diff --git a/scripts/install.ps1 b/scripts/install.ps1
index 73181ed..474e953 100644
--- a/scripts/install.ps1
+++ b/scripts/install.ps1
@@ -210,6 +210,51 @@ function Start-Worker {
     }
 }
 
+function Test-OptionalDependencies {
+    $missingDeps = @()
+
+    # Check for Python 3.13+
+    try {
+        $pythonVersion = & python --version 2>&1
+        if ($pythonVersion -match "Python (\d+)\.(\d+)") {
+            $major = [int]$Matches[1]
+            $minor = [int]$Matches[2]
+            if ($major -lt 3 -or ($major -eq 3 -and $minor -lt 13)) {
+                $missingDeps += "Python 3.13+ (found $major.$minor)"
+            }
+        }
+    } catch {
+        $missingDeps += "Python 3.13+"
+    }
+
+    # Check for uvx
+    try {
+        $null = Get-Command uvx -ErrorAction Stop
+    } catch {
+        $missingDeps += "uvx"
+    }
+
+    if ($missingDeps.Count -gt 0) {
+        Write-Host ""
+        Write-Warn "Optional dependencies missing (needed for semantic search):"
+        foreach ($dep in $missingDeps) {
+            Write-Host "  - $dep"
+        }
+        Write-Host ""
+        Write-Info "Install on Windows:"
+        Write-Host "  winget install Python.Python.3.13"
+        Write-Host "  pip install uv"
+        Write-Host ""
+        Write-Info "Note: Requires Python 3.13+."
+        Write-Host ""
+        Write-Info "Semantic search will be disabled until these are installed."
+        Write-Info "Core functionality (SQLite storage, full-text search) will work."
+        Write-Host ""
+    } else {
+        Write-Success "Optional dependencies found (semantic search enabled)"
+    }
+}
+
 function Uninstall-ClaudeMnemonic {
     param([switch]$KeepData)
 
@@ -286,6 +331,7 @@ Write-Info "Installing version: $Version"
 Install-Release -Version $Version
 Register-Plugin -Version $Version
 Start-Worker
+Test-OptionalDependencies
 
 Write-Host ""
 Write-Host "================================================================" -ForegroundColor Green
diff --git a/scripts/install.sh b/scripts/install.sh
index 95334ed..00d7400 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -133,26 +133,43 @@ download_release() {
     tmp_dir=$(mktemp -d)
     trap "rm -rf $tmp_dir" EXIT
 
-    # Construct download URL
-    local archive_name="claude-mnemonic_${version#v}_${platform}.tar.gz"
+    # Construct download URL (use .zip for Windows, .tar.gz for others)
+    local archive_ext="tar.gz"
+    if [[ "$platform" == windows_* ]]; then
+        archive_ext="zip"
+    fi
+    local archive_name="claude-mnemonic_${version#v}_${platform}.${archive_ext}"
     local download_url="https://github.com/${GITHUB_REPO}/releases/download/${version}/${archive_name}"
 
     info "Downloading ${archive_name}..."
 
-    if ! curl -sSL -o "$tmp_dir/release.tar.gz" "$download_url"; then
+    if ! curl -sSL -o "$tmp_dir/release.${archive_ext}" "$download_url"; then
         error "Failed to download release from: $download_url"
     fi
 
     info "Extracting archive..."
-    if ! tar -xzf "$tmp_dir/release.tar.gz" -C "$tmp_dir"; then
-        error "Failed to extract archive"
+    if [[ "$archive_ext" == "zip" ]]; then
+        if ! unzip -q "$tmp_dir/release.zip" -d "$tmp_dir"; then
+            error "Failed to extract archive"
+        fi
+    else
+        if ! tar -xzf "$tmp_dir/release.tar.gz" -C "$tmp_dir"; then
+            error "Failed to extract archive"
+        fi
     fi
 
