fix/keep-selected-package-in-ui-on-resize

src/interactive-ui.ts

@@ -253,7 +253,7 @@ export class InteractiveUI {
           case 'resize':
             const heightChanged = stateManager.updateTerminalHeight(action.height)
             if (heightChanged) {
-              stateManager.resetForResize()
+              stateManager.resetForResize(filteredStates.length)
             } else {
               // Even if height didn't change, width might have changed
               // Force a full re-render to clear any wrapping issues
@@ -451,7 +451,8 @@ export class InteractiveUI {
         // This handles cases where process.stdout.rows might not be accurate at startup
         const currentHeight = this.getTerminalHeight()
         if (stateManager.updateTerminalHeight(currentHeight)) {
-          stateManager.resetForResize()
+          const initialFiltered = stateManager.getFilteredStates(states)
+          stateManager.resetForResize(initialFiltered.length)
         }
 
         // Initial render

src/ui/state/navigation-manager.ts

@@ -156,9 +156,9 @@ export class NavigationManager {
     if (targetVisualIndex < this.state.scrollOffset) {
       this.state.scrollOffset = targetVisualIndex
     }
-    // Scrolling down: scroll down by 1 item (smooth scrolling)
+    // Scrolling down: adjust scroll to keep item visible
     else if (visualIndex >= this.state.scrollOffset + this.maxVisibleItems) {
-      this.state.scrollOffset += 1
+      this.state.scrollOffset = visualIndex - this.maxVisibleItems + 1
     }
 
     // Ensure scrollOffset doesn't go negative or beyond bounds

src/ui/state/state-manager.ts

@@ -208,8 +208,10 @@ export class StateManager {
 
   exitFilterMode(clearQuery: boolean = false): void {
     this.filterManager.exitFilterMode(clearQuery)
-    this.navigationManager.setCurrentRow(0)
-    this.navigationManager.setScrollOffset(0)
+    if (clearQuery) {
+      this.navigationManager.setCurrentRow(0)
+      this.navigationManager.setScrollOffset(0)
+    }
     // Use incremental render for search mode toggle (no blink)
   }
 
@@ -272,8 +274,8 @@ export class StateManager {
     this.renderState.forceFullRender = isInitial
   }
 
-  resetForResize(): void {
-    const totalItems = this.renderState.renderableItems.length || this.displayState.maxVisibleItems
+  resetForResize(totalFilteredItems?: number): void {
+    const totalItems = totalFilteredItems || this.renderState.renderableItems.length || this.displayState.maxVisibleItems
     this.navigationManager.resetForResize(totalItems)
     this.renderState.forceFullRender = true
   }