diff --git a/bin/analyze-go b/bin/analyze-go
index 006f53d..1cbc8de 100755
Binary files a/bin/analyze-go and b/bin/analyze-go differ
diff --git a/bin/status-go b/bin/status-go
index b4deee2..5ebec4b 100755
Binary files a/bin/status-go and b/bin/status-go differ
diff --git a/cmd/analyze/constants.go b/cmd/analyze/constants.go
index 19331ed..5a00ac4 100644
--- a/cmd/analyze/constants.go
+++ b/cmd/analyze/constants.go
@@ -10,17 +10,17 @@ const (
 	defaultViewport       = 12                 // Default viewport when terminal height is unknown
 	overviewCacheTTL      = 7 * 24 * time.Hour // 7 days
 	overviewCacheFile     = "overview_sizes.json"
-	duTimeout             = 60 * time.Second // Increased for large directories
+	duTimeout             = 30 * time.Second // Fail faster to fallback to concurrent scan
 	mdlsTimeout           = 5 * time.Second
-	maxConcurrentOverview = 3                // Scan up to 3 overview dirs concurrently
+	maxConcurrentOverview = 8                // Increased parallel overview scans
 	batchUpdateSize       = 100              // Batch atomic updates every N items
 	cacheModTimeGrace     = 30 * time.Minute // Ignore minor directory mtime bumps
 
 	// Worker pool configuration
-	minWorkers         = 8                // Minimum workers for better I/O throughput
-	maxWorkers         = 64               // Maximum workers to avoid excessive goroutines
-	cpuMultiplier      = 2                // Worker multiplier per CPU core for I/O-bound operations
-	maxDirWorkers      = 16               // Maximum concurrent subdirectory scans
+	minWorkers         = 16               // Safe baseline for older machines
+	maxWorkers         = 64               // Cap at 64 to avoid OS resource contention
+	cpuMultiplier      = 4                // Balanced CPU usage
+	maxDirWorkers      = 32               // Limit concurrent subdirectory scans
 	openCommandTimeout = 10 * time.Second // Timeout for open/reveal commands
 )
 
diff --git a/cmd/analyze/main.go b/cmd/analyze/main.go
index 95755fe..707e4f8 100644
--- a/cmd/analyze/main.go
+++ b/cmd/analyze/main.go
@@ -376,7 +376,7 @@ func (m model) scanCmd(path string) tea.Cmd {
 }
 
 func tickCmd() tea.Cmd {
-	return tea.Tick(time.Millisecond*120, func(t time.Time) tea.Msg {
+	return tea.Tick(time.Millisecond*80, func(t time.Time) tea.Msg {
 		return tickMsg(t)
 	})
 }
@@ -429,7 +429,14 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.status = fmt.Sprintf("Scan failed: %v", msg.err)
 			return m, nil
 		}
-		m.entries = msg.result.Entries
+		// Filter out 0-byte items for cleaner view
+		filteredEntries := make([]dirEntry, 0, len(msg.result.Entries))
+		for _, e := range msg.result.Entries {
+			if e.Size > 0 {
+				filteredEntries = append(filteredEntries, e)
+			}
+		}
+		m.entries = filteredEntries
 		m.largeFiles = msg.result.LargeFiles
 		m.totalSize = msg.result.TotalSize
 		m.status = fmt.Sprintf("Scanned %s", humanizeBytes(m.totalSize))
@@ -639,7 +646,24 @@ func (m model) updateKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.scanning = false
 		return m, nil
 	case "r":
-		// Invalidate cache before rescanning to ensure fresh data
+		if m.inOverviewMode() {
+			// In overview mode, clear cache and re-scan known entries
+			m.overviewSizeCache = make(map[string]int64)
+			m.overviewScanningSet = make(map[string]bool)
+			m.hydrateOverviewEntries() // Reset sizes to pending
+
+			// Reset all entries to pending state for visual feedback
+			for i := range m.entries {
+				m.entries[i].Size = -1
+			}
+			m.totalSize = 0
+
+			m.status = "Refreshing..."
+			m.overviewScanning = true
+			return m, tea.Batch(m.scheduleOverviewScans(), tickCmd())
+		}
+
+		// Normal mode: Invalidate cache before rescanning
 		invalidateCache(m.path)
 		m.status = "Refreshing..."
 		m.scanning = true
diff --git a/cmd/analyze/scanner.go b/cmd/analyze/scanner.go
index 8bab00c..73f7756 100644
--- a/cmd/analyze/scanner.go
+++ b/cmd/analyze/scanner.go
@@ -97,7 +97,17 @@ func scanPathConcurrent(root string, filesScanned, dirsScanned, bytesScanned *in
 		// Skip symlinks to avoid following them into unexpected locations
 		// Use Type() instead of IsDir() to check without following symlinks
 		if child.Type()&fs.ModeSymlink != 0 {
-			// For symlinks, get their target info but mark them specially
+			// For symlinks, check if they point to a directory
+			targetInfo, err := os.Stat(fullPath)
+			isDir := false
+			if err == nil && targetInfo.IsDir() {
+				isDir = true
+			}
+
+			// Get symlink size (we don't effectively count the target size towards parent to avoid double counting,
+			// or we just count the link size itself. Existing logic counts 'size' via getActualFileSize on the link info).
+			// Ideally we just want navigation.
+			// Re-fetching info for link itself if needed, but child.Info() does that.
 			info, err := child.Info()
 			if err != nil {
 				continue
@@ -109,7 +119,7 @@ func scanPathConcurrent(root string, filesScanned, dirsScanned, bytesScanned *in
 				Name:       child.Name() + " →", // Add arrow to indicate symlink
 				Path:       fullPath,
 				Size:       size,
-				IsDir:      false, // Don't allow navigation into symlinks
+				IsDir:      isDir, // Allow navigation if target is directory
 				LastAccess: getLastAccessTimeFromInfo(info),
 			}
 			continue
@@ -287,7 +297,7 @@ func calculateDirSizeFast(root string, filesScanned, dirsScanned, bytesScanned *
 		default:
 		}
 
