From 209ed959ad99c545b8638e36a05c447abcc74bb4 Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Wed, 10 Jun 2026 23:49:25 +0200
Subject: [PATCH 1/7] chore: finalize motoko/flying_ninja migration to icp-cli

Upgrades icp.yaml to motoko@v5.0.0 and asset-canister@v2.2.1, updates
mops.toml toolchain to moc 1.9.0 / core 2.5.0 with correct args format,
removes dfx fallbacks from vite.config.js and actor.js, adds Makefile
with tests for all public functions, adds CI workflow, rewrites README,
and deletes dfx.json, BUILD.md, and .devcontainer/.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .github/workflows/flying_ninja.yml            | 43 +++++++++++++++++++
 .../.devcontainer/devcontainer.json           | 20 ---------
 motoko/flying_ninja/BUILD.md                  | 26 -----------
 motoko/flying_ninja/Makefile                  | 28 ++++++++++++
 motoko/flying_ninja/README.md                 | 39 +++++------------
 motoko/flying_ninja/backend/app.mo            |  2 +-
 motoko/flying_ninja/dfx.json                  | 23 ----------
 motoko/flying_ninja/frontend/src/actor.js     |  8 ++--
 motoko/flying_ninja/frontend/vite.config.js   | 43 ++-----------------
 motoko/flying_ninja/icp.yaml                  |  7 +--
 motoko/flying_ninja/mops.toml                 | 10 +++--
 11 files changed, 97 insertions(+), 152 deletions(-)
 create mode 100644 .github/workflows/flying_ninja.yml
 delete mode 100644 motoko/flying_ninja/.devcontainer/devcontainer.json
 delete mode 100644 motoko/flying_ninja/BUILD.md
 create mode 100644 motoko/flying_ninja/Makefile
 delete mode 100644 motoko/flying_ninja/dfx.json

diff --git a/.github/workflows/flying_ninja.yml b/.github/workflows/flying_ninja.yml
new file mode 100644
index 000000000..5148d7084
--- /dev/null
+++ b/.github/workflows/flying_ninja.yml
@@ -0,0 +1,43 @@
+name: flying_ninja
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - motoko/flying_ninja/**
+      - rust/flying_ninja/**
+      - .github/workflows/flying_ninja.yml
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  motoko-flying_ninja:
+    runs-on: ubuntu-24.04
+    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.1
+    env:
+      ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - name: Deploy and test
+        working-directory: motoko/flying_ninja
+        run: |
+          icp network start -d
+          icp deploy
+          make test
+
+  rust-flying_ninja:
+    runs-on: ubuntu-24.04
+    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.1
+    env:
+      ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - name: Deploy and test
+        working-directory: rust/flying_ninja
+        run: |
+          icp network start -d
+          icp deploy
+          make test
diff --git a/motoko/flying_ninja/.devcontainer/devcontainer.json b/motoko/flying_ninja/.devcontainer/devcontainer.json
deleted file mode 100644
index ebb0b8bcc..000000000
--- a/motoko/flying_ninja/.devcontainer/devcontainer.json
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-  "name": "ICP Dev Environment",
-  "image": "ghcr.io/dfinity/icp-dev-env-slim:22",
-  "forwardPorts": [4943, 5173],
-  "portsAttributes": {
-    "4943": {
-      "label": "dfx",
-      "onAutoForward": "ignore"
-    },
-    "5173": {
-      "label": "vite",
-      "onAutoForward": "openBrowser"
-    }
-  },
-  "customizations": {
-    "vscode": {
-      "extensions": ["dfinity-foundation.vscode-motoko"]
-    }
-  }
-}
diff --git a/motoko/flying_ninja/BUILD.md b/motoko/flying_ninja/BUILD.md
deleted file mode 100644
index 8877d3ed2..000000000
--- a/motoko/flying_ninja/BUILD.md
+++ /dev/null
@@ -1,26 +0,0 @@
-# Continue building locally
-
-Projects deployed through ICP Ninja are temporary; they will only be live for 30 minutes before they are removed. To continue building locally, follow these steps.
-
-### 1. Install developer tools
-
-Install [Node.js](https://nodejs.org/en/download/) and [icp-cli](https://cli.internetcomputer.org):
-
-```bash
-npm install -g @icp-sdk/icp-cli @icp-sdk/ic-wasm
-```
-
-Then navigate into your project's directory that you downloaded from ICP Ninja.
-
-### 2. Deploy locally
-
-Start the local network and deploy the project:
-
-```bash
-icp network start -d
-icp deploy
-```
-
-## Additional examples
-
-Additional code examples and sample applications can be found in the [DFINITY examples repo](https://github.com/dfinity/examples).
diff --git a/motoko/flying_ninja/Makefile b/motoko/flying_ninja/Makefile
new file mode 100644
index 000000000..c5f5b3e90
--- /dev/null
+++ b/motoko/flying_ninja/Makefile
@@ -0,0 +1,28 @@
+.PHONY: test
+
+test:
+	@echo "=== Test 1: isHighScore returns true when leaderboard is empty ==="
+	@result=$$(icp canister call backend isHighScore '(42)') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q 'true' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
+
+	@echo "=== Test 2: addLeaderboardEntry returns entry in leaderboard ==="
+	@result=$$(icp canister call backend addLeaderboardEntry '("Alice", 100)') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q '"Alice"' && \
+	  echo "$$result" | grep -q '100' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
+
+	@echo "=== Test 3: getLeaderboard returns persisted entry ==="
+	@result=$$(icp canister call backend getLeaderboard '()') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q '"Alice"' && \
+	  echo "$$result" | grep -q '100' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
+
+	@echo "=== Test 4: getRandomness returns a blob ==="
+	@result=$$(icp canister call backend getRandomness '()') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q 'blob' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
diff --git a/motoko/flying_ninja/README.md b/motoko/flying_ninja/README.md
index 8fbc1223b..13bacdf18 100644
--- a/motoko/flying_ninja/README.md
+++ b/motoko/flying_ninja/README.md
@@ -1,53 +1,34 @@
 # Flying Ninja
 
