Fix hanging test and establish comprehensive development environment

- Fix infinite retry loop in ai_responder.py that caused test_fix1 to hang
- Add missing picture_edit parameter to all AIResponse constructor calls
- Set up complete development toolchain with Black, isort, Bandit, and MyPy
- Create comprehensive Makefile for development workflows
- Add pre-commit hooks with formatting, linting, security, and type checking
- Update test mocking to provide contextual responses for different scenarios
- Configure all tools for 140 character line length and strict type checking
- Add DEVELOPMENT.md with setup instructions and workflow documentation

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.flake8

@@ -1,6 +1,18 @@
 [flake8]
-exclude = .git,__pycache__,.venv
-per-file-ignores = __init__.py:F401, tests/test_ai.py:E501
 max-line-length = 140
 max-complexity = 10
-select = B,C,E,F,W,T4,B9
+ignore =
+    E203,
+    E266,
+    E501,
+    W503,
+    E306,
+exclude =
+    .git,
+    .mypy_cache,
+    .pytest_cache,
+    __pycache__,
+    build,
+    dist,
+    venv,
+per-file-ignores = __init__.py:F401