feat: Add Turborepo cache to all jobs for faster execution

Added Turborepo cache to build, test, and typecheck jobs to speed up
task execution while still using artifacts for reliable build output
transfer between jobs.

Author: amikofalvy

.github/workflows/test-optimized-v2.yml

@@ -49,6 +49,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pnpm-store-
       
+      - name: Setup Turborepo cache
+        uses: actions/cache@v4
+        with:
+          path: .turbo
+          key: ${{ runner.os }}-turbo-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-turbo-
+      
       - name: Install dependencies
         run: |
           pnpm install --frozen-lockfile
@@ -115,6 +123,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pnpm-store-
       
+      - name: Setup Turborepo cache
+        uses: actions/cache@v4
+        with:
+          path: .turbo
+          key: ${{ runner.os }}-turbo-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-turbo-
+      
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
@@ -176,6 +192,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pnpm-store-
       
+      - name: Setup Turborepo cache
+        uses: actions/cache@v4
+        with:
+          path: .turbo
+          key: ${{ runner.os }}-turbo-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-turbo-
+      
       - name: Install dependencies
         run: pnpm install --frozen-lockfile