Feat v0.4.6 sidebar restructure

Restructure the notes sidebar with a two-tab header (Notes / Outline)
and relocate the document outline from the editor-side panel into the
sidebar's Outline tab with active heading tracking.

- Add SidebarTabs component with Notes/Outline tabs; Outline disabled
  when no note is selected
- Add SidebarOutline component with nested heading hierarchy
  (H1→H2→H3), depth indentation, and click-to-scroll
- Add RAF-throttled scroll listener for active heading highlighting
  based on scroll position (preview getBoundingClientRect / CM6 viewport)
- Lift headings, scrollToHeading, and activeHeadingIdx state to NotesApp
  via EditorPane callback props
- Remove old DocumentOutline component and .doc-outline CSS
- Auto-reset to Notes tab when active note is deleted
- Bump notes package to v0.7.0

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

CHANGELOG.md

@@ -2,6 +2,36 @@
 
 All notable changes to Switchboard Core are documented here.
 
+## v0.4.6 — Sidebar Restructure
+
+### Added
+
+- **Sidebar tabs**: Two-tab header ("Notes" / "Outline") replaces the static
+  sidebar header. Notes tab contains folder tree, tag filter, search, and note
+  list. Outline tab shows the document heading tree for the active note.
+  Outline tab disabled (grayed) when no note is selected.
+- **Sidebar outline**: Document outline relocated from editor-side panel into
+  the sidebar's Outline tab. Nested heading hierarchy (H1→H2→H3) with depth
+  indentation via `padding-left`. Click heading scrolls to it in both preview
+  and CM6 editor modes.
+- **Active heading tracking**: Scroll listener (RAF-throttled) highlights the
+  current heading in the sidebar outline based on scroll position. Uses
+  `getBoundingClientRect()` in preview/split mode and CM6 viewport line in
+  edit mode.
+
+### Changed
+
+- Notes package version bumped from 0.6.0 to 0.7.0.
+- `EditorPane` exposes headings, scroll function, and active heading index to
+  parent via callback props (`onHeadingsChange`, `scrollToHeadingRef`,
+  `onActiveHeadingChange`).
+- Sidebar auto-resets to Notes tab when active note is deleted.
+
+### Removed
+
+- Old `DocumentOutline` component and `.doc-outline` CSS styles (replaced by
+  sidebar outline).
+
 ## v0.4.5 — Editor Modes + Document Outline
 
 ### Added

ROADMAP.md

@@ -301,12 +301,12 @@ Zero platform special-casing. Proves the full extension stack E2E.
 | View mode setting | ✅ | `editor_mode` in manifest settings + localStorage persistence. Toolbar cycles rendered → edit → split. |
 | Document outline | ✅ | `parseHeadings()` extracts headings (skips code blocks). Collapsible `DocumentOutline` panel with click-to-scroll (CM6 line dispatch or preview `scrollIntoView`). Debounced 300ms updates. |
 
-### v0.4.6 — Sidebar Restructure (planned)
+### v0.4.6 — Sidebar Restructure (complete)
 
 | Step | Status | Description |
 |------|--------|-------------|
-| Sidebar tabs | | Two-tab header at top of sidebar: "Notes" (folders → tags → search → list) and "Outline" (heading tree for active note). Outline tab enabled only when a note is selected. |
-| Heading tree | | Nested heading hierarchy (H1 → H2 → H3) with depth indentation. Click → scroll to heading in editor/preview. Current heading highlighted based on scroll position. |
+| Sidebar tabs | ✅ | Two-tab header at top of sidebar: "Notes" (folders → tags → search → list) and "Outline" (heading tree for active note). Outline tab enabled only when a note is selected. |
+| Heading tree | ✅ | Nested heading hierarchy (H1 → H2 → H3) with depth indentation. Click → scroll to heading in editor/preview. Current heading highlighted based on scroll position. |
 
