diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae5e29c..2fea560 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,7 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - MarkdownPane link navigation: relative file links open in Files tab, external URLs open in system browser via `xdg-open`, anchor links scroll in-page (MarkdownPane.svelte, ProjectFiles.svelte, lib.rs)
 - `open_url` Tauri command for opening http/https URLs in system browser (lib.rs)
 - Tab system overhaul: renamed Claude→Model, Files→Docs, added 3 new tabs (Files, SSH, Memory) with PERSISTED-EAGER/LAZY mount strategies (ProjectBox.svelte)
-- FilesTab: VSCode-style directory tree sidebar + content viewer with shiki syntax highlighting, image display via convertFileSrc, 10MB file size gate (FilesTab.svelte)
+- FilesTab: VSCode-style directory tree sidebar + tabbed content viewer with shiki syntax highlighting, word wrap, image display via convertFileSrc, 10MB file size gate, collapsible/resizable sidebar, preview vs pinned tabs (FilesTab.svelte)
 - SshTab: SSH connection CRUD panel with launch-to-terminal button, reuses existing ssh-bridge.ts model (SshTab.svelte)
 - MemoriesTab: pluggable knowledge explorer with MemoryAdapter interface, adapter registry, search, tag display, expandable cards (MemoriesTab.svelte, memory-adapter.ts)
 - Rust `list_directory_children` command: lazy tree expansion, hidden files skipped, dirs-first alphabetical sort (lib.rs)