diff --git a/app.py b/app.py
index 90ca0c7..79883ed 100644
--- a/app.py
+++ b/app.py
@@ -4,18 +4,25 @@ from engine import SorterEngine
 import tab_time_discovery
 import tab_id_review
 
-st.set_page_config(layout="wide", page_title="Turbo Sorter Pro")
+# Page Configuration
+st.set_page_config(layout="wide", page_title="Advanced Sorter v8.0")
 
-# --- Session State ---
-if 'history' not in st.session_state: st.session_state.history = []
-if 'idx_time' not in st.session_state: st.session_state.idx_time = 0
-if 'idx_id' not in st.session_state: st.session_state.idx_id = 0
+# --- Session State Initialization ---
+if 'history' not in st.session_state: 
+    st.session_state.history = []
+if 'idx_time' not in st.session_state: 
+    st.session_state.idx_time = 0
+if 'idx_id' not in st.session_state: 
+    st.session_state.idx_id = 0
 
 # --- Status Bar ---
-matches = len([h for h in st.session_state.history if 'link' in h['type']])
-st.info(f"📊 **Session Stats:** {matches} Matches Created")
+# Calculates stats based on the history stack
+matches_created = len([h for h in st.session_state.history if 'link' in h['type']])
+unused_count = len([h for h in st.session_state.history if h['type'] == 'unused'])
 
-# --- Sidebar ---
+st.info(f"📊 **Session Stats:** {matches_created} Matches Linked | {unused_count} Moved to Unused")
+
+# --- Sidebar: Configuration & Profiles ---
 BASE_PATH = "/storage"
 favs = SorterEngine.load_favorites()
 
@@ -23,40 +30,57 @@ with st.sidebar:
     st.title("⭐ Profiles")
     selected_fav = st.selectbox("Load Favorite", ["None"] + list(favs.keys()))
     
+    # Delete Profile Logic
     if selected_fav != "None":
-        if st.button("🗑️ Delete Selected Profile"):
+        if st.button("🗑️ Delete Selected Profile", type="secondary"):
             SorterEngine.delete_favorite(selected_fav)
             st.rerun()
 
     st.divider()
     st.title("📁 Paths")
+    # Sets default path from favorites or base storage
     def_t = favs[selected_fav]['target'] if selected_fav != "None" else BASE_PATH
-    def_c = favs[selected_fav]['control'] if selected_fav != "None" else BASE_PATH
 
-    path_t = st.text_input("Path 1 (Target)", value=def_t)
-    path_c = st.text_input("Path 2 (Control)", value=def_c)
+    # User inputs for target folder
+    path_t = st.text_input("Target Folder Path (Folder 1)", value=def_t)
+    
+    # Automatic Sibling Detection for UI feedback
+    siblings = SorterEngine.get_sibling_controls(path_t)
+    st.caption(f"Found {len(siblings)} sibling control folders at this level.")
 
+    # Create New Profile
     with st.expander("💾 Create New Profile"):
         new_fav_name = st.text_input("Profile Name")
         if st.button("Save Profile"):
             if new_fav_name:
-                SorterEngine.save_favorite(new_fav_name, path_t, path_c)
+                SorterEngine.save_favorite(new_fav_name, path_t, path_t) # Control follows target sibling logic
                 st.success(f"Saved {new_fav_name}")
                 st.rerun()
 
     st.divider()
-    quality = st.slider("Quality", 5, 100, 40)
-    threshold = st.number_input("Threshold (s)", value=50)
-    id_val = st.number_input("Next ID", value=SorterEngine.get_max_id_number(path_t) + 1)
+    # Global Settings matched to original script logic
+    quality = st.slider("Bandwidth Quality", 5, 100, 40)
+    threshold = st.number_input("Time Threshold (s)", value=50)
+    
+    # ID Logic: Finds next ID based on existing files
+    id_val = st.number_input("Next ID Number", value=SorterEngine.get_max_id_number(path_t) + 1)
     prefix = f"id{int(id_val):03d}_"
 
+    # Undo Action (Z shortcut logic)
     if st.button("↶ UNDO", use_container_width=True, disabled=not st.session_state.history):
         SorterEngine.revert_action(st.session_state.history.pop())
+        # Revert indices based on the type of action undone
+        if st.session_state.idx_id > 0: st.session_state.idx_id -= 1
         st.rerun()
 
-# --- Reordered Tabs ---
-t1, t2 = st.tabs(["🕒 Tab 1: Time Discovery", "🆔 Tab 2: ID Match Review"])
+# --- Main Tab Navigation ---
+# Reordered: Discovery first, then Review
+t1, t2 = st.tabs(["🕒 1. Time Discovery", "🆔 2. ID Match Review"])
+
 with t1:
-    tab_time_discovery.render(path_t, path_c, quality, threshold, prefix)
+    # Tab 1: Discovery uses sibling-scan logic
+    tab_time_discovery.render(path_t, quality, threshold, prefix)
+
 with t2:
-    tab_id_review.render(path_t, path_c, quality)
\ No newline at end of file
+    # Tab 2: Review matches across all siblings
+    tab_id_review.render(path_t, quality)
\ No newline at end of file