 ### v0.4.7 — Note Graph (planned)
 

VERSION

@@ -1 +1 @@
-0.4.5
+0.4.6

packages/notes/css/main.css

@@ -632,57 +632,79 @@
   font-size: 11px;
 }
 
-/* ── Document Outline ─────────────────────── */
-.doc-outline {
-  width: 200px;
-  min-width: 160px;
-  border-left: 1px solid var(--border);
-  background: var(--bg-raised);
-  overflow-y: auto;
+/* ── Sidebar Tabs ────────────────────────── */
+.sidebar-tabs {
+  display: flex;
+  border-bottom: 1px solid var(--border);
   flex-shrink: 0;
 }
-.doc-outline__header {
-  font-size: 11px;
-  font-weight: 600;
+.sidebar-tabs__tab {
+  flex: 1;
+  padding: 10px 14px;
+  font-size: 13px;
+  font-weight: 500;
   color: var(--text-2);
-  text-transform: uppercase;
-  letter-spacing: 0.5px;
-  padding: 8px 10px;
-  display: flex;
-  align-items: center;
-  gap: 6px;
+  background: none;
+  border: none;
+  border-bottom: 2px solid transparent;
   cursor: pointer;
-  user-select: none;
-  border-bottom: 1px solid var(--border);
+  transition: var(--transition);
+  text-align: center;
+  font-family: var(--font);
 }
-.doc-outline__toggle {
-  font-size: 9px;
-  color: var(--text-2);
-}
-.doc-outline__count {
+.sidebar-tabs__tab:hover {
+  color: var(--text);
   background: var(--bg-hover);
-  color: var(--text-2);
-  font-size: 10px;
-  padding: 0 6px;
-  border-radius: 8px;
-  line-height: 16px;
 }
-.doc-outline__item {
-  padding: 4px 10px;
-  font-size: 12px;
+.sidebar-tabs__tab--active {
+  color: var(--text);
+  border-bottom-color: var(--accent);
+}
+.sidebar-tabs__tab--disabled {
+  color: var(--text-3);
+  cursor: default;
+  opacity: 0.5;
+}
+.sidebar-tabs__tab--disabled:hover {
+  background: none;
+  color: var(--text-3);
+}
+
+/* ── Sidebar Outline ─────────────────────── */
+.sidebar-outline {
+  flex: 1;
+  overflow-y: auto;
+  padding: 8px 0;
+}
+.sidebar-outline__empty {
+  padding: 40px 16px;
+  text-align: center;
+  color: var(--text-3);
+  font-size: 13px;
+}
+.sidebar-outline__item {
+  padding: 5px 12px;
+  font-size: 13px;
   color: var(--text-2);
   cursor: pointer;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
   transition: var(--transition);
+  border-radius: var(--radius);
+  margin: 1px 6px;
 }
-.doc-outline__item:hover {
+.sidebar-outline__item:hover {
   background: var(--bg-hover);
   color: var(--text);
 }
-.doc-outline__item--h1 { font-weight: 600; color: var(--text); }
-.doc-outline__item--h2 { font-weight: 500; }
+.sidebar-outline__item--active {
+  background: var(--bg-active);
+  color: var(--text);
+  font-weight: 500;
+}
+.sidebar-outline__item--h1 { font-weight: 600; color: var(--text); }
+.sidebar-outline__item--h2 { font-weight: 500; }
 
 /* ── Responsive ──────────────────────────── */
 @media (max-width: 700px) {
@@ -691,5 +713,4 @@
   .folder-tree { max-height: 30vh; }
   .notes-editor__body--split { grid-template-columns: 1fr; }
   .notes-editor__body--split .notes-preview { display: none; }
-  .doc-outline { display: none; }
 }

packages/notes/js/main.js

@@ -1,5 +1,5 @@
 /**
- * Notes — Surface Entry Point (v0.6.0)
+ * Notes — Surface Entry Point (v0.7.0)
  *
  * Markdown notes surface using the SDK:
  *   sw.api.ext('notes')  — scoped API client
@@ -628,44 +628,38 @@
     return result;
   }
 
-  function DocumentOutline({ headings, viewMode, cmEditorRef, previewRef }) {
-    var [collapsed, setCollapsed] = useState(false);
+  // ═══════════════════════════════════════════
+  //  SidebarTabs — Notes / Outline tab header
+  // ═══════════════════════════════════════════
 
-    if (!headings || headings.length === 0) return null;
+  function SidebarTabs({ activeTab, onTabChange, noteSelected }) {
+    return html`
+      <div class="sidebar-tabs">
+        <button class="sidebar-tabs__tab ${activeTab === 'notes' ? 'sidebar-tabs__tab--active' : ''}"
+                onClick=${function() { onTabChange('notes'); }}>Notes</button>
+        <button class="sidebar-tabs__tab ${activeTab === 'outline' ? 'sidebar-tabs__tab--active' : ''} ${!noteSelected ? 'sidebar-tabs__tab--disabled' : ''}"
+                onClick=${function() { if (noteSelected) onTabChange('outline'); }}>Outline</button>
+      </div>
+    `;
+  }
 
