Refactor into modular structure with improvements

- Split monolithic intercept.py (15k lines) into modular structure:
  - routes/ - Flask blueprints for each feature
  - templates/ - Jinja2 HTML templates
  - data/ - OUI database, satellite TLEs, detection patterns
  - utils/ - dependencies, process management, logging
  - config.py - centralized configuration with env var support

- Add type hints to function signatures
- Replace bare except clauses with specific exceptions
- Add proper logging module (replaces print statements)
- Add environment variable support (INTERCEPT_* prefix)
- Add test suite with pytest
- Add Dockerfile for containerized deployment
- Add pyproject.toml with ruff/black/mypy config
- Add requirements-dev.txt for development dependencies

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pyproject.toml

@@ -0,0 +1,118 @@
+[project]
+name = "intercept"
+version = "1.0.0"
+description = "Signal Intelligence Platform - Pager/433MHz/ADS-B/Satellite/WiFi/Bluetooth"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+authors = [
+    {name = "Intercept Contributors"}
+]
+keywords = ["sdr", "rtl-sdr", "signals", "pager", "adsb", "wifi", "bluetooth"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Environment :: Web Environment",
+    "Framework :: Flask",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: POSIX :: Linux",
+    "Operating System :: MacOS",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Communications",
+    "Topic :: System :: Networking :: Monitoring",
+]
+dependencies = [
+    "flask>=2.0.0",
+    "skyfield>=1.45",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+    "pytest-cov>=4.0.0",
+    "ruff>=0.1.0",
+    "black>=23.0.0",
+    "mypy>=1.0.0",
+    "types-flask>=1.1.0",
+]
+
+[project.scripts]
+intercept = "intercept:main"
+
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools.packages.find]
+include = ["routes*", "utils*", "data*"]
+
+[tool.ruff]
+target-version = "py39"
+line-length = 120
+
+[tool.ruff.lint]
+select = [
+    "E",      # pycodestyle errors
+    "W",      # pycodestyle warnings
+    "F",      # Pyflakes
+    "I",      # isort
+    "B",      # flake8-bugbear
+    "C4",     # flake8-comprehensions
+    "UP",     # pyupgrade
+    "SIM",    # flake8-simplify
+]
+ignore = [
+    "E501",   # line too long (handled by formatter)
+    "B008",   # do not perform function calls in argument defaults
+    "B905",   # zip without explicit strict
+    "SIM108", # use ternary operator instead of if-else
+]
+
+[tool.ruff.lint.isort]
+known-first-party = ["app", "config", "routes", "utils", "data"]
+
+[tool.black]
+line-length = 120
+target-version = ["py39", "py310", "py311", "py312"]
+include = '\.pyi?$'
+exclude = '''
+/(
+    \.git
+    | \.mypy_cache
+    | \.pytest_cache
+    | \.venv
+    | venv
+    | __pycache__
+)/
+'''
+
+[tool.mypy]
+python_version = "3.9"
+warn_return_any = true
+warn_unused_configs = true
+ignore_missing_imports = true
+exclude = [
+    "tests/",
+    "venv/",
+]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_functions = ["test_*"]
+addopts = "-v --tb=short"
+
+[tool.coverage.run]
+source = ["app", "routes", "utils", "data"]
+omit = ["tests/*", "*/__pycache__/*"]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "if __name__ == .__main__.:",
+    "raise NotImplementedError",
+]