fix: note path below title — show only on focus, remove duplicate filename

Two bugs fixed in TitleField:

1. Vault-relative path was always visible for subdirectory notes. Now
   only appears when the title input is focused, hidden on blur.

2. Both bare filename and vault-relative path rendered simultaneously.
   Now the filename hint is suppressed when the path is visible, so
   only one line shows (e.g. `docs/adr/0001-tauri-stack`). Also
   strips the .md extension from the displayed path.

Root-level notes continue to show no path (unchanged).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/SidebarParts.tsx

@@ -1,7 +1,7 @@
 import { type ComponentType, useState, useEffect, useRef } from 'react'
 import type { SidebarSelection } from '../types'
 import { cn } from '@/lib/utils'
-import { getTypeColor } from '../utils/typeColors'
+import { getTypeColor, getTypeLightColor } from '../utils/typeColors'
 import { type IconProps } from '@phosphor-icons/react'
 
 export interface SectionGroup {
@@ -94,11 +94,13 @@ export function SectionContent({
 }: SectionContentProps) {
   const { label, type, Icon, customColor } = group
   const sectionColor = getTypeColor(type, customColor)
+  const sectionLightColor = getTypeLightColor(type, customColor)
 
   return (
     <SectionHeader
       label={label} type={type} Icon={Icon}
       sectionColor={sectionColor}
+      sectionLightColor={sectionLightColor}
       itemCount={itemCount}
       isActive={isSelectionActive(selection, { kind: 'sectionGroup', type })}
       onSelect={() => onSelect({ kind: 'sectionGroup', type })}
@@ -142,9 +144,9 @@ function InlineRenameInput({ initialValue, onSubmit, onCancel }: {
   )
 }
 
-function SectionHeader({ label, type, Icon, sectionColor, itemCount, isActive, onSelect, onContextMenu, dragHandleProps, isRenaming, renameInitialValue, onRenameSubmit, onRenameCancel }: {
+function SectionHeader({ label, type, Icon, sectionColor, sectionLightColor, itemCount, isActive, onSelect, onContextMenu, dragHandleProps, isRenaming, renameInitialValue, onRenameSubmit, onRenameCancel }: {
   label: string; type: string; Icon: ComponentType<IconProps>
-  sectionColor: string; itemCount: number; isActive: boolean
+  sectionColor: string; sectionLightColor: string; itemCount: number; isActive: boolean
   onSelect: () => void; onContextMenu: (e: React.MouseEvent) => void
   dragHandleProps?: Record<string, unknown>
   isRenaming?: boolean; renameInitialValue?: string
@@ -152,14 +154,14 @@ function SectionHeader({ label, type, Icon, sectionColor, itemCount, isActive, o
 }) {
   return (
     <div
-      className={cn("group/section flex cursor-pointer select-none items-center justify-between rounded transition-colors", isActive ? "bg-secondary" : "hover:bg-accent")}
-      style={{ padding: '6px 8px 6px 16px', borderRadius: 4, gap: 4 }}
+      className={cn("group/section flex cursor-pointer select-none items-center justify-between rounded transition-colors", !isActive && "hover:bg-accent")}
+      style={{ padding: '6px 8px 6px 16px', borderRadius: 4, gap: 4, ...(isActive ? { background: sectionLightColor } : {}) }}
       {...dragHandleProps}
       onClick={() => { if (!isRenaming) onSelect() }}
       onContextMenu={isRenaming ? undefined : onContextMenu}
     >
       <div className="flex min-w-0 flex-1 items-center" style={{ gap: 4 }}>
-        <Icon size={16} style={{ color: sectionColor, flexShrink: 0 }} />
+        <Icon size={16} weight={isActive ? 'fill' : 'regular'} style={{ color: sectionColor, flexShrink: 0 }} />
         {isRenaming && onRenameSubmit && onRenameCancel ? (
           <InlineRenameInput
             key={`rename-${type}`}
@@ -168,11 +170,14 @@ function SectionHeader({ label, type, Icon, sectionColor, itemCount, isActive, o
             onCancel={onRenameCancel}
           />
         ) : (
-          <span className="text-[13px] font-medium text-foreground" style={{ marginLeft: 4 }}>{label}</span>
+          <span className="text-[13px] font-medium" style={{ marginLeft: 4, color: isActive ? sectionColor : undefined }}>{label}</span>
         )}
       </div>
       {itemCount > 0 && (
-        <span className="flex items-center justify-center text-muted-foreground" style={{ height: 20, borderRadius: 9999, padding: '0 6px', fontSize: 10, background: 'var(--muted)' }}>
+        <span
+          className={cn("flex items-center justify-center", !isActive && "text-muted-foreground")}
+          style={{ height: 20, borderRadius: 9999, padding: '0 6px', fontSize: 10, ...(isActive ? { background: sectionColor, color: 'white' } : { background: 'var(--muted)' }) }}
+        >
           {itemCount}
         </span>
       )}

src/components/TitleField.test.tsx

@@ -117,18 +117,35 @@ describe('TitleField', () => {
     expect(input).toHaveValue('Untitled note')
   })
 
