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>

pyproject.toml

@@ -4,6 +4,28 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.mypy]
 files = ["fjerkroa_bot", "tests"]
+python_version = "3.8"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = true
+disallow_incomplete_defs = true
+check_untyped_defs = true
+disallow_untyped_decorators = true
+no_implicit_optional = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+warn_no_return = true
+warn_unreachable = true
+strict_equality = true
+show_error_codes = true
+
+[[tool.mypy.overrides]]
+module = [
+    "discord.*",
+    "multiline.*",
+    "aiohttp.*"
+]
+ignore_missing_imports = true
 
 [tool.flake8]
 max-line-length = 140
@@ -44,3 +66,72 @@ setuptools = "*"
 wheel = "*"
 watchdog = "*"
 tomlkit = "*"
+multiline = "*"
+
+[tool.black]
+line-length = 140
+target-version = ['py38']
+include = '\.pyi?$'
+extend-exclude = '''
+/(
+  # directories
+  \.eggs
+  | \.git
+  | \.hg
+  | \.mypy_cache
+  | \.tox
+  | \.venv
+  | _build
+  | buck-out
+  | build
+  | dist
+)/
+'''
+
+[tool.isort]
+profile = "black"
+line_length = 140
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+ensure_newline_before_comments = true
+known_first_party = ["fjerkroa_bot"]
+
+[tool.bandit]
+exclude_dirs = ["tests", ".venv", "venv"]
+skips = ["B101", "B601", "B301", "B311", "B403", "B113"]  # Skip pickle, random, and request timeout warnings for this application
+
+[tool.pytest.ini_options]
+minversion = "6.0"
+addopts = "-ra -q --strict-markers --strict-config"
+testpaths = ["tests"]
+python_files = ["test_*.py", "*_test.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+markers = [
+    "slow: marks tests as slow (deselect with '-m \"not slow\"')",
+    "integration: marks tests as integration tests",
+]
+
+[tool.coverage.run]
+source = ["fjerkroa_bot"]
+omit = [
+    "*/tests/*",
+    "*/test_*",
+    "setup.py",
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "if self.debug:",
+    "if settings.DEBUG",
+    "raise AssertionError",
+    "raise NotImplementedError",
+    "if 0:",
+    "if __name__ == .__main__.:",
+    "class .*\bProtocol\\):",
+    "@(abc\\.)?abstractmethod",
+]