fix(actions): copy env template as env for ci

Author: ahsentekd

.env.template

@@ -1 +1 @@
-GEMINI_API_KEY=
+GEMINI_API_KEY=foo

.github/workflows/ci.yaml

@@ -28,6 +28,10 @@ jobs:
       run: |
         uv sync
 
+    - name: Set up test environment
+      run: |
+        cp env.template .env
+
     - name: Run linting
       run: |
         uv run ruff check ./levelup/

docs/contributing.md

@@ -37,7 +37,7 @@ Thank you for your interest in contributing to LevelUP! We welcome contributions
 3. **Create a Development Environment**
 
    ```bash
-   cp .env.example .env
+   cp .env.template .env
    # Edit .env with your API keys
    ```