     # Stop existing worker if running
     info "Stopping existing worker (if running)..."
     pkill -9 -f 'claude-mnemonic.*worker' 2>/dev/null || true
     pkill -9 -f '\.claude/plugins/.*/worker' 2>/dev/null || true
-    lsof -ti :37777 | xargs kill -9 2>/dev/null || true
+    # Kill process on port 37777 (use lsof on macOS, ss/fuser on Linux)
+    if command -v lsof &> /dev/null; then
+        lsof -ti :37777 | xargs kill -9 2>/dev/null || true
+    elif command -v ss &> /dev/null; then
+        ss -tlnp 'sport = :37777' 2>/dev/null | awk 'NR>1 {print $6}' | grep -oP 'pid=\K[0-9]+' | xargs -r kill -9 2>/dev/null || true
+    elif command -v fuser &> /dev/null; then
+        fuser -k 37777/tcp 2>/dev/null || true
+    fi
     sleep 1
 
     # Create installation directories
@@ -327,18 +344,18 @@ check_optional_deps() {
         case "$(uname -s)" in
             Darwin)
                 info "Install on macOS:"
-                echo "  brew install python3"
-                echo "  pip3 install uvx"
+                echo "  brew install python@3.13"
+                echo "  pip3 install uv"
                 ;;
             Linux)
                 info "Install on Linux:"
                 echo "  sudo apt install python3 python3-pip"
-                echo "  pip3 install uvx"
+                echo "  pip3 install uv"
                 ;;
             MINGW*|MSYS*|CYGWIN*)
                 info "Install on Windows:"
-                echo "  winget install Python.Python.3"
-                echo "  pip install uvx"
+                echo "  winget install Python.Python.3.13"
+                echo "  pip install uv"
                 ;;
         esac
         echo ""
@@ -433,7 +450,14 @@ if [[ "${1:-}" == "--uninstall" ]]; then
     info "Stopping worker processes..."
     pkill -9 -f 'claude-mnemonic.*worker' 2>/dev/null || true
     pkill -9 -f '\.claude/plugins/.*/worker' 2>/dev/null || true
-    lsof -ti :37777 | xargs kill -9 2>/dev/null || true
+    # Kill process on port 37777 (use lsof on macOS, ss/fuser on Linux)
+    if command -v lsof &> /dev/null; then
+        lsof -ti :37777 | xargs kill -9 2>/dev/null || true
+    elif command -v ss &> /dev/null; then
+        ss -tlnp 'sport = :37777' 2>/dev/null | awk 'NR>1 {print $6}' | grep -oP 'pid=\K[0-9]+' | xargs -r kill -9 2>/dev/null || true
+    elif command -v fuser &> /dev/null; then
+        fuser -k 37777/tcp 2>/dev/null || true
+    fi
     sleep 1
 
     info "Removing plugin directories..."
diff --git a/scripts/uninstall.ps1 b/scripts/uninstall.ps1
index 8b158be..2b318d0 100644
--- a/scripts/uninstall.ps1
+++ b/scripts/uninstall.ps1
@@ -67,10 +67,19 @@ try {
 
     if (Test-Path $SettingsFile) {
         $Settings = Get-Content $SettingsFile -Raw | ConvertFrom-Json
+        $modified = $false
         if ($Settings.enabledPlugins -and $Settings.enabledPlugins.PSObject.Properties[$PluginKey]) {
             $Settings.enabledPlugins.PSObject.Properties.Remove($PluginKey)
+            $modified = $true
+        }
+        # Remove statusline if it's ours
+        if ($Settings.statusLine -and $Settings.statusLine.command -match "claude-mnemonic") {
+            $Settings.PSObject.Properties.Remove("statusLine")
+            $modified = $true
+        }
+        if ($modified) {
             $Settings | ConvertTo-Json -Depth 10 | Out-File -Encoding UTF8 $SettingsFile
-            Write-Success "Removed from settings.json"
+            Write-Success "Removed from settings.json (including statusline)"
         }
     }
 