-    function scrollToHeading(heading) {
-      // scroll preview in rendered / split
-      if (viewMode !== 'edit' && previewRef.current) {
-        var targets = previewRef.current.querySelectorAll('h1, h2, h3, h4, h5, h6');
-        for (var i = 0; i < targets.length; i++) {
-          if (targets[i].textContent.trim() === heading.text) {
-            targets[i].scrollIntoView({ behavior: 'smooth', block: 'start' });
-            return;
-          }
-        }
-      }
-      // scroll CM6 in edit / split
-      if (viewMode !== 'rendered' && cmEditorRef.current) {
-        var view = cmEditorRef.current.getView();
-        if (!view) return;
-        var lineNum = Math.min(heading.line + 1, view.state.doc.lines);
-        var lineObj = view.state.doc.line(lineNum);
-        view.dispatch({ effects: CM.EditorView.scrollIntoView(lineObj.from, { y: 'start' }) });
-      }
+
+  // ═══════════════════════════════════════════
+  //  SidebarOutline — heading tree in sidebar
+  // ═══════════════════════════════════════════
+
+  function SidebarOutline({ headings, activeHeadingIdx, onScrollToHeading }) {
+    if (!headings || headings.length === 0) {
+      return html`<div class="sidebar-outline__empty">No headings found</div>`;
     }
 
     return html`
-      <div class="doc-outline">
-        <div class="doc-outline__header" onClick=${function() { setCollapsed(!collapsed); }}>
-          <span class="doc-outline__toggle">${collapsed ? '\u25B6' : '\u25BC'}</span>
-          <span>Outline</span>
-          <span class="doc-outline__count">${headings.length}</span>
-        </div>
-        ${!collapsed && headings.map(function(h, i) {
+      <div class="sidebar-outline">
+        ${headings.map(function(h, i) {
           return html`
-            <div key=${i} class="doc-outline__item doc-outline__item--h${h.level}"
-                 style="padding-left: ${8 + (h.level - 1) * 12}px"
-                 onClick=${function() { scrollToHeading(h); }}>
+            <div key=${i} class="sidebar-outline__item sidebar-outline__item--h${h.level} ${i === activeHeadingIdx ? 'sidebar-outline__item--active' : ''}"
+                 style="padding-left: ${10 + (h.level - 1) * 14}px"
+                 onClick=${function() { onScrollToHeading(h); }}>
               ${h.text}
             </div>
           `;
@@ -676,7 +670,7 @@
 
   var _modeStore = sw.storage.local('notes');
 
-  function EditorPane({ note, folders, allTags, onSave, onDelete, onRefresh, onTagsChanged, onNavigate, onNavigateToTitle }) {
+  function EditorPane({ note, folders, allTags, onSave, onDelete, onRefresh, onTagsChanged, onNavigate, onNavigateToTitle, onHeadingsChange, scrollToHeadingRef, onActiveHeadingChange }) {
     var [title, setTitle]     = useState(note ? note.title : '');
     var [body, setBody]       = useState(note ? note.body : '');
     var [noteTags, setNoteTags] = useState([]);
@@ -914,10 +908,82 @@
     var [headings, setHeadings] = useState([]);
     useEffect(function() {
       debounce('outline', function() {
-        setHeadings(parseHeadings(body));
+        var h = parseHeadings(body);
+        setHeadings(h);
+        if (onHeadingsChange) onHeadingsChange(h);
       }, 300);
     }, [body]);
 
