CUB-200: sync CI workflows with dev branch

- Overwrite dev.yml with dev's consolidated version (parameterized Go/Node versions, cleaner install steps)
- Add deploy-dev.yaml from dev (was missing on this branch)
- build-dev.yaml confirmed absent (was deleted on dev in PR #45)

.gitea/workflows/dev.yml

@@ -7,6 +7,8 @@ on:
     branches: [dev]
 
 env:
+  GO_VERSION: "1.23"
+  NODE_VERSION: "22"
   REGISTRY: code.cubecraftcreations.com
   BACKEND_IMAGE: ${{ gitea.repository }}/backend
   FRONTEND_IMAGE: ${{ gitea.repository }}/frontend
@@ -18,11 +20,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup Go
+      - name: Install Go
         run: |
-          curl -sL https://go.dev/dl/go1.23.6.linux-amd64.tar.gz | tar -C /usr/local -xz
+          curl -fsSL "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" | sudo tar -C /usr/local -xz
           echo "/usr/local/go/bin" >> $GITHUB_PATH
 
+      - name: Install Node.js
+        run: |
+          curl -fsSL "https://nodejs.org/dist/v${NODE_VERSION}/node-v${NODE_VERSION}-linux-x64.tar.xz" | sudo tar -C /usr/local --strip-components=1 -xJ
+          echo "/usr/local/bin" >> $GITHUB_PATH
+
       - name: Run backend tests
         run: go test ./...
         working-directory: ./go-backend
@@ -31,11 +38,6 @@ jobs:
         run: go build -ldflags="-w -s" -o /tmp/server ./cmd/server
         working-directory: ./go-backend
 
-      - name: Setup Node
-        run: |
-          curl -sL https://deb.nodesource.com/setup_22.x | bash -
-          apt-get install -y nodejs
-
       - name: Install frontend deps
         run: npm ci
         working-directory: ./frontend