feat: archive notes UI — filter, sidebar hiding, relationship indicators

- Add Archive filter in sidebar with count badge
- Hide archived notes from section groups and All Notes count
- Exclude archived notes from sectionGroup and topic filtering
- Show (archived) indicator on relationship chips and backlinks
- Show ARCHIVED badge on note list items
- Display 'Archive' header in NoteList when filter is active

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/Inspector.tsx

@@ -62,18 +62,18 @@ function wikilinkTarget(ref: string): string {
   return pipeIdx !== -1 ? inner.slice(0, pipeIdx) : inner
 }
 
-function resolveRefType(ref: string, entries: VaultEntry[]): string | undefined {
+function resolveRef(ref: string, entries: VaultEntry[]): VaultEntry | undefined {
   const target = wikilinkTarget(ref)
-  const match = entries.find((e) => {
+  return entries.find((e) => {
     const stem = e.path.replace(/^.*\/Laputa\//, '').replace(/\.md$/, '')
     if (stem === target) return true
     const fileStem = e.filename.replace(/\.md$/, '')
     if (fileStem === target.split('/').pop()) return true
     return false
   })
-  return match?.isA ?? undefined
 }
 
+
 function RelationshipGroup({ label, refs, entries, onNavigate }: { label: string; refs: string[]; entries: VaultEntry[]; onNavigate: (target: string) => void }) {
   if (refs.length === 0) return null
   return (
@@ -81,7 +81,9 @@ function RelationshipGroup({ label, refs, entries, onNavigate }: { label: string
       <span className="font-mono-overline mb-1 block text-muted-foreground">{label}</span>
       <div className="flex flex-col gap-1">
         {refs.map((ref, idx) => {
-          const refType = resolveRefType(ref, entries)
+          const resolved = resolveRef(ref, entries)
+          const refType = resolved?.isA ?? undefined
+          const isArchived = resolved?.archived ?? false
           const color = refType ? getTypeColor(refType) : 'var(--accent-blue)'
           const bgColor = refType ? getTypeLightColor(refType) : 'var(--accent-blue-light)'
           const TypeIcon = getTypeIcon(refType)
@@ -89,11 +91,20 @@ function RelationshipGroup({ label, refs, entries, onNavigate }: { label: string
             <button
               key={`${ref}-${idx}`}
               className="flex items-center justify-between gap-2 border-none text-left cursor-pointer hover:opacity-80"
-              style={{ background: bgColor, color, borderRadius: 6, padding: '6px 10px', fontSize: 12, fontWeight: 500 }}
+              style={{
+                background: isArchived ? 'var(--muted)' : bgColor,
+                color: isArchived ? 'var(--muted-foreground)' : color,
+                borderRadius: 6, padding: '6px 10px', fontSize: 12, fontWeight: 500,
+                opacity: isArchived ? 0.7 : 1,
+              }}
               onClick={() => onNavigate(wikilinkTarget(ref))}
+              title={isArchived ? 'Archived' : undefined}
             >
-              <span className="flex-1 truncate">{wikilinkDisplay(ref)}</span>
-              <TypeIcon width={14} height={14} className="shrink-0" style={{ color }} />
+              <span className="flex-1 truncate">
+                {wikilinkDisplay(ref)}
+                {isArchived && <span style={{ marginLeft: 4, fontSize: 10, opacity: 0.8 }}>(archived)</span>}
+              </span>
+              <TypeIcon width={14} height={14} className="shrink-0" style={{ color: isArchived ? 'var(--muted-foreground)' : color }} />
             </button>
           )
         })}
@@ -175,11 +186,15 @@ function BacklinksPanel({ backlinks, onNavigate }: { backlinks: VaultEntry[]; on
               <button
                 key={e.path}
                 className="flex items-center justify-between gap-2 border-none bg-transparent p-0 py-1 text-left text-[13px] cursor-pointer hover:opacity-80"
-                style={{ color }}
+                style={{ color: e.archived ? 'var(--muted-foreground)' : color, opacity: e.archived ? 0.7 : 1 }}
                 onClick={() => onNavigate(e.title)}
+                title={e.archived ? 'Archived' : undefined}
               >
-                <span className="flex-1 truncate">{e.title}</span>
-                {e.isA && <TypeIcon width={14} height={14} className="shrink-0" style={{ color }} />}
+                <span className="flex-1 truncate">
+                  {e.title}
+                  {e.archived && <span style={{ marginLeft: 4, fontSize: 10, opacity: 0.8 }}>(archived)</span>}
+                </span>
+                {e.isA && <TypeIcon width={14} height={14} className="shrink-0" style={{ color: e.archived ? 'var(--muted-foreground)' : color }} />}
               </button>
             )
           })}