-[View this sample's code on GitHub](https://github.com/dfinity/examples/tree/master/motoko/flying_ninja)
-
-## Overview
-
-Flying Ninja is a 2D side-scroller game where players interact with the flying ninja character using their keyboard's space bar to move up and down. The goal is to avoid the obstacles and obtain points for each obstacle you dodge. When the game ends, the user can add their score to the leaderboard.
-
-## Deploying from ICP Ninja
-
-This example can be deployed directly from [ICP Ninja](https://icp.ninja), a browser-based IDE for ICP. To continue developing locally after deploying from ICP Ninja, see [BUILD.md](BUILD.md).
-
-[![Open in ICP Ninja](https://icp.ninja/assets/open.svg)](https://icp.ninja/i?g=https://github.com/dfinity/examples/motoko/flying_ninja)
-
-> **Note:** ICP Ninja currently uses `dfx` under the hood, which is why this example includes a `dfx.json` configuration file. `dfx` is the legacy CLI, being superseded by [icp-cli](https://cli.internetcomputer.org), which is what developers should use for local development.
+Flying Ninja is a 2D side-scroller game where players control a ninja character using the space bar to move up and down, dodging obstacles to earn points. When the game ends, players can submit their score to an on-chain leaderboard backed by a Motoko canister on ICP.
 
 ## Build and deploy from the command line
 
 ### Prerequisites
 
-- [x] Install [Node.js](https://nodejs.org/en/download/)
-- [x] Install [icp-cli](https://cli.internetcomputer.org): `npm install -g @icp-sdk/icp-cli @icp-sdk/ic-wasm`
+- Node.js
+- icp-cli: `npm install -g @icp-sdk/icp-cli @icp-sdk/ic-wasm`
 
 ### Install
 
-Clone the example project:
-
 ```bash
 git clone https://github.com/dfinity/examples
 cd examples/motoko/flying_ninja
 ```
 
-### Deployment
-
-Start the local network:
+### Deploy and test
 
 ```bash
 icp network start -d
-```
-
-Deploy the canisters:
-
-```bash
 icp deploy
+make test
+icp network stop
 ```
 
-Stop the local network when done:
+For frontend development with hot reload:
 
 ```bash
-icp network stop
+npm run dev
 ```
 
 ## Updating the Candid interface
@@ -57,9 +38,9 @@ The `backend/backend.did` file defines the backend canister's public interface.
 If you modify the backend's public API, regenerate the `.did` file:
 
 ```bash
-$(mops toolchain bin moc) --idl $(mops sources) -o backend/backend.did backend/app.mo
+$(mops toolchain bin moc) --idl -o backend/backend.did backend/app.mo
 ```
 
