Add CI and fix setuptools requirement for editable installs

- Add GitHub Actions CI testing install on Ubuntu 22.04/24.04 with Python 3.8/3.10/3.12
- Bump setuptools minimum from >=61.0 to >=64.0 (PEP 660 editable install support)
- Add upgrade step in install instructions and troubleshooting section in README

Author: justyx404

.github/workflows/ci.yml

@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  install:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-22.04, ubuntu-24.04]
+        python-version: ["3.8", "3.10", "3.12"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Upgrade pip and setuptools
+        run: pip install --upgrade pip setuptools wheel
+
+      - name: Install package (editable)
+        run: pip install -e .
+
+      - name: Verify import
+        run: python -c "from sensx import SensX; print('import OK')"
+
+      - name: Install package (non-editable)
+        run: |
+          pip uninstall -y sensx
+          pip install .
+
+      - name: Verify import (non-editable)
+        run: python -c "from sensx import SensX; print('import OK')"

README.md

@@ -6,6 +6,7 @@ Python driver for TouchTronix tactile sensors.
 
 ```bash
 cd sensx_python
+pip install --upgrade pip setuptools wheel
 pip install -e .
 ```
 
@@ -89,3 +90,36 @@ with SensX(port="/dev/ttyUSB0") as sensor:
 | `latest_frame`        | Thread-safe copy of the most recent frame        |
 | `latest_timestamp`    | `time.perf_counter()` of the most recent frame   |
 | `on_frame`            | Callback: `fn(frame: np.ndarray, ts: float)`     |
+
+## Troubleshooting
+
+### `build_editable` error on `pip install -e .`
+
+```
+ERROR: Project ... has a 'pyproject.toml' and its build backend is missing the 'build_editable' hook.
+```
+
+Your `setuptools` is too old. Editable installs require **setuptools >= 64.0** (PEP 660). Fix:
+
+```bash
+pip install --upgrade pip setuptools wheel
+pip install -e .
+```
+
+If you still can't use editable mode, a regular install also works:
+
+```bash
+pip install .
+```
+
+### `ModuleNotFoundError: No module named 'sensx'`
+
+The install step above likely failed. Check the install output and retry.
+
+### `command 'python' not found`
+
+On Ubuntu 22.04+, use `python3` instead of `python`, or install the compatibility package:
+
+```bash
+sudo apt install python-is-python3
+```

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.0", "wheel"]
+requires = ["setuptools>=64.0", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]