docs: changelog + README for the UI overhaul (v1.1)

Bump APP_VERSION to 1.1 with a "What's new" entry covering the menu bar,
tabbed control deck, side-by-side panels, status bar, and visual polish.
Add an Interface section to the README. Shortcuts unchanged.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

README.md

@@ -61,6 +61,13 @@ All clips are exactly 8 seconds — the standard length for foley sound datasets
 - **Subprofiles** — lightweight export folder variants for multiple output targets
 - **Review mode** — clean timeline view for navigating scan results without export clutter
 
+### Interface
+
+- **Menu bar** — File / Edit / Scan / View / Help hold the occasional actions (open files, train, scan all, profiles); the profile selector and shortcuts (`?`) sit in the top-right corner
+- **Control deck** — a compact tabbed panel under the video groups the settings into **Export** (label, name, folder, format, resize, duration/clips/spread, workers), **Crop & Track**, and **Scan** (model, threshold, fuse, scan/auto/speech/review)
+- **Side-by-side panels** — pin deck panels to view them as resizable columns: right-click a deck tab → *Show side-by-side*, or toggle them under *View ▸ Side-by-side panels*; drag the dividers to reallocate space, and the layout persists between sessions
+- **Status bar** — export/scan progress and messages, with the current file · profile · worker count always shown
+
 ## Keyboard shortcuts
 
 | Key | Action |

main.py

@@ -4729,9 +4729,28 @@ class MainWindow(QMainWindow):
 
     # ── Changelog ────────────────────────────────────────────
 
-    APP_VERSION = "1.0"
+    APP_VERSION = "1.1"
     _SPLIT_HEADER_H = 22  # deck split-column header height (keep both deck spots in sync)
     CHANGELOG: list[tuple[str, list[str]]] = [
+        ("1.1", [
+            "<b>Reorganized interface</b> — the dense control rows are now a "
+            "<b>menu bar</b> (File / Edit / Scan / View / Help) for occasional "
+            "actions plus a compact <b>tabbed control deck</b> "
+            "(Export / Crop &amp; Track / Scan) under the video. Every control "
+            "and keyboard shortcut works exactly as before; the profile selector "
+            "and shortcuts (?) moved to the top-right corner.",
+            "<b>Side-by-side panels</b> — pin deck panels to view them as "
+            "resizable columns: right-click a deck tab → <i>Show side-by-side</i>, "
+            "or toggle them under <i>View ▸ Side-by-side panels</i>. Drag the "
+            "dividers to reallocate space; the layout is remembered between "
+            "sessions.",
+            "<b>Status bar</b> — export/scan progress and messages now appear in "
+            "a real status bar, with the current file, profile, and worker count "
+            "always shown on the right.",
+            "<b>Visual polish</b> — a primary Export button, a consistent "
+            "highlight for toggle buttons (×2 / ×4 / Lock / Review), grouped "
+            "controls with separators, and clearer labels.",
+        ]),
         ("1.0", [
             "<b>New export layout</b> — clips are now stored in per-video "
             "<code>vid_NNN/</code> folders instead of per-clip "