 ## Security considerations and best practices
 
-If you base your application on this example, it is recommended that you familiarize yourself with and adhere to the [security best practices](https://internetcomputer.org/docs/building-apps/security/overview) for developing on ICP. This example may not implement all the best practices.
+Refer to the [security best practices](https://docs.internetcomputer.org/guides/security/overview) for information on security and best practices for your ICP app.
diff --git a/motoko/flying_ninja/backend/app.mo b/motoko/flying_ninja/backend/app.mo
index 6ac759446..ae68fad7d 100644
--- a/motoko/flying_ninja/backend/app.mo
+++ b/motoko/flying_ninja/backend/app.mo
@@ -2,7 +2,7 @@ import Array "mo:core/Array";
 import Nat "mo:core/Nat";
 import Random "mo:core/Random";
 
-persistent actor FlyingNinja {
+actor FlyingNinja {
   type Order = { #less; #equal; #greater };
   type LeaderboardEntry = {
     name : Text;
diff --git a/motoko/flying_ninja/dfx.json b/motoko/flying_ninja/dfx.json
deleted file mode 100644
index d073ee09f..000000000
--- a/motoko/flying_ninja/dfx.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "canisters": {
-    "backend": {
-      "main": "backend/app.mo",
-      "type": "motoko",
-      "args": "--enhanced-orthogonal-persistence"
-    },
-    "frontend": {
-      "dependencies": ["backend"],
-      "frontend": {
-        "entrypoint": "frontend/index.html"
-      },
-      "source": ["frontend/dist"],
-      "type": "assets"
-    }
-  },
-  "output_env_file": ".env",
-  "defaults": {
-    "build": {
-      "packtool": "mops sources"
-    }
-  }
-}
diff --git a/motoko/flying_ninja/frontend/src/actor.js b/motoko/flying_ninja/frontend/src/actor.js
index 2f487dbdb..963914fc8 100644
--- a/motoko/flying_ninja/frontend/src/actor.js
+++ b/motoko/flying_ninja/frontend/src/actor.js
@@ -7,14 +7,12 @@ import { createActor } from "./bindings/backend";
 // via Set-Cookie header (see vite.config.js).
 const canisterEnv = safeGetCanisterEnv();
 
-// Resolve canister ID: cookie (icp-cli + dev server) → env var (dfx build-time)
-const canisterId =
-  canisterEnv?.["PUBLIC_CANISTER_ID:backend"] ??
-  process.env.CANISTER_ID_BACKEND;
+// Resolve canister ID from cookie (icp-cli + dev server)
+const canisterId = canisterEnv?.["PUBLIC_CANISTER_ID:backend"];
 
 if (!canisterId) {
   throw new Error(
-    "Canister ID for 'backend' not found. Run 'icp deploy' or 'dfx deploy' first."
+    "Canister ID for 'backend' not found. Run 'icp deploy' first."
   );
 }
 
diff --git a/motoko/flying_ninja/frontend/vite.config.js b/motoko/flying_ninja/frontend/vite.config.js
index b5ac17930..d1495b37c 100644
--- a/motoko/flying_ninja/frontend/vite.config.js
+++ b/motoko/flying_ninja/frontend/vite.config.js
@@ -1,4 +1,4 @@
-import { defineConfig, loadEnv } from "vite";
+import { defineConfig } from "vite";
 import react from "@vitejs/plugin-react";
 import { execSync } from "child_process";
 import { icpBindgen } from "@icp-sdk/bindgen/plugins/vite";
@@ -28,44 +28,12 @@ function getDevServerConfig() {
     };
   } catch {}
 
-  // Try dfx
-  try {
-    const pingResult = JSON.parse(
-      execSync("dfx ping", { encoding: "utf-8", stdio: "pipe" })
-    );
-    const rootKeyHex = Buffer.from(pingResult.root_key).toString("hex");
-    const canisterId = execSync("dfx canister id backend", {
-      encoding: "utf-8",
-      stdio: "pipe",
-    }).trim();
-    return {
-      headers: {
-        "Set-Cookie": `ic_env=${encodeURIComponent(
-          `ic_root_key=${rootKeyHex}&PUBLIC_CANISTER_ID:backend=${canisterId}`
-        )}; SameSite=Lax;`,
-      },
-      proxy: {
-        "/api": {
-          target: "http://127.0.0.1:4943",
-          changeOrigin: true,
-        },
-      },
-      host: "127.0.0.1",
-    };
-  } catch {}
-
   throw new Error(
-    "No local network running. Start with:\n  icp network start -d && icp deploy\nor:\n  dfx start --background && dfx deploy"
+    "No local network running. Start with:\n  icp network start -d && icp deploy"
   );
 }
 
