feat: Add CI workflow for running tests and update database URL handling

.gitea/workflows/test.yml

@@ -18,7 +18,18 @@ jobs:
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-
+            ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+      - name: Cache pip test dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-test-${{ hashFiles('requirements-test.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-test-
+            ${{ runner.os }}-pip-test-${{ hashFiles('requirements-test.txt') }}
       - name: Install dependencies
-        run: pip install -r requirements.txt
+        run: |
+          pip install -r requirements.txt
+          pip install -r requirements-test.txt
       - name: Run tests
         run: pytest