fix: invalid Textual CSS color in studio TUI

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    name: Test (Python ${{ matrix.python-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "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: Install Poetry
+        run: pip install poetry
+
+      - name: Install dependencies
+        run: poetry install --no-interaction
+
+      - name: Lint with ruff
+        run: poetry run ruff check .
+
+      - name: Format check with black
+        run: poetry run black --check .
+
+      - name: Run tests
+        run: poetry run pytest --cov=devha --cov-report=xml --cov-report=term-missing
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v4
+        if: matrix.python-version == '3.12'
+        with:
+          file: ./coverage.xml
+          fail_ci_if_error: false
+
+  docker:
+    name: Docker build
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build Docker image
+        run: docker build -t devha:test .
+
+      - name: Smoke test Docker image
+        run: docker run --rm devha:test cipher encode "hello" --type rot13 --no-banner

.gitignore

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+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+.Python
+*.egg
+*.egg-info/
+dist/
+build/
+.eggs/
+*.so
+.env
+.venv
+venv/
+env/
+.coverage
+.coverage.*
+coverage.xml
+htmlcov/
+.pytest_cache/
+.ruff_cache/
+.mypy_cache/
+poetry.lock
+*.log
+.DS_Store

Dockerfile

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+FROM python:3.12-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    iputils-ping \
+    wireless-tools \
+    iw \
+    net-tools \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY pyproject.toml poetry.lock* ./
+
+RUN pip install --no-cache-dir poetry \
+    && poetry config virtualenvs.create false \
+    && poetry install --only main --no-interaction --no-ansi
+
+COPY . .
+
+ENTRYPOINT ["devha"]
+CMD ["--help"]

LICENSE

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+MIT License
+
+Copyright (c) 2024 devha contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.