-export default defineConfig(({ command, mode }) => {
-  // dfx generates ../.env with CANISTER_ID_* vars on deploy. Bake them into the
-  // bundle so actor.js can fall back to them when the ic_env cookie does not
-  // contain canister IDs (dfx does not inject PUBLIC_CANISTER_ID:* env vars
-  // into the asset canister, unlike icp-cli).
-  const env = loadEnv(mode, "..", ["CANISTER_"]);
-
+export default defineConfig(({ command }) => {
   return {
     base: "./",
     plugins: [
@@ -75,11 +43,6 @@ export default defineConfig(({ command, mode }) => {
         outDir: "./src/bindings",
       }),
     ],
-    define: {
-      "process.env.CANISTER_ID_BACKEND": JSON.stringify(
-        env.CANISTER_ID_BACKEND
-      ),
-    },
     optimizeDeps: {
       esbuildOptions: { define: { global: "globalThis" } },
     },
diff --git a/motoko/flying_ninja/icp.yaml b/motoko/flying_ninja/icp.yaml
index a4edd3a0e..bd053999d 100644
--- a/motoko/flying_ninja/icp.yaml
+++ b/motoko/flying_ninja/icp.yaml
@@ -1,14 +1,11 @@
 canisters:
   - name: backend
     recipe:
-      type: "@dfinity/motoko@v4.1.0"
-      configuration:
-        main: backend/app.mo
-        candid: backend/backend.did
+      type: "@dfinity/motoko@v5.0.0"
 
   - name: frontend
     recipe:
-      type: "@dfinity/asset-canister@v2.1.0"
+      type: "@dfinity/asset-canister@v2.2.1"
       configuration:
         dir: frontend/dist
         build:
diff --git a/motoko/flying_ninja/mops.toml b/motoko/flying_ninja/mops.toml
index 2de72e881..ca7eed3e6 100644
--- a/motoko/flying_ninja/mops.toml
+++ b/motoko/flying_ninja/mops.toml
@@ -1,13 +1,17 @@
 # Motoko dependencies (https://mops.one/)
 
 [toolchain]
-moc = "1.5.1"
+moc = "1.9.0"
 
 [dependencies]
-core = "2.4.0"
+core = "2.5.0"
 
 [moc]
 # M0236: use context dot notation (e.g. map.get(k) instead of Map.get(map, compare, k))
 # M0237: redundant explicit implicit arguments (e.g. Nat.compare is inferred automatically)
 # M0223: redundant type instantiation (e.g. Array.tabulate instead of Array.tabulate<T>)
-args = ["-W", "M0236", "-W", "M0237", "-W", "M0223"]
+args = ["--default-persistent-actors", "-W=M0236,M0237,M0223"]
+
+[canisters.backend]
+main = "backend/app.mo"
+candid = "backend/backend.did"

From d37cd6d7b33e3cf6ddc3914813570c2ab29faabc Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Thu, 11 Jun 2026 00:48:12 +0200
Subject: [PATCH 2/7] feat: migrate rust/flying_ninja to icp-cli; bump
 icp-dev-env to 0.3.2
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Bump @dfinity/asset-canister v2.1.0 → v2.2.1
- Bump ic-cdk 0.16 → 0.20, candid 0.10.10 → 0.10
- Add Makefile with 4 tests
- Delete dfx.json, BUILD.md
- Bump both container images to icp-dev-env 0.3.2

