chore: speed up CI with caching, batch wasm builds, and dedup tests

- Add GitHub Actions caching for Rust target/, cargo registry, and
  PocketIC binary (shared-build.yml)
- Batch-build all Rust canister wasm targets in a single cargo
  invocation instead of per-canister icp deploy (build-all-wasm.sh)
- Use icp canister create + install --wasm with prebuilt wasms instead
  of icp deploy for Rust canisters (validate-and-test-all.sh)
- Remove duplicate Rust tests: cargo test --workspace already runs in
  rust-lint-format.sh, so remove individual cargo test -p from
  run-test.sh
- Remove redundant cargo check from rust-lint-format.sh (clippy is a
  superset)
- Add --skip-build flag to setup-dashboard-dev-env.sh for CI use

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Web3NL

.github/workflows/shared-build.yml

@@ -21,6 +21,31 @@ jobs:
           node-version: '22'
           cache: 'npm'
 
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: '1.88.0'
+          targets: wasm32-unknown-unknown
+          components: rustfmt, clippy
+
+      - name: Cache Rust artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: rust-${{ runner.os }}-${{ hashFiles('rust-toolchain.toml') }}-${{ hashFiles('Cargo.lock') }}
+          restore-keys: |
+            rust-${{ runner.os }}-${{ hashFiles('rust-toolchain.toml') }}-
+
+      - name: Cache PocketIC binary
+        uses: actions/cache@v4
+        with:
+          path: ~/.local/share/icp-cli/pkg/
+          key: pocket-ic-${{ runner.os }}-v1
+
       - name: Install icp-cli
         run: npm install -g @icp-sdk/icp-cli @icp-sdk/ic-wasm
 

scripts/build-all-wasm.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+set -euo pipefail
+
+# Batch-build all Rust canister wasm targets in a single cargo invocation,
+# then shrink and compress each for deployment.
+#
+# Prerequisites: all frontend assets that get embedded in Rust canisters
+# must be built before running this script.
+
+echo "Building all Rust canister wasms..."
+cargo build --target wasm32-unknown-unknown --release \
+  -p wasm-registry \
+  -p my-hello-world \
+  -p my-notepad
+
+WASM_DIR="target/wasm32-unknown-unknown/release/deps"
+OUT_DIR="wasm"
+mkdir -p "$OUT_DIR"
+
+# Process each wasm: cargo output name (underscore) → output name (hyphenated)
+shrink_and_compress() {
+  local cargo_name="$1"
+  local output_name="$2"
+  echo "Shrinking and compressing ${output_name}..."
+  local tmpdir
+  tmpdir=$(mktemp -d)
+  ic-wasm "${WASM_DIR}/${cargo_name}.wasm" -o "${tmpdir}/${output_name}.wasm" shrink
+  gzip -9 "${tmpdir}/${output_name}.wasm"
+  cp "${tmpdir}/${output_name}.wasm.gz" "${OUT_DIR}/${output_name}.wasm.gz"
+  rm -rf "$tmpdir"
+}
+
+shrink_and_compress "wasm_registry" "wasm-registry"
+shrink_and_compress "my_hello_world" "my-hello-world"
+shrink_and_compress "my_notepad" "my-notepad"
+
+echo "All wasms built and compressed in ${OUT_DIR}/"

scripts/run-test.sh

@@ -13,12 +13,6 @@ npm run test --workspace=canister-dashboard-frontend
 echo "Unit testing my-canister-app"
 npm run test --workspace=my-canister-app
 
-echo "Unit testing my-canister-dashboard (Rust)"
-cargo test -p my-canister-dashboard
-
-echo "Unit testing my-canister-frontend (Rust)"
-cargo test -p my-canister-frontend
-
 echo "Acceptance testing my-hello-world"
 cargo run -p canister-dapp-test -- wasm/my-hello-world.wasm.gz
 

scripts/rust-lint-format.sh

@@ -4,5 +4,4 @@ set -euo pipefail
 # Main workspace
 cargo fmt
 cargo clippy --all-targets --all-features -- -D warnings
-cargo check --all-targets --all-features
 cargo test --workspace --exclude canister-dapp-test

scripts/setup-dashboard-dev-env.sh

@@ -7,15 +7,24 @@ source "$(dirname "$0")/constants.sh"
 # Ensure we're in the project root directory
 cd "$REPO_ROOT"
 
+SKIP_BUILD=""
+for arg in "$@"; do
+  case $arg in
+    --skip-build) SKIP_BUILD="true" ;;
+  esac
+done
+
 echo "Setting up dashboard development environment..."
 
