diff --git a/Borealis.ps1 b/Borealis.ps1
index f921b818..ab6c34e6 100644
--- a/Borealis.ps1
+++ b/Borealis.ps1
@@ -270,6 +270,41 @@ function Ensure-EngineWebInterface {
     }
 }
 
+function Get-WebUiLatestWriteTime {
+    param([string]$Root)
+
+    if (-not (Test-Path $Root)) { return $null }
+
+    $exclusions = @('\node_modules\', '\build\', '\dist\')
+    $files = Get-ChildItem -Path $Root -Recurse -File -ErrorAction SilentlyContinue | Where-Object {
+        $full = $_.FullName
+        -not ($exclusions | Where-Object { $full -like "*$_*" })
+    }
+    if (-not $files) { return $null }
+    return ($files | Sort-Object -Property LastWriteTime -Descending | Select-Object -First 1).LastWriteTime
+}
+
+function Test-WebUiBuildFresh {
+    param(
+        [string]$SourceRoot,
+        [string]$BuildRoot
+    )
+
+    $sourceLatest = Get-WebUiLatestWriteTime -Root $SourceRoot
+    if (-not $sourceLatest) { return $false }
+
+    $buildIndex = Join-Path $BuildRoot 'index.html'
+    if (-not (Test-Path $buildIndex -PathType Leaf)) { return $false }
+
+    try {
+        $buildTime = (Get-Item $buildIndex -ErrorAction Stop).LastWriteTime
+    } catch {
+        return $false
+    }
+
+    return ($buildTime -ge $sourceLatest)
+}
+
 $script:Utf8CodePageChanged = $false
 
 function Ensure-SystemUtf8CodePage {
@@ -1184,6 +1219,16 @@ switch ($choice) {
             }
         }
 
+        if ($engineImmediateLaunch) {
+            $webUiSourceRoot = Join-Path $scriptDir 'Data\Engine\web-interface'
+            $webUiBuildRoot  = Join-Path $scriptDir 'Engine\web-interface\build'
+            $webUiFresh = Test-WebUiBuildFresh -SourceRoot $webUiSourceRoot -BuildRoot $webUiBuildRoot
+            if (-not $webUiFresh) {
+                Write-Host "Detected WebUI changes newer than the last production build. Running full build instead of Quick/Skip." -ForegroundColor Yellow
+                $engineImmediateLaunch = $false
+            }
+        }
+
         if ($engineModeChoice -notin @('1','2','3')) {
             break
         }
diff --git a/Data/Engine/bootstrapper.py b/Data/Engine/bootstrapper.py
index 5d4bc2a1..08d008f9 100644
--- a/Data/Engine/bootstrapper.py
+++ b/Data/Engine/bootstrapper.py
@@ -88,6 +88,25 @@ def _stage_web_interface_assets(logger: Optional[logging.Logger] = None, *, forc
     engine_web_root = project_root / "Engine" / "web-interface"
     modern_source = project_root / "Data" / "Engine" / "web-interface"
 
+    def _latest_mtime(root: Path) -> Optional[float]:
+        """Return the most recent mtime under root, excluding build artifacts."""
+
+        try:
+            candidates = []
+            for path in root.rglob("*"):
+                # Skip heavy/ephemeral directories so we only compare source files
+                if any(part in {"node_modules", "build", "dist"} for part in path.parts):
+                    continue
+                try:
+                    stat = path.stat()
+                except OSError:
+                    continue
+                if path.is_file():
+                    candidates.append(stat.st_mtime)
+            return max(candidates) if candidates else None
+        except Exception:
+            return None
+
     if not modern_source.is_dir():
         raise RuntimeError(
             f"Engine web interface source missing: {modern_source}"
@@ -95,8 +114,15 @@ def _stage_web_interface_assets(logger: Optional[logging.Logger] = None, *, forc
 
     index_path = engine_web_root / "index.html"
     if engine_web_root.exists() and index_path.is_file() and not force:
-        logger.info("Engine web interface already staged at %s; skipping copy.", engine_web_root)
-        return engine_web_root
+        source_mtime = _latest_mtime(modern_source)
+        dest_mtime = _latest_mtime(engine_web_root)
+        if dest_mtime is not None and source_mtime is not None and dest_mtime >= source_mtime:
+            logger.info("Engine web interface already staged at %s; skipping copy (destination up-to-date).", engine_web_root)
+            return engine_web_root
+        logger.info(
+            "Engine web interface detected newer source assets; refreshing staging directory %s.",
+            engine_web_root,
+        )
 
     if engine_web_root.exists():
         shutil.rmtree(engine_web_root)
diff --git a/Data/Engine/web-interface/src/App.jsx b/Data/Engine/web-interface/src/App.jsx
index bbd8c701..3a0bf18e 100644
--- a/Data/Engine/web-interface/src/App.jsx
+++ b/Data/Engine/web-interface/src/App.jsx
@@ -1092,10 +1092,6 @@ const LOCAL_STORAGE_KEY = "borealis_persistent_state";
     [navigateTo, setTabs, setActiveTabId]
   );
 
-  useEffect(() => {
-    setPageHeader({ title: "", subtitle: "", Icon: null });
-  }, [currentPage]);
-
   const isAdmin = (String(userRole || '').toLowerCase() === 'admin');
 
   useEffect(() => {