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .github/workflows/flying_ninja.yml            |  4 +--
 .../.devcontainer/devcontainer.json           | 20 -------------
 rust/flying_ninja/BUILD.md                    | 26 -----------------
 rust/flying_ninja/Makefile                    | 26 +++++++++++++++++
 rust/flying_ninja/backend/Cargo.toml          |  4 +--
 rust/flying_ninja/dfx.json                    | 29 -------------------
 rust/flying_ninja/icp.yaml                    |  2 +-
 7 files changed, 31 insertions(+), 80 deletions(-)
 delete mode 100644 rust/flying_ninja/.devcontainer/devcontainer.json
 delete mode 100644 rust/flying_ninja/BUILD.md
 create mode 100644 rust/flying_ninja/Makefile
 delete mode 100644 rust/flying_ninja/dfx.json

diff --git a/.github/workflows/flying_ninja.yml b/.github/workflows/flying_ninja.yml
index 5148d7084..0d9a77b56 100644
--- a/.github/workflows/flying_ninja.yml
+++ b/.github/workflows/flying_ninja.yml
@@ -16,7 +16,7 @@ concurrency:
 jobs:
   motoko-flying_ninja:
     runs-on: ubuntu-24.04
-    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.1
+    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.2
     env:
       ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
@@ -30,7 +30,7 @@ jobs:
 
   rust-flying_ninja:
     runs-on: ubuntu-24.04
-    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.1
+    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.2
     env:
       ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
diff --git a/rust/flying_ninja/.devcontainer/devcontainer.json b/rust/flying_ninja/.devcontainer/devcontainer.json
deleted file mode 100644
index ebb0b8bcc..000000000
--- a/rust/flying_ninja/.devcontainer/devcontainer.json
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-  "name": "ICP Dev Environment",
-  "image": "ghcr.io/dfinity/icp-dev-env-slim:22",
-  "forwardPorts": [4943, 5173],
-  "portsAttributes": {
-    "4943": {
-      "label": "dfx",
-      "onAutoForward": "ignore"
-    },
-    "5173": {
-      "label": "vite",
-      "onAutoForward": "openBrowser"
-    }
-  },
-  "customizations": {
-    "vscode": {
-      "extensions": ["dfinity-foundation.vscode-motoko"]
-    }
-  }
-}
diff --git a/rust/flying_ninja/BUILD.md b/rust/flying_ninja/BUILD.md
deleted file mode 100644
index ffb6557ec..000000000
--- a/rust/flying_ninja/BUILD.md
+++ /dev/null
@@ -1,26 +0,0 @@
-# Continue building locally
-
-Projects deployed through ICP Ninja are temporary; they will only be live for 30 minutes before they are removed. To continue building locally, follow these steps.
-
-### 1. Install developer tools
-
-Install [Node.js](https://nodejs.org/en/download/) and [icp-cli](https://cli.icp.build):
-
-```bash
-npm install -g @icp-sdk/icp-cli @icp-sdk/ic-wasm
-```
-
-Then navigate into your project's directory that you downloaded from ICP Ninja.
-
-### 2. Deploy locally
-
-Start the local network and deploy the project:
-
-```bash
-icp network start -d
-icp deploy
-```
-
-## Additional examples
-
-Additional code examples and sample applications can be found in the [DFINITY examples repo](https://github.com/dfinity/examples).
diff --git a/rust/flying_ninja/Makefile b/rust/flying_ninja/Makefile
new file mode 100644
index 000000000..c081f1ba3
--- /dev/null
+++ b/rust/flying_ninja/Makefile
@@ -0,0 +1,26 @@
+.PHONY: test
+
+test:
+	@echo "=== Test 1/4: is_high_score returns true when leaderboard is empty ==="
+	@result=$$(icp canister call backend is_high_score '(100 : nat)') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q 'true' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
+
+	@echo "=== Test 2/4: add_leaderboard_entry returns leaderboard with new entry ==="
+	@result=$$(icp canister call backend add_leaderboard_entry '("Alice", 100 : nat)') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q 'Alice' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
+
+	@echo "=== Test 3/4: get_leaderboard returns stored entries ==="
+	@result=$$(icp canister call backend get_leaderboard '()') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q 'Alice' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
+
+	@echo "=== Test 4/4: get_randomness returns a blob ==="
+	@result=$$(icp canister call backend get_randomness '()') && \
+	  echo "$$result" && \
+	  echo "$$result" | grep -q 'blob' && \
+	  echo "PASS" || (echo "FAIL" && exit 1)
diff --git a/rust/flying_ninja/backend/Cargo.toml b/rust/flying_ninja/backend/Cargo.toml
index 268b84c42..22acbdec9 100644
--- a/rust/flying_ninja/backend/Cargo.toml
+++ b/rust/flying_ninja/backend/Cargo.toml
@@ -10,5 +10,5 @@ crate-type = ["cdylib"]
 path = "lib.rs"
 