+    // ── Expose scrollToHeading to parent via ref ──
+    useEffect(function() {
+      if (!scrollToHeadingRef) return;
+      scrollToHeadingRef.current = function(heading) {
+        // scroll preview in rendered / split
+        if (viewMode !== 'edit' && previewRef.current) {
+          var targets = previewRef.current.querySelectorAll('h1, h2, h3, h4, h5, h6');
+          for (var i = 0; i < targets.length; i++) {
+            if (targets[i].textContent.trim() === heading.text) {
+              targets[i].scrollIntoView({ behavior: 'smooth', block: 'start' });
+              return;
+            }
+          }
+        }
+        // scroll CM6 in edit / split
+        if (viewMode !== 'rendered' && cmEditorRef.current) {
+          var view = cmEditorRef.current.getView();
+          if (!view) return;
+          var lineNum = Math.min(heading.line + 1, view.state.doc.lines);
+          var lineObj = view.state.doc.line(lineNum);
+          view.dispatch({ effects: CM.EditorView.scrollIntoView(lineObj.from, { y: 'start' }) });
+        }
+      };
+    }, [viewMode]);
+
+    // ── Active heading tracking on scroll ──
+    useEffect(function() {
+      if (!onActiveHeadingChange || !note) return;
+      var scrollEl = null;
+      var usePreview = viewMode !== 'edit';
+      if (usePreview && previewRef.current) {
+        scrollEl = previewRef.current;
+      } else if (viewMode !== 'rendered' && cmEditorRef.current) {
+        var view = cmEditorRef.current.getView();
+        if (view) scrollEl = view.scrollDOM;
+      }
+      if (!scrollEl) return;
+
+      var ticking = false;
+      function onScroll() {
+        if (ticking) return;
+        ticking = true;
+        requestAnimationFrame(function() {
+          ticking = false;
+          if (usePreview && previewRef.current) {
+            var els = previewRef.current.querySelectorAll('h1, h2, h3, h4, h5, h6');
+            var active = -1;
+            for (var i = 0; i < els.length; i++) {
+              if (els[i].getBoundingClientRect().top <= previewRef.current.getBoundingClientRect().top + 30) {
+                active = i;
+              }
+            }
+            onActiveHeadingChange(active);
+          } else if (cmEditorRef.current) {
+            var v = cmEditorRef.current.getView();
+            if (!v) return;
+            var topLine = v.state.doc.lineAt(v.viewport.from).number - 1;
+            var active = -1;
+            for (var i = 0; i < headings.length; i++) {
+              if (headings[i].line <= topLine) active = i;
+            }
+            onActiveHeadingChange(active);
+          }
+        });
+      }
+      scrollEl.addEventListener('scroll', onScroll);
+      onScroll(); // initial check
+      return function() { scrollEl.removeEventListener('scroll', onScroll); };
+    }, [viewMode, note ? note.id : null, headings]);
+
     // build indented folder list for the select dropdown
     var folderOptions = useMemo(function() {
       var list = folders || [];
@@ -1025,8 +1091,6 @@
           <div class="notes-editor__body ${viewMode === 'split' ? 'notes-editor__body--split' : ''}">
             ${renderEditorBody()}
           </div>
-          <${DocumentOutline} headings=${headings} viewMode=${viewMode}
-            cmEditorRef=${cmEditorRef} previewRef=${previewRef} />
         </div>
         <${BacklinksPanel} noteId=${note.id} onNavigate=${onNavigate} />
       </div>
@@ -1050,6 +1114,10 @@
     var [showUnfiled, setShowUnfiled]   = useState(false);
     var [allTags, setAllTags]           = useState([]);
     var [activeTag, setActiveTag]       = useState(null);
+    var [sidebarTab, setSidebarTab]     = useState('notes');
+    var [sidebarHeadings, setSidebarHeadings] = useState([]);
+    var [activeHeadingIdx, setActiveHeadingIdx] = useState(-1);
+    var scrollToHeadingRef = useRef(null);
 
