simplify QuickAccessBar and use rem values in FitText

frontend/src/components/shared/FitText.tsx

@@ -63,7 +63,8 @@ const FitText: React.FC<FitTextProps> = ({
     wordBreak: lines > 1 ? ('keep-all' as any) : ('normal' as any),
     overflowWrap: 'normal',
     hyphens: 'manual',
-    fontSize: fontSize ? `${fontSize}px` : undefined,
+    // fontSize expects rem values (e.g., 1.2, 0.9) to scale with global font size
+    fontSize: fontSize ? `${fontSize}rem` : undefined,
   };
 
   return (

frontend/src/components/shared/QuickAccessBar.tsx

@@ -16,7 +16,7 @@ import TopToolIndicator from './quickAccessBar/TopToolIndicator';
 import { 
   isNavButtonActive, 
   getNavButtonStyle, 
-  getTargetNavButton 
+  getActiveNavButton 
 } from './quickAccessBar/QuickAccessBar';
 
 const QuickAccessBar = forwardRef<HTMLDivElement>(({
@@ -24,36 +24,21 @@ const QuickAccessBar = forwardRef<HTMLDivElement>(({
   const { t } = useTranslation();
   const { isRainbowMode } = useRainbowThemeContext();
   const { openFilesModal, isFilesModalOpen } = useFilesModalContext();
-  const { handleReaderToggle, selectedTool, selectedToolKey, leftPanelView } = useToolWorkflow();
+  const { handleReaderToggle, handleBackToTools, selectedTool, selectedToolKey, leftPanelView } = useToolWorkflow();
   const [configModalOpen, setConfigModalOpen] = useState(false);
   const [activeButton, setActiveButton] = useState<string>('tools');
   const scrollableRef = useRef<HTMLDivElement>(null);
   const isOverflow = useIsOverflowing(scrollableRef);
 
-  // Sync left nav highlight with selected tool when appropriate
   useEffect(() => {
-    if (leftPanelView === 'toolContent' && selectedTool) {
-      const target = getTargetNavButton(selectedTool, selectedToolKey);
-
-      if (target && activeButton !== target) {
-        setActiveButton(target);
-        return;
-      }
-      // If tool doesn't map to a nav button, clear the highlight
-      if (!target && activeButton !== 'tools') {
-        setActiveButton('tools');
-      }
-    }
-    // Revert highlight when no specific mapping applies
-    if (leftPanelView !== 'toolContent') {
-      setActiveButton('tools');
-    }
+    setActiveButton(getActiveNavButton(leftPanelView, selectedTool, selectedToolKey));
   }, [leftPanelView, selectedTool, selectedToolKey]);
 
   const handleFilesButtonClick = () => {
     openFilesModal();
   };
 
+  
   const buttonConfigs: ButtonConfig[] = [
     {
       id: 'read',
@@ -64,6 +49,9 @@ const QuickAccessBar = forwardRef<HTMLDivElement>(({
       type: 'navigation',
       onClick: () => {
         setActiveButton('read');
+        // Clear any selected tool and return to picker so the top tool indicator hides
+        handleBackToTools();
+        // Then enter reader mode
         handleReaderToggle();
       }
     },
@@ -77,7 +65,11 @@ const QuickAccessBar = forwardRef<HTMLDivElement>(({
       size: 'lg',
       isRound: false,
       type: 'navigation',
-      onClick: () => setActiveButton('sign')
+      onClick: () => {
+        setActiveButton('sign');
+        // Ensure any previously selected tool is cleared so indicator hides
+        handleBackToTools();
+      }
     },
     {
       id: 'automate',
@@ -89,7 +81,11 @@ const QuickAccessBar = forwardRef<HTMLDivElement>(({
       size: 'lg',
       isRound: false,
       type: 'navigation',
-      onClick: () => setActiveButton('automate')
+      onClick: () => {
+        setActiveButton('automate');
+        // Ensure any previously selected tool is cleared so indicator hides
+        handleBackToTools();
+      }
     },
     {
       id: 'files',