 [dependencies]
-candid = "0.10.10"
-ic-cdk = "0.16.0"
+candid = "0.10"
+ic-cdk = "0.20"
diff --git a/rust/flying_ninja/dfx.json b/rust/flying_ninja/dfx.json
deleted file mode 100644
index 6ed5a89e5..000000000
--- a/rust/flying_ninja/dfx.json
+++ /dev/null
@@ -1,29 +0,0 @@
-{
-  "canisters": {
-    "backend": {
-      "candid": "backend/backend.did",
-      "type": "custom",
-      "shrink": true,
-      "gzip": true,
-      "wasm": "target/wasm32-unknown-unknown/release/backend.wasm",
-      "build": [
-        "cargo build --target wasm32-unknown-unknown --release -p backend",
-        "candid-extractor target/wasm32-unknown-unknown/release/backend.wasm > backend/backend.did"
-      ],
-      "metadata": [
-        {
-          "name": "candid:service"
-        }
-      ]
-    },
-    "frontend": {
-      "dependencies": ["backend"],
-      "frontend": {
-        "entrypoint": "frontend/index.html"
-      },
-      "source": ["frontend/dist"],
-      "type": "assets"
-    }
-  },
-  "output_env_file": ".env"
-}
diff --git a/rust/flying_ninja/icp.yaml b/rust/flying_ninja/icp.yaml
index da0587413..4d63b8094 100644
--- a/rust/flying_ninja/icp.yaml
+++ b/rust/flying_ninja/icp.yaml
@@ -8,7 +8,7 @@ canisters:
 
   - name: frontend
     recipe:
-      type: "@dfinity/asset-canister@v2.1.0"
+      type: "@dfinity/asset-canister@v2.2.1"
       configuration:
         dir: frontend/dist
         build:

From 274cd8cd04753acdfbd2ce6c9a92691a038c2242 Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Thu, 11 Jun 2026 00:50:59 +0200
Subject: [PATCH 3/7] revert: back to icp-dev-env 0.3.1 (0.3.2 not yet on
 ghcr.io)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .github/workflows/flying_ninja.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/flying_ninja.yml b/.github/workflows/flying_ninja.yml
index 0d9a77b56..5148d7084 100644
--- a/.github/workflows/flying_ninja.yml
+++ b/.github/workflows/flying_ninja.yml
@@ -16,7 +16,7 @@ concurrency:
 jobs:
   motoko-flying_ninja:
     runs-on: ubuntu-24.04
-    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.2
+    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.1
     env:
       ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
@@ -30,7 +30,7 @@ jobs:
 
   rust-flying_ninja:
     runs-on: ubuntu-24.04
-    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.2
+    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.1
     env:
       ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:

From 398030d1a515f47c42aff045c7c49de81bb1b4de Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Thu, 11 Jun 2026 01:21:27 +0200
Subject: [PATCH 4/7] chore: bump icp-dev-env to 0.3.2 (images now published)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .github/workflows/flying_ninja.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/flying_ninja.yml b/.github/workflows/flying_ninja.yml
index 5148d7084..0d9a77b56 100644
--- a/.github/workflows/flying_ninja.yml
+++ b/.github/workflows/flying_ninja.yml
@@ -16,7 +16,7 @@ concurrency:
 jobs:
   motoko-flying_ninja:
     runs-on: ubuntu-24.04
-    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.1
+    container: ghcr.io/dfinity/icp-dev-env-motoko:0.3.2
     env:
       ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
@@ -30,7 +30,7 @@ jobs:
 
   rust-flying_ninja:
     runs-on: ubuntu-24.04
-    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.1
+    container: ghcr.io/dfinity/icp-dev-env-rust:0.3.2
     env:
       ICP_CLI_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:

From 301c592b7af699c6dfb620dc9f4509a7c35e84ec Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Thu, 11 Jun 2026 01:28:55 +0200
Subject: [PATCH 5/7] fix: replace removed ic_cdk::api::management_canister
 with ic_cdk::call for raw_rand

ic_cdk::api::management_canister was removed in ic-cdk 0.17+.
Use ic_cdk::call(Principal::management_canister(), "raw_rand", ()) instead.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 rust/flying_ninja/backend/lib.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/rust/flying_ninja/backend/lib.rs b/rust/flying_ninja/backend/lib.rs
index 6906baaae..6be1b2c82 100644
--- a/rust/flying_ninja/backend/lib.rs
+++ b/rust/flying_ninja/backend/lib.rs
@@ -1,5 +1,4 @@
-use candid::{CandidType, Nat};
-use ic_cdk::api::management_canister;
+use candid::{CandidType, Nat, Principal};
 
 use std::cell::RefCell;
 