     // ── Load note list ────────────────────────
     var loadNotes = useCallback(async function() {
@@ -1161,6 +1229,9 @@
     function handleDelete() {
       setActiveId(null);
       setActiveNote(null);
+      setSidebarTab('notes');
+      setSidebarHeadings([]);
+      setActiveHeadingIdx(-1);
       loadNotes();
       loadStats();
       loadTags();
@@ -1317,38 +1388,42 @@
       <//>
       <div class="notes-app">
         <div class="notes-sidebar">
-          <div class="notes-sidebar__header">
-            <span class="notes-sidebar__title">Notes</span>
-            ${stats && html`<span class="notes-sidebar__count">${stats.total}</span>`}
-          </div>
-          <${FolderTree} folders=${folders}
-            activeFolderId=${activeFolderId} showUnfiled=${showUnfiled}
-            onSelectFolder=${handleSelectFolder} onSelectAll=${handleSelectAll}
-            onSelectUnfiled=${handleSelectUnfiled}
-            onCreateFolder=${handleCreateFolder}
-            onRenameFolder=${handleRenameFolder}
-            onDeleteFolder=${handleDeleteFolder}
-            onDropNote=${handleDropNote} />
-          <${TagFilter} tags=${allTags} activeTag=${activeTag} onSelect=${handleTagFilter} />
-          <div class="notes-search">
-            <input type="text" placeholder="Search notes…"
-                   value=${searchTerm} onInput=${handleSearch} />
-          </div>
-          <div class="notes-list">
-            ${loading && html`<div class="notes-list__loading"><${Spinner} size="md" /></div>`}
-            ${!loading && notes.length === 0 && html`
-              <div class="notes-list__empty">
-                ${searchTerm ? 'No matching notes' : (activeTag ? 'No notes with tag "' + activeTag + '"' : 'No notes yet. Click + New Note to start.')}
-              </div>
-            `}
-            ${!loading && notes.map(function(n) {
-              return html`
-                <${NoteCard} key=${n.id} note=${n}
-                  active=${n.id === activeId}
-                  onClick=${() => handleSelect(n.id)} />
-              `;
-            })}
-          </div>
+          <${SidebarTabs} activeTab=${sidebarTab} onTabChange=${setSidebarTab} noteSelected=${!!activeNote} />
+          ${sidebarTab === 'notes' && html`
+            <${FolderTree} folders=${folders}
+              activeFolderId=${activeFolderId} showUnfiled=${showUnfiled}
+              onSelectFolder=${handleSelectFolder} onSelectAll=${handleSelectAll}
+              onSelectUnfiled=${handleSelectUnfiled}
+              onCreateFolder=${handleCreateFolder}
+              onRenameFolder=${handleRenameFolder}
+              onDeleteFolder=${handleDeleteFolder}
+              onDropNote=${handleDropNote} />
+            <${TagFilter} tags=${allTags} activeTag=${activeTag} onSelect=${handleTagFilter} />
+            <div class="notes-search">
+              <input type="text" placeholder="Search notes…"
+                     value=${searchTerm} onInput=${handleSearch} />
+            </div>
+            <div class="notes-list">
+              ${loading && html`<div class="notes-list__loading"><${Spinner} size="md" /></div>`}
+              ${!loading && notes.length === 0 && html`
+                <div class="notes-list__empty">
+                  ${searchTerm ? 'No matching notes' : (activeTag ? 'No notes with tag "' + activeTag + '"' : 'No notes yet. Click + New Note to start.')}
+                </div>
+              `}
+              ${!loading && notes.map(function(n) {
+                return html`
+                  <${NoteCard} key=${n.id} note=${n}
+                    active=${n.id === activeId}
+                    onClick=${() => handleSelect(n.id)} />
+                `;
+              })}
+            </div>
+          `}
+          ${sidebarTab === 'outline' && html`
+            <${SidebarOutline} headings=${sidebarHeadings}
+              activeHeadingIdx=${activeHeadingIdx}
+              onScrollToHeading=${function(h) { if (scrollToHeadingRef.current) scrollToHeadingRef.current(h); }} />
+          `}
         </div>
         <${EditorPane} note=${activeNote} folders=${folders} allTags=${allTags}
           onSave=${handleRefresh}
@@ -1356,7 +1431,10 @@
           onRefresh=${handleRefresh}
           onTagsChanged=${handleTagsChanged}
           onNavigate=${handleSelect}
-          onNavigateToTitle=${handleNavigateToTitle} />
+          onNavigateToTitle=${handleNavigateToTitle}
+          onHeadingsChange=${setSidebarHeadings}
+          scrollToHeadingRef=${scrollToHeadingRef}
+          onActiveHeadingChange=${setActiveHeadingIdx} />
       </div>
     `;
   }

packages/notes/manifest.json

@@ -6,9 +6,9 @@
   "route": "/s/notes",
   "auth": "authenticated",
   "layout": "single",
-  "version": "0.6.0",
+  "version": "0.7.0",
   "icon": "📝",
-  "description": "Markdown notes surface with rich editor, folders, tags, backlinks, import/export, and document outline.",
+  "description": "Markdown notes surface with rich editor, folders, tags, backlinks, import/export, sidebar tabs, and document outline.",
   "author": "switchboard",
 
   "permissions": ["db.write"],