diff --git a/design/autocomplete-flat-list.pen b/design/autocomplete-flat-list.pen
new file mode 100644
index 00000000..8c37ffd1
--- /dev/null
+++ b/design/autocomplete-flat-list.pen
@@ -0,0 +1,247 @@
+{
+  "children": [
+    {
+      "type": "frame",
+      "id": "acFlatList",
+      "x": 0,
+      "y": 0,
+      "name": "Autocomplete — Flat List with Type Badge",
+      "clip": true,
+      "width": 400,
+      "height": 380,
+      "fill": "#FFFFFF",
+      "layout": "vertical",
+      "gap": 0,
+      "children": [
+        {
+          "type": "frame",
+          "id": "acHeader",
+          "name": "Context: Editor line with [[query",
+          "width": "fill_container",
+          "height": 40,
+          "fill": "#FAFAFA",
+          "padding": [10, 16],
+          "alignItems": "center",
+          "children": [
+            {
+              "type": "text",
+              "id": "acQueryLine",
+              "content": "Working on [[proj",
+              "fontSize": 15,
+              "fill": "#1a1a1a"
+            }
+          ]
+        },
+        {
+          "type": "frame",
+          "id": "acMenu",
+          "name": "Suggestion Menu (flat, no group headers)",
+          "width": 320,
+          "fill": "#FFFFFF",
+          "layout": "vertical",
+          "gap": 0,
+          "padding": 4,
+          "cornerRadius": 6,
+          "stroke": {
+            "align": "outside",
+            "thickness": 1,
+            "fill": "rgba(0,0,0,0.1)"
+          },
+          "children": [
+            {
+              "type": "frame",
+              "id": "acItem1",
+              "name": "Item: Build Laputa (Project)",
+              "width": "fill_container",
+              "height": 32,
+              "padding": [6, 10],
+              "cornerRadius": 4,
+              "fill": "rgba(21,93,255,0.08)",
+              "alignItems": "center",
+              "justifyContent": "space-between",
+              "children": [
+                {
+                  "type": "text",
+                  "id": "acTitle1",
+                  "content": "Build Laputa",
+                  "fontSize": 13,
+                  "fill": "#1a1a1a",
+                  "fontWeight": "400"
+                },
+                {
+                  "type": "text",
+                  "id": "acType1",
+                  "content": "Project",
+                  "fontSize": 11,
+                  "fontWeight": "500",
+                  "fill": "var(--accent-red, #E53935)",
+                  "opacity": 0.8
+                }
+              ]
+            },
+            {
+              "type": "frame",
+              "id": "acItem2",
+              "name": "Item: Project Planning (Responsibility)",
+              "width": "fill_container",
+              "height": 32,
+              "padding": [6, 10],
+              "cornerRadius": 4,
+              "alignItems": "center",
+              "justifyContent": "space-between",
+              "children": [
+                {
+                  "type": "text",
+                  "id": "acTitle2",
+                  "content": "Project Planning",
+                  "fontSize": 13,
+                  "fill": "#1a1a1a",
+                  "fontWeight": "400"
+                },
+                {
+                  "type": "text",
+                  "id": "acType2",
+                  "content": "Responsibility",
+                  "fontSize": 11,
+                  "fontWeight": "500",
+                  "fill": "var(--accent-purple, #7B1FA2)",
+                  "opacity": 0.8
+                }
+              ]
+            },
+            {
+              "type": "frame",
+              "id": "acItem3",
+              "name": "Item: Q1 Project Review (no type = Note)",
+              "width": "fill_container",
+              "height": 32,
+              "padding": [6, 10],
+              "cornerRadius": 4,
+              "alignItems": "center",
+              "justifyContent": "space-between",
+              "children": [
+                {
+                  "type": "text",
+                  "id": "acTitle3",
+                  "content": "Q1 Project Review",
+                  "fontSize": 13,
+                  "fill": "#1a1a1a",
+                  "fontWeight": "400"
+                }
+              ]
+            },
+            {
+              "type": "frame",
+              "id": "acItem4",
+              "name": "Item: Project Kickoff (Event)",
+              "width": "fill_container",
+              "height": 32,
+              "padding": [6, 10],
+              "cornerRadius": 4,
+              "alignItems": "center",
+              "justifyContent": "space-between",
+              "children": [
+                {
+                  "type": "text",
+                  "id": "acTitle4",
+                  "content": "Project Kickoff",
+                  "fontSize": 13,
+                  "fill": "#1a1a1a",
+                  "fontWeight": "400"
+                },
+                {
+                  "type": "text",
+                  "id": "acType4",
+                  "content": "Event",
+                  "fontSize": 11,
+                  "fontWeight": "500",
+                  "fill": "var(--accent-yellow, #F9A825)",
+                  "opacity": 0.8
+                }
+              ]
+            },
+            {
+              "type": "frame",
+              "id": "acItem5",
+              "name": "Item: Side Project Ideas (Topic)",
+              "width": "fill_container",
+              "height": 32,
+              "padding": [6, 10],
+              "cornerRadius": 4,
+              "alignItems": "center",
+              "justifyContent": "space-between",
+              "children": [
+                {
+                  "type": "text",
+                  "id": "acTitle5",
+                  "content": "Side Project Ideas",
+                  "fontSize": 13,
+                  "fill": "#1a1a1a",
+                  "fontWeight": "400"
+                },
+                {
+                  "type": "text",
+                  "id": "acType5",
+                  "content": "Topic",
+                  "fontSize": 11,
+                  "fontWeight": "500",
+                  "fill": "var(--accent-green, #43A047)",
+                  "opacity": 0.8
+                }
+              ]
+            },
+            {
+              "type": "frame",
+              "id": "acItem6",
+              "name": "Item: Project Retrospective (no type)",
+              "width": "fill_container",
+              "height": 32,
+              "padding": [6, 10],
+              "cornerRadius": 4,
+              "alignItems": "center",
+              "justifyContent": "space-between",
+              "children": [
+                {
+                  "type": "text",
+                  "id": "acTitle6",
+                  "content": "Project Retrospective",
+                  "fontSize": 13,
+                  "fill": "#1a1a1a",
+                  "fontWeight": "400"
+                }
+              ]
+            }
+          ]
+        },
+        {
+          "type": "frame",
+          "id": "acAnnotation",
+          "name": "Design Notes",
+          "width": "fill_container",
+          "padding": [12, 16],
+          "layout": "vertical",
+          "gap": 6,
+          "children": [
+            {
+              "type": "text",
+              "id": "acNote1",
+              "content": "Key changes from previous design:",
+              "fontSize": 12,
+              "fontWeight": "600",
+              "fill": "#666"
+            },
+            {
+              "type": "text",
+              "id": "acNote2",
+              "content": "• Flat list — no group headers for type sections\n• Sorted by match relevance (fuzzy score)\n• Type badge on right with accent color\n• No badge for untyped notes (\"Note\")\n• Max 10 results visible\n• Long type names truncated with ellipsis",
+              "fontSize": 11,
+              "fill": "#999",
+              "lineHeight": 1.6
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "variables": {}
+}