src/components/NoteList.tsx

@@ -201,18 +201,20 @@ export function filterEntries(entries: VaultEntry[], selection: SidebarSelection
     case 'filter':
       switch (selection.filter) {
         case 'all':
-          return entries
+          return entries.filter((e) => !e.archived)
         case 'favorites':
           return []
+        case 'archived':
+          return entries.filter((e) => e.archived)
       }
       break
     case 'sectionGroup':
-      return entries.filter((e) => e.isA === selection.type)
+      return entries.filter((e) => e.isA === selection.type && !e.archived)
     case 'entity':
       return []
     case 'topic': {
       const topic = selection.entry
-      return entries.filter((e) => refsMatch(e.relatedTo, topic))
+      return entries.filter((e) => refsMatch(e.relatedTo, topic) && !e.archived)
     }
   }
 }
@@ -312,6 +314,14 @@ function NoteListInner({ entries, selection, selectedNote, allContent, modifiedF
             isSelected ? "font-semibold" : "font-medium"
           )}>
             {entry.title}
+            {entry.archived && (
+              <span
+                className="ml-1.5 inline-block align-middle text-muted-foreground"
+                style={{ fontSize: 9, fontWeight: 500, background: 'var(--muted)', borderRadius: 4, padding: '1px 4px', verticalAlign: 'middle' }}
+              >
+                ARCHIVED
+              </span>
+            )}
           </div>
         </div>
         <div className="mt-0.5 text-[12px] leading-[1.5] text-muted-foreground" style={{ display: '-webkit-box', WebkitLineClamp: 2, WebkitBoxOrient: 'vertical', overflow: 'hidden' }}>
@@ -394,7 +404,13 @@ function NoteListInner({ entries, selection, selectedNote, allContent, modifiedF
       {/* Header */}
       <div className="flex h-[45px] shrink-0 items-center justify-between border-b border-border px-4" data-tauri-drag-region style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}>
         <h3 className="m-0 min-w-0 flex-1 truncate text-[14px] font-semibold">
-          {isEntityView ? selection.entry.title : (typeDocument ? typeDocument.title : 'Notes')}
+          {isEntityView
+            ? selection.entry.title
+            : typeDocument
+              ? typeDocument.title
+              : selection.kind === 'filter' && (selection as { filter: string }).filter === 'archived'
+                ? 'Archive'
+                : 'Notes'}
         </h3>
         <div className="flex items-center gap-3" style={{ WebkitAppRegion: 'no-drag' } as React.CSSProperties}>
           <button

src/components/Sidebar.tsx

@@ -16,6 +16,7 @@ import {
   TagSimple,
   Trash,
   StackSimple,
+  Archive,
   type IconProps,
 } from '@phosphor-icons/react'
 
@@ -88,8 +89,10 @@ export const Sidebar = memo(function Sidebar({ entries, selection, onSelect, onS
     [customSectionGroups],
   )
 
+  const archivedCount = useMemo(() => entries.filter((e) => e.archived).length, [entries])
+
   const renderSection = ({ label, type, Icon }: SectionGroup) => {
-    const items = entries.filter((e) => e.isA === type)
+    const items = entries.filter((e) => e.isA === type && !e.archived)
     const isCollapsed = collapsed[type] ?? false
     const isTopic = type === 'Topic'
     const isTypeSection = type === 'Type'
@@ -187,7 +190,7 @@ export const Sidebar = memo(function Sidebar({ entries, selection, onSelect, onS
         {/* Top nav — All Notes + Favorites */}
         <div className="border-b border-border" style={{ padding: '4px 6px' }}>
           {TOP_NAV.map(({ label, filter, Icon }) => {
-            const count = filter === 'all' ? entries.length : 0
+            const count = filter === 'all' ? entries.filter((e) => !e.archived).length : 0
             return (
               <div
                 key={filter}
@@ -213,6 +216,28 @@ export const Sidebar = memo(function Sidebar({ entries, selection, onSelect, onS
               </div>
             )
           })}
+          {/* Archive filter */}
+          <div
+            className={cn(
+              "flex cursor-pointer select-none items-center gap-2 rounded transition-colors",
+              isActive({ kind: 'filter', filter: 'archived' })
+                ? "bg-primary/10 text-primary"
+                : "text-foreground hover:bg-accent"
+            )}
+            style={{ padding: '6px 16px', borderRadius: 4 }}
+            onClick={() => onSelect({ kind: 'filter', filter: 'archived' })}
+          >
+            <Archive size={16} />
+            <span className="flex-1 text-[13px] font-medium">Archive</span>
+            {archivedCount > 0 && (
+              <span
+                className="flex items-center justify-center text-muted-foreground"
+                style={{ height: 20, borderRadius: 9999, padding: '0 6px', fontSize: 10, background: 'var(--muted)' }}
+              >
+                {archivedCount}
+              </span>
+            )}
+          </div>
           {/* Disabled placeholders */}
           <div
             className="flex select-none items-center gap-2 rounded text-foreground"