frontend/src/components/shared/fitText/FitText.README.md

@@ -34,7 +34,7 @@ export function CardTitle({ title }: { title: string }) {
 | Prop | Type | Default | Description |
 |------|------|---------|-------------|
 | `text` | `string` | — | The string to render and fit |
-| `fontSize` | `number` | computed | Maximum starting font size in px |
+| `fontSize` | `number` | computed | Maximum starting font size in rem (e.g., 1.2, 0.9) |
 | `minimumFontScale` | `number` | `0.8` | Smallest scale relative to the max (0..1) |
 | `lines` | `number` | `1` | Maximum number of lines to display and fit |
 | `className` | `string` | — | Optional class on the rendered element |
@@ -67,7 +67,7 @@ Notes:
 ### Explicit starting size
 
 ```tsx
-<FitText text="Starts at 18px, scales down if needed" fontSize={18} />
+<FitText text="Starts at 1.2rem, scales down if needed" fontSize={1.2} />
 ```
 
 ### Render as a div
@@ -107,5 +107,6 @@ export function CustomFit() {
 - For predictable measurements, ensure the container has a fixed width (or stable layout) when fitting occurs.
 - Avoid animating width while fitting; update after animation completes for best results.
 - When you need more control of typography, pass `fontSize` to define the starting ceiling.
+- **Important**: The `fontSize` prop expects `rem` values (e.g., 1.2, 0.9) to ensure text scales with global font size changes.
 
 

frontend/src/components/shared/quickAccessBar/QuickAccessBar.ts

@@ -1,15 +1,9 @@
 import { ButtonConfig } from '../../../types/sidebar';
+import { useFlatToolRegistry } from '../../../data/toolRegistry';
 
 // Border radius constants
 export const ROUND_BORDER_RADIUS = '0.5rem';
 
-/**
- * Get border radius for a button based on its configuration
- */
-export const getNavButtonBorderRadius = (config: ButtonConfig): string => {
-  return config.isRound ? ROUND_BORDER_RADIUS : ROUND_BORDER_RADIUS;
-};
-
 /**
  * Check if a navigation button is currently active
  */
@@ -42,7 +36,7 @@ export const getNavButtonStyle = (
       backgroundColor: `var(--icon-${config.id}-bg)`,
       color: `var(--icon-${config.id}-color)`,
       border: 'none',
-      borderRadius: getNavButtonBorderRadius(config),
+      borderRadius: ROUND_BORDER_RADIUS,
     };
   }
 
@@ -51,23 +45,38 @@ export const getNavButtonStyle = (
     backgroundColor: 'var(--icon-inactive-bg)',
     color: 'var(--icon-inactive-color)',
     border: 'none',
-    borderRadius: getNavButtonBorderRadius(config),
+    borderRadius: ROUND_BORDER_RADIUS,
   };
 };
 
 /**
- * Determine which nav button should be highlighted based on selected tool
+ * Determine which nav button should be highlighted based on the tool registry.
+ * Uses the tool's `view` property to map to the nav button id.
  */
-export const getTargetNavButton = (selectedTool: any, selectedToolKey: string | null): string | null => {
-  if (!selectedTool || !selectedToolKey) return null;
-  
-  // Map specific tool keys to nav button ids
-  if (selectedToolKey === 'sign') return 'sign';
-  if (selectedToolKey === 'read') return 'read';
-  if (selectedToolKey === 'automate') return 'automate';
-  
-  // Fallback: use subcategory for automation tools
-  if (selectedTool.subcategory === 'Automation') return 'automate';
-  
-  return null;
+export const getTargetNavButton = (
+  selectedToolKey: string | null,
+  registry: ReturnType<typeof useFlatToolRegistry>
+): string | null => {
+  if (!selectedToolKey) return null;
+
+  const toolEntry = registry[selectedToolKey];
+  if (!toolEntry) return null;
+
+  // Use the tool's view as the nav button id
+  return toolEntry.view || null;
+};
+
+/**
+ * Determine the active nav button based on current tool state and registry
+ */
+export const getActiveNavButton = (
+  leftPanelView: 'toolPicker' | 'toolContent',
+  selectedToolKey: string | null,
+  registry: ReturnType<typeof useFlatToolRegistry>
+): string => {
+  if (leftPanelView !== 'toolContent' || !selectedToolKey) {
+    return 'tools';
+  }
+
+  return getTargetNavButton(selectedToolKey, registry) || 'tools';
 };