Add uv.lock for reproducible builds and optimize CI with --frozen flag

Author: HaukurPall

.github/workflows/test.yml

@@ -24,6 +24,15 @@ jobs:
       - name: Install uv
         uses: astral-sh/setup-uv@v3
 
+      - name: Cache uv dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/uv
+          key: ${{ runner.os }}-uv-${{ matrix.python-version }}-${{ hashFiles('**/pyproject.toml', '**/uv.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-uv-${{ matrix.python-version }}-
+            ${{ runner.os }}-uv-
+
       - name: Cache Hugging Face models
         uses: actions/cache@v4
         with:
@@ -34,7 +43,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          uv sync --extra dev
+          uv sync --extra dev --frozen
 
       - name: Run tests
         run: |
@@ -56,9 +65,18 @@ jobs:
       - name: Install uv
         uses: astral-sh/setup-uv@v3
 
+      - name: Cache uv dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/uv
+          key: ${{ runner.os }}-uv-lint-${{ hashFiles('**/pyproject.toml', '**/uv.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-uv-lint-
+            ${{ runner.os }}-uv-
+
       - name: Install dependencies
         run: |
-          uv sync --extra dev
+          uv sync --extra dev --frozen
 
       - name: Check code ruff
         run: |