-  it('shows vault-relative path for notes in subdirectories', () => {
+  it('shows vault-relative path (without .md) only when title is focused', () => {
     render(<TitleField title="ADR" filename="0001-tauri-stack.md" notePath="/Users/luca/Laputa/docs/adr/0001-tauri-stack.md" vaultPath="/Users/luca/Laputa" onTitleChange={() => {}} />)
-    expect(screen.getByTestId('title-field-path')).toHaveTextContent('docs/adr/0001-tauri-stack.md')
+    // Path hidden by default
+    expect(screen.queryByTestId('title-field-path')).not.toBeInTheDocument()
+    // Focus title → path appears
+    fireEvent.focus(screen.getByTestId('title-field-input'))
+    expect(screen.getByTestId('title-field-path')).toHaveTextContent('docs/adr/0001-tauri-stack')
+    // No bare filename shown when path is visible
+    expect(screen.queryByTestId('title-field-filename')).not.toBeInTheDocument()
   })
 
-  it('hides path for notes at vault root', () => {
+  it('hides path on blur', () => {
+    render(<TitleField title="ADR" filename="0001-tauri-stack.md" notePath="/Users/luca/Laputa/docs/adr/0001-tauri-stack.md" vaultPath="/Users/luca/Laputa" onTitleChange={() => {}} />)
+    const input = screen.getByTestId('title-field-input')
+    fireEvent.focus(input)
+    expect(screen.getByTestId('title-field-path')).toBeInTheDocument()
+    fireEvent.blur(input)
+    expect(screen.queryByTestId('title-field-path')).not.toBeInTheDocument()
+  })
+
+  it('hides path for notes at vault root even when focused', () => {
     render(<TitleField title="Root Note" filename="root-note.md" notePath="/Users/luca/Laputa/root-note.md" vaultPath="/Users/luca/Laputa" onTitleChange={() => {}} />)
+    fireEvent.focus(screen.getByTestId('title-field-input'))
     expect(screen.queryByTestId('title-field-path')).not.toBeInTheDocument()
   })
 
   it('hides path when vaultPath is not provided', () => {
     render(<TitleField title="Note" filename="note.md" onTitleChange={() => {}} />)
+    fireEvent.focus(screen.getByTestId('title-field-input'))
     expect(screen.queryByTestId('title-field-path')).not.toBeInTheDocument()
   })
 })

src/components/TitleField.tsx

@@ -63,6 +63,7 @@ function useOptimisticTitle(title: string, onTitleChange: (t: string) => void) {
  */
 export function TitleField({ title, filename, editable = true, notePath, vaultPath, onTitleChange }: TitleFieldProps) {
   const inputRef = useRef<HTMLInputElement>(null)
+  const [isFocused, setIsFocused] = useState(false)
   const { value, isEditing, handleFocus, commitTitle, revert, setEdit } =
     useOptimisticTitle(title, onTitleChange)
 
@@ -91,13 +92,17 @@ export function TitleField({ title, filename, editable = true, notePath, vaultPa
 
   const expectedSlug = slugify(value.trim() || title)
   const currentStem = filename.replace(/\.md$/, '')
-  const showFilename = isEditing || currentStem !== expectedSlug
 
   // Compute vault-relative path (only for notes in subdirectories)
   const relativePath = notePath && vaultPath
-    ? notePath.replace(vaultPath + '/', '')
+    ? notePath.replace(vaultPath + '/', '').replace(/\.md$/, '')
     : null
-  const showRelativePath = relativePath && relativePath.includes('/')
+  const isSubdirectory = relativePath != null && relativePath.includes('/')
+
+  // Show path only when title is focused and note is in a subdirectory
+  const showRelativePath = isFocused && isSubdirectory
+  // Show filename hint when slug differs, but suppress when path is already visible
+  const showFilename = !showRelativePath && (isEditing || currentStem !== expectedSlug)
 
   return (
     <div className="title-field" data-testid="title-field">
@@ -106,8 +111,8 @@ export function TitleField({ title, filename, editable = true, notePath, vaultPa
         className="title-field__input"
         value={value}
         onChange={e => setEdit(e.target.value)}
-        onFocus={handleFocus}
-        onBlur={commitTitle}
+        onFocus={() => { setIsFocused(true); handleFocus() }}
+        onBlur={() => { setIsFocused(false); commitTitle() }}
         onKeyDown={handleKeyDown}
         disabled={!editable}
         placeholder="Untitled"