diff --git a/tab_timeline_wip.py b/tab_timeline_wip.py
new file mode 100644
index 0000000..b21a9ec
--- /dev/null
+++ b/tab_timeline_wip.py
@@ -0,0 +1,140 @@
+import streamlit as st
+import json
+from history_tree import HistoryTree
+from utils import save_json
+from streamlit_agraph import agraph, Node, Edge, Config
+
+def render_timeline_wip(data, file_path):
+    tree_data = data.get("history_tree", {})
+    if not tree_data:
+        st.info("No history timeline exists.")
+        return
+
+    htree = HistoryTree(tree_data)
+
+    # --- 1. PREPARE NODES & EDGES ---
+    nodes = []
+    edges = []
+    
+    # Sort nodes to ensure consistent rendering order
+    sorted_nodes = sorted(htree.nodes.values(), key=lambda x: x["timestamp"])
+    
+    for n in sorted_nodes:
+        nid = n["id"]
+        note = n.get('note', 'Step')
+        # Shorten text for the bubble
+        short_note = (note[:15] + '..') if len(note) > 15 else note
+        
+        # Color Logic
+        color = "#ffffff"     # Default White
+        border = "#666666"    # Grey border
+        
+        if nid == htree.head_id:
+            color = "#fff6cd" # Yellow (Current)
+            border = "#eebb00"
+        
+        if nid in htree.branches.values():
+            if color == "#ffffff": 
+                color = "#e6ffe6" # Green (Tips)
+                border = "#44aa44"
+
+        nodes.append(Node(
+            id=nid,
+            label=f"{short_note}\n({nid[:4]})",
+            size=25,
+            shape="box",
+            color=color,
+            borderWidth=1,
+            borderColor=border,
+            # Force text to black so it's readable
+            font={'color': 'black', 'face': 'Arial', 'size': 14}
+        ))
+        
+        if n["parent"] and n["parent"] in htree.nodes:
+            edges.append(Edge(
+                source=n["parent"],
+                target=nid,
+                color="#aaaaaa",
+                type="STRAIGHT" # Keeps lines clean
+            ))
+
+    # --- 2. ROBUST CONFIGURATION ---
+    # This specific config block is key to fixing the blank screen
+    config = Config(
+        width="100%",
+        height="500px",  # MUST be string with px
+        directed=True, 
+        physics=False,   # False = Rigid Tree (Better for timelines)
+        hierarchical=True, 
+        layout={
+            "hierarchical": {
+                "enabled": True,
+                "levelSeparation": 150,
+                "nodeSpacing": 100,
+                "treeSpacing": 100,
+                "direction": "LR", # Left-to-Right
+                "sortMethod": "directed"
+            }
+        }
+    )
+
+    st.subheader("🧪 Interactive Playground")
+    st.caption("Click any node to load it into the inspector below.")
+    
+    # Render Graph
+    # This returns the ID of the node you click
+    clicked_node_id = agraph(nodes=nodes, edges=edges, config=config)
+
+    st.markdown("---")
+
+    # --- 3. INTERACTIVE INSPECTOR ---
+    # Determine which node to show
+    target_node_id = clicked_node_id if clicked_node_id else htree.head_id
+
+    if target_node_id and target_node_id in htree.nodes:
+        selected_node = htree.nodes[target_node_id]
+        node_data = selected_node["data"]
+
+        c_h1, c_h2 = st.columns([3, 1])
+        c_h1.markdown(f"### 🔎 Inspecting: {selected_node.get('note', 'Step')}")
+        c_h1.caption(f"ID: {target_node_id}")
+
+        # Diff View
+        with st.expander(f"Compare with Current State", expanded=True):
+            diffs = []
+            all_keys = set(data.keys()) | set(node_data.keys())
+            ignore_keys = {"history_tree", "prompt_history", "batch_data", "ui_reset_token"}
+            
+            for k in all_keys:
+                if k in ignore_keys: continue
+                val_now = data.get(k, "N/A")
+                val_then = node_data.get(k, "N/A")
+                if str(val_now) != str(val_then):
+                    diffs.append((k, val_now, val_then))
+
+            if not diffs:
+                st.caption("✅ Identical to current state")
+            else:
+                for k, v_now, v_then in diffs:
+                    dc1, dc2, dc3 = st.columns([1, 2, 2])
+                    dc1.markdown(f"**{k}**")
+                    dc2.markdown(f"🔴 `{str(v_now)[:30]}`")
+                    dc3.markdown(f"🟢 `{str(v_then)[:30]}`")
+
+        # Actions
+        with c_h2:
+            st.write(""); st.write("")
+            if st.button("⏪ Restore This Version", type="primary", use_container_width=True):
+                data.update(node_data)
+                htree.head_id = target_node_id
+                
+                data["history_tree"] = htree.to_dict()
+                save_json(file_path, data)
+                
+                st.session_state.ui_reset_token += 1
+                
+                label = f"{selected_node.get('note')} ({target_node_id[:4]})"
+                st.session_state.restored_indicator = label
+                
+                st.toast(f"Restored {target_node_id}!", icon="🔄")
+                st.rerun()