SNAKE game v0.3: round screen, swipe control

- 16x16 grid, 320px board centered on round 466 screen, designWidth 466
- pure snake logic in src/common/snake.js (step/turn/rotateDir/spawnFood, TDD'd)
- for-directive segment rendering, show-gated game-over overlay, 300ms tick
- swipe direction input (crown rotation confirmed unsupported on Vela S4)
- tests: snake logic + page wiring

src/manifest.json

@@ -0,0 +1,32 @@
+{
+  "package": "com.ilias.snake",
+  "name": "SNAKE",
+  "icon": "/common/icon.png",
+  "versionName": "0.3",
+  "versionCode": 3,
+  "minAPILevel": 1,
+  "deviceTypeList": [
+    "watch"
+  ],
+  "config": {
+    "logLevel": "debug",
+    "designWidth": 466
+  },
+  "router": {
+    "entry": "pages/index",
+    "pages": {
+      "pages/index": {
+        "component": "index",
+        "path": "/"
+      }
+    }
+  },
+  "display": {
+    "backgroundColor": "#000000"
+  },
+  "features": [
+    {
+      "name": "system.router"
+    }
+  ]
+}