-echo "Deploying $HELLO_WORLD_CANISTER canister..."
-./scripts/prebuild-mcd.sh
-# Build hello-world frontend with test env vars (identity provider URL)
-# before the Rust canister embeds it via include_dir!
-npm run build --workspace=my-hello-world-frontend
-icp deploy "$HELLO_WORLD_CANISTER" -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
-./scripts/copy-example-wasm.sh
+if [ "$SKIP_BUILD" != "true" ]; then
+  echo "Deploying $HELLO_WORLD_CANISTER canister..."
+  ./scripts/prebuild-mcd.sh
+  # Build hello-world frontend with test env vars (identity provider URL)
+  # before the Rust canister embeds it via include_dir!
+  npm run build --workspace=my-hello-world-frontend
+  icp deploy "$HELLO_WORLD_CANISTER" -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
+  ./scripts/copy-example-wasm.sh
+fi
 
 # Update test.env with the hello-world canister ID
 HELLO_WORLD_ID=$(icp canister status my-hello-world -e local --id-only)
@@ -50,4 +59,4 @@ icp canister settings update "$HELLO_WORLD_CANISTER" -e local --identity ident-1
 echo "Setting authorized Internet Identity principal (Vite origin for first e2e batch)..."
 icp canister call "$HELLO_WORLD_CANISTER" manage_ii_principal "(variant { Set = principal \"$PRINCIPAL_VITE\" })" -e local --identity ident-1
 
-echo "✓ Dashboard development environment setup complete"
+echo "Dashboard development environment setup complete"

validate-and-test-all.sh

@@ -22,7 +22,6 @@ for arg in "$@"; do
         --clean) CLEAN_FLAG="true" ;;
         --skip-checks) SKIP_CHECKS_FLAG="true" ;;
         --skip-bootstrap) SKIP_BOOTSTRAP_FLAG="true" ;;
-
         --skip-e2e) SKIP_E2E_FLAG="true" ;;
     esac
 done
@@ -66,11 +65,28 @@ set -a
 source tests/test.env
 set +a
 
-echo "Setting up dashboard dev environment..."
-./scripts/setup-dashboard-dev-env.sh
+# --- Phase 1: Build all frontend assets for Rust canister embedding ---
+echo "Building frontend assets..."
+./scripts/prebuild-mcd.sh
+npm run build --workspace=my-hello-world-frontend
+npm run build --workspace=my-notepad-frontend
+
+# --- Phase 2: Batch-build all Rust canister wasms ---
+echo "Batch-building all canister wasms..."
+./scripts/build-all-wasm.sh
 
+# --- Phase 3: Deploy canisters using prebuilt wasms ---
 echo "Deploying wasm-registry canister..."
-icp deploy wasm-registry -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
+icp canister create wasm-registry -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
+icp canister install wasm-registry --wasm wasm/wasm-registry.wasm.gz -e local --identity ident-1
+
+echo "Deploying my-hello-world canister..."
+icp canister create my-hello-world -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
+icp canister install my-hello-world --wasm wasm/my-hello-world.wasm.gz -e local --identity ident-1
+
+# --- Phase 4: Dashboard setup (II principals, controllers) ---
+echo "Setting up dashboard dev environment..."
+./scripts/setup-dashboard-dev-env.sh --skip-build
 
 echo "Uploading my-hello-world WASM to registry..."
 ./scripts/upload-wasm-to-registry.sh \
@@ -81,17 +97,8 @@ echo "Uploading my-hello-world WASM to registry..."
   -e local --identity ident-1
 
 echo "Deploying my-notepad canister..."
-npm run build --workspace=my-notepad-frontend
-icp deploy my-notepad -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
-
-echo "Copying my-notepad WASM to registry..."
-NOTEPAD_WASM="target/wasm32-unknown-unknown/release/deps/my_notepad.wasm"
-NOTEPAD_TMPDIR=$(mktemp -d)
-ic-wasm "$NOTEPAD_WASM" -o "$NOTEPAD_TMPDIR/my-notepad.wasm" shrink
-gzip -9 "$NOTEPAD_TMPDIR/my-notepad.wasm"
-mkdir -p wasm
-cp "$NOTEPAD_TMPDIR/my-notepad.wasm.gz" wasm/my-notepad.wasm.gz
-rm -rf "$NOTEPAD_TMPDIR"
+icp canister create my-notepad -e local --identity ident-1 --cycles "$CANISTER_INITIAL_CYCLES"
+icp canister install my-notepad --wasm wasm/my-notepad.wasm.gz -e local --identity ident-1
 
 echo "Uploading my-notepad WASM to registry..."
 ./scripts/upload-wasm-to-registry.sh \