merge: integrate testing branch into main (unrelated histories)

All conflicts resolved in favour of testing — testing contains the
complete TextTools v0.2.0 implementation. main previously held only
3 initial setup commits from a separate bootstrap.

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

Author: chrisdpurcell

.github/workflows/ci.yml

@@ -2,55 +2,56 @@ name: CI
 
 on:
   push:
-    branches: [ main, develop ]
+    branches: [ main, testing ]
   pull_request:
-    branches: [ main, develop ]
+    branches: [ main ]
 
 jobs:
   test:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Python 3.14
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: '3.14'
 
+    - name: Install uv
+      run: pip install uv
+
     - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements.txt
+      run: uv pip install --system -r requirements.txt
 
     - name: Run tests
-      run: |
-        pytest tests/ -v --cov=src --cov-report=xml
+      run: pytest tests/ -v --cov=src --cov-report=xml
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         file: ./coverage.xml
         flags: unittests
-        name: codecov-umbrella
         fail_ci_if_error: false
 
   lint:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
-    - name: Set up Python
-      uses: actions/setup-python@v4
+    - name: Set up Python 3.14
+      uses: actions/setup-python@v5
       with:
         python-version: '3.14'
 
+    - name: Install uv
+      run: pip install uv
+
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
-        pip install black isort mypy pylint
-        pip install -r requirements.txt
+        uv pip install --system black isort mypy
+        uv pip install --system -r requirements.txt
 
     - name: Check formatting with black
       run: black --check src/ tests/
@@ -60,8 +61,3 @@ jobs:
 
     - name: Type check with mypy
       run: mypy src/
-      continue-on-error: true
-
-    - name: Lint with pylint
-      run: pylint src/
-      continue-on-error: true

.gitignore

@@ -205,3 +205,13 @@ cython_debug/
 marimo/_static/
 marimo/_lsp/
 __marimo__/
+
+# Claude Code / AI tool configs — may contain API keys
+.mcp.json
+.mcp.json.*
+.codex/
+
+# Internal tool configs — not for public consumption
+.contextstream/
+setup-branch-protection.sh
+.github/agents/