feat: ship manifest.launcher.md for master-detail launcher

manifest.launcher.md

@@ -0,0 +1,17 @@
+---
+{"summary":"Map editor — vertical layer-chip overlay + atlas-tile picker","author":"calic","tags":["tool","map-editor"],"teaser_images":[]}
+---
+
+# Map Editor
+
+Click-to-paint tile editor with collapsible atlas/tile-picker. Vertical layer-chip overlay (left), atlas+tile picker (bottom-left), status chip (bottom-right).
+
+## Controls
+
+- Mouse-left on grid: paint
+- Mouse-left on layer-chip: switch active layer
+- Mouse-right on layer-chip: toggle visibility
+- E: erase mode
+- R: rotate
+- S: save
+- ESC: quit to launcher

manifest.module

@@ -1,6 +1,6 @@
 {
     "id": "map-editor",
-    "version": "0.3.2",
+    "version": "0.3.3",
     "kind": "module",
     "api": "^0.1",
     "ci_frames": 30,