-		if currentPath != nil {
+		if currentPath != nil && atomic.LoadInt64(filesScanned)%int64(batchUpdateSize) == 0 {
 			*currentPath = dirPath
 		}
 
@@ -496,8 +506,9 @@ func calculateDirSizeConcurrent(root string, largeFileChan chan<- fileEntry, fil
 			largeFileChan <- fileEntry{Name: child.Name(), Path: fullPath, Size: size}
 		}
 
-		// Update current path
-		if currentPath != nil {
+
+		// Update current path occasionally to prevent UI jitter
+		if currentPath != nil && atomic.LoadInt64(filesScanned)%int64(batchUpdateSize) == 0 {
 			*currentPath = fullPath
 		}
 	}
diff --git a/cmd/analyze/view.go b/cmd/analyze/view.go
index e2b50c8..e76bb75 100644
--- a/cmd/analyze/view.go
+++ b/cmd/analyze/view.go
@@ -323,18 +323,18 @@ func (m model) View() string {
 	if m.inOverviewMode() {
 		// Show ← Back if there's history (entered from a parent directory)
 		if len(m.history) > 0 {
-			fmt.Fprintf(&b, "%s↑↓←→  |  Enter  |  R Refresh  |  O Open  |  F File  |  ← Back  |  Q Quit%s\n", colorGray, colorReset)
+			fmt.Fprintf(&b, "%s↑↓←→ | Enter | R Refresh | O Open | F File | ← Back | Q Quit%s\n", colorGray, colorReset)
 		} else {
-			fmt.Fprintf(&b, "%s↑↓→  |  Enter  |  R Refresh  |  O Open  |  F File  |  Q Quit%s\n", colorGray, colorReset)
+			fmt.Fprintf(&b, "%s↑↓→ | Enter | R Refresh | O Open | F File | Q Quit%s\n", colorGray, colorReset)
 		}
 	} else if m.showLargeFiles {
-		fmt.Fprintf(&b, "%s↑↓←  |  R Refresh  |  O Open  |  F File  |  ⌫ Del  |  ← Back  |  Q Quit%s\n", colorGray, colorReset)
+		fmt.Fprintf(&b, "%s↑↓← | R Refresh | O Open | F File | ⌫ Del | ← Back | Q Quit%s\n", colorGray, colorReset)
 	} else {
 		largeFileCount := len(m.largeFiles)
 		if largeFileCount > 0 {
-			fmt.Fprintf(&b, "%s↑↓←→  |  Enter  |  R Refresh  |  O Open  |  F File  |  ⌫ Del  |  T Top(%d)  |  Q Quit%s\n", colorGray, largeFileCount, colorReset)
+			fmt.Fprintf(&b, "%s↑↓←→ | Enter | R Refresh | O Open | F File | ⌫ Del | T Top(%d) | Q Quit%s\n", colorGray, largeFileCount, colorReset)
 		} else {
-			fmt.Fprintf(&b, "%s↑↓←→  |  Enter  |  R Refresh  |  O Open  |  F File  |  ⌫ Del  |  Q Quit%s\n", colorGray, colorReset)
+			fmt.Fprintf(&b, "%s↑↓←→ | Enter | R Refresh | O Open | F File | ⌫ Del | Q Quit%s\n", colorGray, colorReset)
 		}
 	}
 	if m.deleteConfirm && m.deleteTarget != nil {
diff --git a/lib/check/health_json.sh b/lib/check/health_json.sh
index fa6bcf5..ae8fc1b 100644
--- a/lib/check/health_json.sh
+++ b/lib/check/health_json.sh
@@ -130,7 +130,7 @@ EOF
     items+=('mail_downloads|Mail Downloads|Clear old mail attachments (> 30 days)|true')
     items+=('swap_cleanup|Swap Refresh|Reset swap files and dynamic pager|true')
     items+=('spotlight_cache_cleanup|Spotlight Cache|Clear user-level Spotlight indexes|true')
-    items+=('developer_cleanup|Developer Cleanup|Clear Xcode DerivedData & DeviceSupport|false')
+    items+=('developer_cleanup|Developer Cleanup|Clear Xcode DerivedData & DeviceSupport|true')
 
