Stop tracking gitignored files and remove them from remote

Remove .claude/, .github/workflows/, data/, and notebooks/ from git
tracking so they no longer appear in the remote repository.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/settings.local.json

@@ -1,8 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(Get-ChildItem -Recurse -Depth 2)",
-      "Bash(Select-Object FullName)"
-    ]
-  }
-}

.github/workflows/tests.yml

@@ -1,38 +0,0 @@
-name: Run tests
-
-on: [push]
-
-jobs:
-
-  test:
-
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ["3.12"]
-    env:
-      PIP_ROOT_USER_ACTION: ignore
-      UV_LINK_MODE: copy
-
-    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 dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install uv
-        uv sync --locked
-
-    - name: Check format with ruff
-      run: |
-        uv run ruff format --check
-
-    - name: Check code linting with ruff
-      run: |
-        uv run ruff check

.gitignore

@@ -15,4 +15,7 @@ data/**
 
 # User-specific config (copy from *.example.* files)
 config/config.yaml
-config/clips.txt
+config/clips.txt
+
+# Notebooks
+notebooks/