feat(01-01): config system, Fernet crypto, setup wizard

.github/workflows/pylint.yml

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+name: Pylint
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.12"]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pylint
+        pip install -e .
+    - name: Analysing the code with pylint
+      run: |
+        pylint $(git ls-files '*.py' | grep -v '^alembic/')

.gitignore

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+# Planning artifacts (local only)
+.planning/
+
+# Python
+__pycache__/
+*.py[cod]
+.venv/
+
+# Claude
+.claude/