feat: upgrade init starter app to showcase all DreamStack features

- Imports Card, Badge, Button from components/
- Counter with callback props, Greeting with when/else
- Mood match expression with Badge, Todo dynamic lists
- Full init → build flow verified (51,401 bytes, 0 errors)

compiler/ds-cli/src/main.rs

@@ -1358,39 +1358,71 @@ fn cmd_init(name: Option<String>) {
 
     // Write starter app.ds
     let app_source = r#"-- My DreamStack App
+-- Showcases: imports, components, when/else, match, each, dynamic lists
+
+import { Card } from "./components/card"
+import { Badge } from "./components/badge"
+import { Button } from "./components/button"
 
 let count = 0
 let name = ""
+let darkMode = false
+let mood = "happy"
+let todos = ["Learn DreamStack", "Build something cool"]
+let newTodo = ""
 
 view main = column [
 
   -- Header
-  text "🚀 My App" { variant: "title" }
-  text "Built with DreamStack" { variant: "subtitle" }
+  text "🚀 My DreamStack App" { variant: "title" }
+  text "Built with DreamStack — edit app.ds and reload" { variant: "subtitle" }
 
-  -- Stats
+  -- Dashboard cards
   row [
-    column [
-      text "Users" { variant: "subtitle" }
-      text "1,247" { variant: "title" }
-    ] { variant: "card" }
+    Card { title: "Counter", subtitle: "reactive state" } [
+      text "Count: {count}" { variant: "title" }
+      row [
+        Button { label: "+1", onClick: count += 1, variant: "primary" }
+        Button { label: "-1", onClick: count -= 1, variant: "secondary" }
+        Button { label: "Reset", onClick: count = 0, variant: "ghost" }
+      ]
+    ]
 
-    column [
-      text "Revenue" { variant: "subtitle" }
-      text "$8,420" { variant: "title" }
-    ] { variant: "card" }
+    Card { title: "Greeting", subtitle: "two-way binding" } [
+      input { bind: name, placeholder: "Your name..." }
+      when name -> text "Hello, {name}! 👋"
+      else -> text "Type your name above"
+    ]
   ]
 
-  -- Input
-  text "Your name" { variant: "label" }
-  input { bind: name, placeholder: "Type here..." }
-  text "Hello, {name}!"
-
-  -- Counter
-  row [
-    button "Count: {count}" { click: count += 1, variant: "primary" }
-    button "Reset" { click: count = 0, variant: "ghost" }
+  -- Mood selector with match
+  Card { title: "Mood", subtitle: "match expressions" } [
+    row [
+      button "😊 Happy" { click: mood = "happy", variant: "primary" }
+      button "😢 Sad" { click: mood = "sad", variant: "secondary" }
+      button "🔥 Fired up" { click: mood = "fired", variant: "ghost" }
+    ]
+    match mood
+      "happy" -> Badge { label: "FEELING GREAT 🌟", variant: "success" }
+      "sad" -> Badge { label: "HANG IN THERE 💙", variant: "info" }
+      "fired" -> Badge { label: "LET'S GO 🔥", variant: "warning" }
+      _ -> Badge { label: "HOW ARE YOU?", variant: "info" }
   ]
+
+  -- Todo list with dynamic arrays
+  Card { title: "Todos", subtitle: "dynamic lists" } [
+    row [
+      input { bind: newTodo, placeholder: "New task..." }
+      button "Add" { click: todos.push(newTodo), variant: "primary" }
+    ]
+    each todo in todos ->
+      row [
+        text "→ {todo}"
+        button "×" { click: todos.remove(_idx), variant: "ghost" }
+      ]
+    button "Clear All" { click: todos = [], variant: "ghost" }
+  ]
+
 ]
 "#;
     fs::write(project_dir.join("app.ds"), app_source).expect("Failed to write app.ds");