json"
+            $diagToken = $false
+            $diagSessions = "(none)"
+            $diagSessionUrl = "(none)"
+            $diagApi = "(not reached)"
             try {
               for ($i = 0; $i -lt 60; $i++) {
                 try {
@@ -257,17 +261,25 @@ jobs:
                     $token = (Get-Content $stateFile -Raw | ConvertFrom-Json).authToken
                   }
                   if ($token) {
+                    $diagToken = $true
                     $headers = @{ Authorization = "Bearer $token" }
-                    $sessionsResponse = Invoke-WebRequest -Uri "http://127.0.0.1:$Port/daemon/sessions" -Headers $headers -UseBasicParsing -TimeoutSec 1
+                    $sessionsResponse = Invoke-WebRequest -Uri "http://127.0.0.1:$Port/daemon/sessions" -Headers $headers -UseBasicParsing -TimeoutSec 2
+                    $diagSessions = "HTTP $($sessionsResponse.StatusCode)"
                     $sessionsBody = $sessionsResponse.Content | ConvertFrom-Json
                     if ($sessionsBody.sessions.Count -gt 0) {
-                      $sessionUrl = $sessionsBody.sessions[0].url
-                      Invoke-WebRequest -Uri "$sessionUrl$Endpoint" -Headers $headers -UseBasicParsing -TimeoutSec 1 | Out-Null
+                      # The daemon binds IPv4 127.0.0.1, but the session url uses
+                      # "localhost", which Invoke-WebRequest resolves to IPv6 ::1
+                      # first on Windows and then fails to connect. Force IPv4.
+                      $sessionUrl = ($sessionsBody.sessions[0].url) -replace '://localhost:', '://127.0.0.1:'
+                      $diagSessionUrl = $sessionUrl
+                      $apiResponse = Invoke-WebRequest -Uri "$sessionUrl$Endpoint" -Headers $headers -UseBasicParsing -TimeoutSec 2
+                      $diagApi = "HTTP $($apiResponse.StatusCode)"
                       $ok = $true
                       break
                     }
                   }
                 } catch {
+                  $diagApi = "exception: $($_.Exception.Message)"
                   if ($process.HasExited) {
                     break
                   }
@@ -284,6 +296,8 @@ jobs:
             }
 
             if (-not $ok) {
+              Write-Host "diag: stateFile=$stateFile exists=$(Test-Path $stateFile) tokenSeen=$diagToken"
+              Write-Host "diag: sessions=$diagSessions sessionUrl=$diagSessionUrl api=$diagApi"
               Write-Host "stdout:"
               Get-Content $stdout -ErrorAction SilentlyContinue
               Write-Host "stderr:"