[eric] 1.0.26 windows-only: fix subscription OAuth + perf pass

Connecting→Connect mid-flow on Windows: 9router callback hardcoded
  localhost:8324 (dies when backend lands on 8325+)

scripts/build-app-win.ps1

@@ -206,7 +206,7 @@ function Copy-Excluded($Source, $Dest, $Exclude) {
 
 Copy-Excluded `
     (Join-Path $ProjectRoot 'backend') (Join-Path $Staging 'backend') `
-    @{ Dirs = @('__pycache__','.venv','tools'); Files = @('*.pyc') }
+    @{ Dirs = @('__pycache__','.venv','tools','tests'); Files = @('*.pyc') }
 New-Item -ItemType Directory -Force -Path (Join-Path $Staging 'backend\data\tools') | Out-Null
 
 Copy-Excluded `

scripts/build-app.sh

@@ -172,6 +172,7 @@ rsync -a \
     --exclude='__pycache__' --exclude='**/__pycache__' \
     --exclude='*.pyc' --exclude='.venv' \
     --exclude='data/tools' \
+    --exclude='tests' --exclude='**/tests' \
     "$PROJECT_ROOT/backend/" "$STAGING_DIR/backend/"
 # Create empty tools directory so the app has a place to write
 mkdir -p "$STAGING_DIR/backend/data/tools"