diff --git a/src/renderer/App.tsx b/src/renderer/App.tsx
index 1bdf861..55f1f29 100644
--- a/src/renderer/App.tsx
+++ b/src/renderer/App.tsx
@@ -1,5 +1,6 @@
 import { useEffect, useState } from 'react'
 import { FileTree } from './components/FileTree/FileTree'
+import { currentEditorView } from './components/Editor/MarkdownEditor'
 import { MarkdownEditor } from './components/Editor/MarkdownEditor'
 import { DocumentOutline } from './components/Editor/DocumentOutline'
 import { ChatPanel } from './components/AIChat/ChatPanel'
@@ -16,8 +17,24 @@ export default function App(): JSX.Element {
     setFileTree, activeFilePath, isDirty, markSaved, activeFileContent, theme, toggleTheme,
     loadSession, revisionPanelOpen, toggleRevisionPanel, fontSize, setFontSize,
     openProjectSearch, clearActiveFile, initPrefs, focusMode, toggleFocusMode,
-    showHome, goHome
+    showHome, goHome, setActiveFile
   } = useEditorStore()
+
+  const handleOpenStoryBible = async (): Promise<void> => {
+    try {
+      const { path, content } = await window.api.openStoryBible()
+      setActiveFile(path, content)
+      if (path === activeFilePath) {
+        const view = currentEditorView
+        if (view) {
+          view.dispatch({ changes: { from: 0, to: view.state.doc.length, insert: content } })
+          markSaved()
+        }
+      }
+    } catch (err) {
+      console.error('[App] openStoryBible failed:', err)
+    }
+  }
   const [sidebarOpen, setSidebarOpen] = useState(
     () => localStorage.getItem('sidebarOpen') !== 'false'
   )
@@ -175,14 +192,22 @@ export default function App(): JSX.Element {
         </div>
       </div>
       <aside className="sidebar">
-        <button
-          className={`sidebar-home-btn${showHome ? ' active' : ''}`}
-          onClick={goHome}
-          title="Home"
-        >
-          <span className="sidebar-home-icon">⌂</span>
-          <span className="sidebar-home-label">Home</span>
-        </button>
+        <div className="sidebar-nav">
+          <button
+            className={`sidebar-nav-btn${showHome ? ' active' : ''}`}
+            onClick={goHome}
+            title="Home"
+          >
+            <span className="sidebar-nav-icon">⌂</span>
+          </button>
+          <button
+            className="sidebar-nav-btn"
+            onClick={handleOpenStoryBible}
+            title="Open Story Bible"
+          >
+            <span className="sidebar-nav-icon">📖</span>
+          </button>
+        </div>
         <FileTree />
       </aside>
       <main className="editor-area" style={{ position: 'relative' }}>
diff --git a/src/renderer/components/FileTree/FileTree.css b/src/renderer/components/FileTree/FileTree.css
index 03504bf..fe8352e 100644
--- a/src/renderer/components/FileTree/FileTree.css
+++ b/src/renderer/components/FileTree/FileTree.css
@@ -5,34 +5,6 @@
   overflow: hidden;
 }
 
-.file-tree-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 14px 12px 10px;
-  font-size: 11px;
-  font-weight: 700;
-  letter-spacing: 0.12em;
-  color: var(--text-muted);
-  border-bottom: 1px solid var(--border);
-  text-transform: uppercase;
-}
-
-.file-tree-bible-btn {
-  background: none;
-  border: none;
-  cursor: pointer;
-  font-size: 14px;
-  line-height: 1;
-  padding: 0 2px;
-  opacity: 0.55;
-  transition: opacity 0.15s;
-  flex-shrink: 0;
-}
-
-.file-tree-bible-btn:hover {
-  opacity: 1;
-}
 