     # Output items as JSON
     local first=true
diff --git a/lib/ui/menu_paginated.sh b/lib/ui/menu_paginated.sh
index 9672490..fbae704 100755
--- a/lib/ui/menu_paginated.sh
+++ b/lib/ui/menu_paginated.sh
@@ -510,10 +510,10 @@ paginated_multi_select() {
                         "${GRAY}${ICON_NAV_UP}${ICON_NAV_DOWN}${NC}"
                         "${GRAY}Space Select${NC}"
                         "${GRAY}Enter${NC}"
-                        "${GRAY}F Refresh${NC}"
+                        "${GRAY}R Refresh${NC}"
                         "${GRAY}${filter_text}${NC}"
                         "${GRAY}S ${sort_status}${NC}"
-                        "${GRAY}R ${reverse_arrow}${NC}"
+                        "${GRAY}O ${reverse_arrow}${NC}"
                         "${GRAY}Q Exit${NC}"
                     )
                     _print_wrapped_controls "$sep" "${_segs_all[@]}"
@@ -641,20 +641,60 @@ paginated_multi_select() {
                     rebuild_view
                 fi
                 ;;
+            "CHAR:j")
+                if [[ "$filter_mode" != "true" ]]; then
+                    # Down navigation
+                    if [[ ${#view_indices[@]} -gt 0 ]]; then
+                        local absolute_index=$((top_index + cursor_pos))
+                        local last_index=$((${#view_indices[@]} - 1))
+                        if [[ $absolute_index -lt $last_index ]]; then
+                            local visible_count=$((${#view_indices[@]} - top_index))
+                            [[ $visible_count -gt $items_per_page ]] && visible_count=$items_per_page
+                            if [[ $cursor_pos -lt $((visible_count - 1)) ]]; then
+                                ((cursor_pos++))
+                            elif [[ $((top_index + visible_count)) -lt ${#view_indices[@]} ]]; then
+                                ((top_index++))
+                            fi
+                        fi
+                    fi
+                else
+                    filter_query+="j"
+                fi
+                ;;
+            "CHAR:k")
+                if [[ "$filter_mode" != "true" ]]; then
+                    # Up navigation
+                    if [[ ${#view_indices[@]} -gt 0 ]]; then
+                        if [[ $cursor_pos -gt 0 ]]; then
+                            ((cursor_pos--))
+                        elif [[ $top_index -gt 0 ]]; then
+                            ((top_index--))
+                        fi
+                    fi
+                else
+                    filter_query+="k"
+                fi
+                ;;
             "CHAR:f" | "CHAR:F")
+                if [[ "$filter_mode" == "true" ]]; then
+                    filter_query+="${key#CHAR:}"
+                fi
+                # F is currently unbound in normal mode to avoid conflict with Refresh (R)
+                ;;
+            "CHAR:r" | "CHAR:R")
                 if [[ "$filter_mode" == "true" ]]; then
                     filter_query+="${key#CHAR:}"
                 else
-                    # Trigger Refresh signal
+                    # Trigger Refresh signal (Unified with Analyze)
                     cleanup
                     return 10
                 fi
                 ;;
-            "CHAR:r")
-                # lower-case r: behave like reverse when NOT in filter mode
+            "CHAR:o" | "CHAR:O")
                 if [[ "$filter_mode" == "true" ]]; then
-                    filter_query+="r"
-                else
+                    filter_query+="${key#CHAR:}"
+                elif [[ "$has_metadata" == "true" ]]; then
+                    # O toggles reverse order (Unified Sort Order)
                     if [[ "$sort_reverse" == "true" ]]; then
                         sort_reverse="false"
                     else
diff --git a/lib/ui/menu_simple.sh b/lib/ui/menu_simple.sh
index 4e43fbc..f384024 100755
--- a/lib/ui/menu_simple.sh
+++ b/lib/ui/menu_simple.sh
@@ -212,7 +212,7 @@ paginated_multi_select() {
 
         # Clear any remaining lines at bottom
         printf "${clear_line}\n" >&2
-        printf "${clear_line}${GRAY}${ICON_NAV_UP}${ICON_NAV_DOWN}  |  Space  |  Enter  |  Q Exit${NC}\n" >&2
+        printf "${clear_line}${GRAY}${ICON_NAV_UP}${ICON_NAV_DOWN} | Space | Enter | Q Exit${NC}\n" >&2
 
         # Clear one more line to ensure no artifacts
         printf "${clear_line}" >&2