diff --git a/scripts/uninstall.sh b/scripts/uninstall.sh
index 2dd48ad..b6f0ba6 100755
--- a/scripts/uninstall.sh
+++ b/scripts/uninstall.sh
@@ -51,7 +51,14 @@ echo ""
 info "Stopping worker processes..."
 pkill -9 -f 'claude-mnemonic.*worker' 2>/dev/null || true
 pkill -9 -f '\.claude/plugins/.*/worker' 2>/dev/null || true
-lsof -ti :37777 | xargs kill -9 2>/dev/null || true
+# Kill process on port 37777 (use lsof on macOS, ss/fuser on Linux)
+if command -v lsof &> /dev/null; then
+    lsof -ti :37777 | xargs kill -9 2>/dev/null || true
+elif command -v ss &> /dev/null; then
+    ss -tlnp 'sport = :37777' 2>/dev/null | awk 'NR>1 {print $6}' | grep -oP 'pid=\K[0-9]+' | xargs -r kill -9 2>/dev/null || true
+elif command -v fuser &> /dev/null; then
+    fuser -k 37777/tcp 2>/dev/null || true
+fi
 sleep 1
 success "Worker processes stopped"
 
@@ -79,8 +86,9 @@ if command -v jq &> /dev/null; then
     fi
 
     if [[ -f "$SETTINGS_FILE" ]]; then
-        jq 'del(.enabledPlugins["'"$PLUGIN_KEY"'"])' "$SETTINGS_FILE" > "${SETTINGS_FILE}.tmp" && mv "${SETTINGS_FILE}.tmp" "$SETTINGS_FILE"
-        success "Removed from settings.json"
+        # Remove plugin from enabled plugins and remove statusline if it's ours
+        jq 'del(.enabledPlugins["'"$PLUGIN_KEY"'"]) | if .statusLine.command | test("claude-mnemonic") then del(.statusLine) else . end' "$SETTINGS_FILE" > "${SETTINGS_FILE}.tmp" && mv "${SETTINGS_FILE}.tmp" "$SETTINGS_FILE"
+        success "Removed from settings.json (including statusline)"
     fi
 
     if [[ -f "$MARKETPLACES_FILE" ]]; then
diff --git a/ui/package-lock.json b/ui/package-lock.json
index 03c65bb..ac97210 100644
--- a/ui/package-lock.json
+++ b/ui/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "claude-mnemonic-dashboard",
-  "version": "v0.6.1-3-gd68a700-dirty",
+  "version": "v0.6.1-4-g0a0dfc1-dirty",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "claude-mnemonic-dashboard",
-      "version": "v0.6.1-3-gd68a700-dirty",
+      "version": "v0.6.1-4-g0a0dfc1-dirty",
       "dependencies": {
         "vue": "^3.5.13"
       },
diff --git a/ui/package.json b/ui/package.json
index f51d0c6..d72f755 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "claude-mnemonic-dashboard",
-  "version": "v0.6.1-3-gd68a700-dirty",
+  "version": "v0.6.1-4-g0a0dfc1-dirty",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/ui/src/composables/useSSE.ts b/ui/src/composables/useSSE.ts
index 3e78b5a..035d8c1 100644
--- a/ui/src/composables/useSSE.ts
+++ b/ui/src/composables/useSSE.ts
@@ -61,11 +61,38 @@ export function useSSE() {
     isConnected.value = false
   }
 
+  // Handle page unload/refresh to ensure SSE connection is closed immediately
+  const handleBeforeUnload = () => {
+    disconnect()
+  }
+
+  // Handle pagehide for mobile browsers and bfcache
+  const handlePageHide = (event: PageTransitionEvent) => {
+    if (event.persisted) {
+      // Page is being cached (bfcache), disconnect but don't prevent reconnect
+      disconnect()
+    }
+  }
+
+  // Handle pageshow to reconnect if page was restored from bfcache
+  const handlePageShow = (event: PageTransitionEvent) => {
+    if (event.persisted && !eventSource) {
+      connect()
+    }
+  }
+
   onMounted(() => {
+    // Add listeners to close SSE on page refresh/navigation
+    window.addEventListener('beforeunload', handleBeforeUnload)
+    window.addEventListener('pagehide', handlePageHide)
+    window.addEventListener('pageshow', handlePageShow)
     connect()
   })
 
   onUnmounted(() => {
+    window.removeEventListener('beforeunload', handleBeforeUnload)
+    window.removeEventListener('pagehide', handlePageHide)
+    window.removeEventListener('pageshow', handlePageShow)
     disconnect()
   })