 .file-tree-list {
   overflow-y: auto;
diff --git a/src/renderer/components/FileTree/FileTree.tsx b/src/renderer/components/FileTree/FileTree.tsx
index bfda7ea..3f1384a 100644
--- a/src/renderer/components/FileTree/FileTree.tsx
+++ b/src/renderer/components/FileTree/FileTree.tsx
@@ -1,13 +1,12 @@
 import { useState } from 'react'
 import { useEditorStore } from '../../store/editorStore'
-import { currentEditorView } from '../Editor/MarkdownEditor'
 import { FileTreeNode } from './FileTreeNode'
 import { ContextMenu } from './ContextMenu'
 import type { MenuItem } from './ContextMenu'
 import './FileTree.css'
 
 export function FileTree(): JSX.Element {
-  const { fileTree, activeFilePath, setActiveFile, markSaved, setFileTree } = useEditorStore()
+  const { fileTree, setFileTree } = useEditorStore()
   const [creatingRoot, setCreatingRoot] = useState<'file' | 'dir' | null>(null)
   const [createRootValue, setCreateRootValue] = useState('')
   const [rootMenuPos, setRootMenuPos] = useState<{ x: number; y: number } | null>(null)
@@ -39,39 +38,8 @@ export function FileTree(): JSX.Element {
     }
   }
 
-  const handleOpenStoryBible = async (): Promise<void> => {
-    try {
-      const { path, content } = await window.api.openStoryBible()
-      setActiveFile(path, content)
-      // If the path didn't change (already on Story Bible), the MarkdownEditor's
-      // activeFilePath-keyed effect won't fire. Push content directly, same
-      // pattern as RevisionPanel.restore().
-      if (path === activeFilePath) {
-        const view = currentEditorView
-        if (view) {
-          view.dispatch({
-            changes: { from: 0, to: view.state.doc.length, insert: content }
-          })
-          markSaved()
-        }
-      }
-    } catch (err) {
-      console.error('[FileTree] openStoryBible failed:', err)
-    }
-  }
-
   return (
     <nav className="file-tree">
-      <div className="file-tree-header">
-        <span>HOHOFF</span>
-        <button
-          className="file-tree-bible-btn"
-          onClick={handleOpenStoryBible}
-          title="Open Story Bible"
-        >
-          📖
-        </button>
-      </div>
       <div
         className="file-tree-list"
         onContextMenu={(e) => { e.preventDefault(); setRootMenuPos({ x: e.clientX, y: e.clientY }) }}
diff --git a/src/renderer/styles/app.css b/src/renderer/styles/app.css
index 562947a..d65b74e 100644
--- a/src/renderer/styles/app.css
+++ b/src/renderer/styles/app.css
@@ -194,44 +194,40 @@
   flex-direction: column;
 }
 
-.sidebar-home-btn {
+.sidebar-nav {
   display: flex;
   align-items: center;
-  gap: 7px;
-  width: 100%;
-  padding: 8px 12px;
-  background: none;
-  border: none;
   border-bottom: 1px solid var(--border);
-  color: var(--text-muted);
-  font-family: var(--font-sans);
-  font-size: 11px;
-  letter-spacing: 0.06em;
-  text-transform: uppercase;
-  cursor: pointer;
-  text-align: left;
-  transition: color 0.15s, background 0.15s;
   flex-shrink: 0;
 }
 
-.sidebar-home-btn:hover {
+.sidebar-nav-btn {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 8px 12px;
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  cursor: pointer;
+  transition: color 0.15s, background 0.15s;
+  border-radius: 0;
+}
+
+.sidebar-nav-btn:hover {
   color: var(--text-primary);
   background: var(--active-bg);
 }
 
-.sidebar-home-btn.active {
+.sidebar-nav-btn.active {
   color: var(--accent);
 }
 
-.sidebar-home-icon {
+.sidebar-nav-icon {
   font-size: 14px;
   line-height: 1;
 }
 
-.sidebar-home-label {
-  line-height: 1;
-}
-
 /* ─── Editor area ──────────────────────────────────────────────── */
 .editor-area {
   grid-row: 2;