ci(integration): install the package with [dev] extra, not just dev tools

CI was running `pip install -r requirements-dev.txt`, which installs the
dev tooling but NOT the package itself and NOT its runtime dependencies.
The top-level `conftest.py` then crashed at `pytest_configure` time with

  ModuleNotFoundError: No module named 'twisted'

because `twisted` only arrives transitively via `roslibpy` (a runtime
dependency of compas_fab, pulled in by installing the package).

`pyproject.toml` already wires both lists up:

  [tool.setuptools.dynamic]
  dependencies = { file = "requirements.txt" }
  optional-dependencies = { dev = { file = "requirements-dev.txt" } }

so `pip install -e ".[dev]"` covers everything in one call.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: gonzalocasas

.github/workflows/integration.yml

@@ -29,9 +29,14 @@ jobs:
           docker ps -a
 
       - name: Install dependencies
+        # `pip install -r requirements-dev.txt` alone installs the dev tools
+        # but NOT the package itself nor its runtime deps. The top-level
+        # `conftest.py` then crashes on `from twisted.internet import ...`
+        # because twisted only arrives transitively via `roslibpy` (a runtime
+        # dep). Installing the package with the `[dev]` extra pulls both.
         run: |
           python -m pip install --upgrade pip wheel
-          python -m pip install --no-cache-dir -r requirements-dev.txt
+          python -m pip install --no-cache-dir -e ".[dev]"
 
       - name: Run tests + doctests
         # `COMPAS_FAB_RUN_ROS_INTEGRATION_TESTS=1` opts the `ros1_client` /