Fix npm optional dependencies not installed from cache in CI (#25)

Author: Copilot

.github/workflows/build-server.yml

@@ -38,7 +38,7 @@ jobs:
           node-version-file: '.node-version'
 
       - name: Build Server - Install dependencies
-        run: npm ci
+        run: npm ci --include=optional
         working-directory: .
 
       - name: Build Server - Clean previous build

.github/workflows/copilot-setup-steps.yml

@@ -51,7 +51,7 @@ jobs:
           node-version-file: '.node-version'
 
       - name: Copilot Setup - Install dependencies
-        run: npm ci
+        run: npm ci --include=optional
 
       - name: Copilot Setup - Setup CodeQL environment
         uses: ./.github/actions/setup-codeql-environment

.github/workflows/release.yml

@@ -86,7 +86,7 @@ jobs:
           fi
 
       - name: Release - Install dependencies
-        run: npm ci
+        run: npm ci --include=optional
 
       - name: Release - Build server
         run: npm run build -w server
@@ -152,7 +152,7 @@ jobs:
 
       - name: Release - Install production dependencies
         working-directory: dist-package/server
-        run: npm ci --omit=dev
+        run: npm ci --omit=dev --include=optional
 
       - name: Release - Create archive
         run: |