@@ -65,7 +64,12 @@ fn add_leaderboard_entry(name: String, score: Nat) -> Leaderboard {
 // Update function to provide secure randomness as the game seed.
 #[ic_cdk::update]
 async fn get_randomness() -> Vec<u8> {
-    management_canister::main::raw_rand().await.unwrap().0
+    let (rand_bytes,): (Vec<u8>,) = ic_cdk::call(
+        Principal::management_canister(),
+        "raw_rand",
+        (),
+    ).await.unwrap();
+    rand_bytes
 }
 
 // Export the interface for the smart contract.

From 9e8557f3d932e175f49aa6f7500760e0120289d7 Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Thu, 11 Jun 2026 01:32:59 +0200
Subject: [PATCH 6/7] fix: use ic_cdk::management_canister::raw_rand() (ic-cdk
 0.20 API)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 rust/flying_ninja/backend/lib.rs | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/rust/flying_ninja/backend/lib.rs b/rust/flying_ninja/backend/lib.rs
index 6be1b2c82..f23418866 100644
--- a/rust/flying_ninja/backend/lib.rs
+++ b/rust/flying_ninja/backend/lib.rs
@@ -1,4 +1,4 @@
-use candid::{CandidType, Nat, Principal};
+use candid::{CandidType, Nat};
 
 use std::cell::RefCell;
 
@@ -64,12 +64,9 @@ fn add_leaderboard_entry(name: String, score: Nat) -> Leaderboard {
 // Update function to provide secure randomness as the game seed.
 #[ic_cdk::update]
 async fn get_randomness() -> Vec<u8> {
-    let (rand_bytes,): (Vec<u8>,) = ic_cdk::call(
-        Principal::management_canister(),
-        "raw_rand",
-        (),
-    ).await.unwrap();
-    rand_bytes
+    ic_cdk::management_canister::raw_rand()
+        .await
+        .expect("raw_rand failed")
 }
 
 // Export the interface for the smart contract.

From 3f6ccd52df0d1c92831d9da0ed23767bedf53d21 Mon Sep 17 00:00:00 2001
From: Marco Walz <marco.walz@dfinity.org>
Date: Thu, 11 Jun 2026 01:40:46 +0200
Subject: [PATCH 7/7] fix: use ic-cdk-management-canister crate for raw_rand
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

ic_cdk::management_canister was removed — the canonical approach is the
dedicated ic-cdk-management-canister = "0.1.1" crate.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 rust/flying_ninja/backend/Cargo.toml | 1 +
 rust/flying_ninja/backend/lib.rs     | 5 ++---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/rust/flying_ninja/backend/Cargo.toml b/rust/flying_ninja/backend/Cargo.toml
index 22acbdec9..6b138ea8c 100644
--- a/rust/flying_ninja/backend/Cargo.toml
+++ b/rust/flying_ninja/backend/Cargo.toml
@@ -12,3 +12,4 @@ path = "lib.rs"
 [dependencies]
 candid = "0.10"
 ic-cdk = "0.20"
+ic-cdk-management-canister = "0.1.1"
diff --git a/rust/flying_ninja/backend/lib.rs b/rust/flying_ninja/backend/lib.rs
index f23418866..3693c65fa 100644
--- a/rust/flying_ninja/backend/lib.rs
+++ b/rust/flying_ninja/backend/lib.rs
@@ -1,4 +1,5 @@
 use candid::{CandidType, Nat};
+use ic_cdk_management_canister::raw_rand;
 
 use std::cell::RefCell;
 
@@ -64,9 +65,7 @@ fn add_leaderboard_entry(name: String, score: Nat) -> Leaderboard {
 // Update function to provide secure randomness as the game seed.
 #[ic_cdk::update]
 async fn get_randomness() -> Vec<u8> {
-    ic_cdk::management_canister::raw_rand()
-        .await
-        .expect("raw_rand failed")
+    raw_rand().await.expect("raw_rand failed")
 }
 
 // Export the interface for the smart contract.