v0.1.18 - Build System Migration and Provider Adapter

Added

• GitHub Automation Tooling
  • PyPI release agent (.github/agents/pypi-release.agent.md) for automated package publishing
  • CLI workflow testing agent (.github/agents/test-cli-workflows.agent.md) for validation
  • Upstream tarball agent (.github/agents/upstream-tarball.agent.md) for dependency tracking
  • Reset dev environment prompt (.github/prompts/reset-dev-environment.prompt.md)
  • Corresponding prompt files for agent invocation

Changed

• Build System Migration
  • Switched build backend from uv_build to hatchling for improved compatibility
  • Updated pyproject.toml with hatchling configuration
  • Package builds now use standard hatchling wheel builder
• Unified Provider Interface
  • Refactored Bloomberg provider with adapter pattern in _get_provider_fetch_function()
  • Added _bloomberg_adapter to normalize Bloomberg provider to unified signature
  • Removed source parameter filtering from fetch_from_bloomberg() and fetch_current_from_bloomberg()
  • Restored unified fetch_fn() calls in fetch_cdx, fetch_vix, fetch_etf
  • Adapter pattern isolates provider-specific parameter handling in factory function
• Environment Cache Cleanup Script
  • Renamed scripts/clean_pycache.py → scripts/clean_env_cache.py
  • Added support for .pytest_cache, .mypy_cache, .ruff_cache cleanup
  • Virtual environments (.venv, venv, .env, env) now excluded from cleaning
  • Updated function name: clean_pycache() → clean_env_cache()
  • Updated all documentation references

Fixed

• Dependency Resolution
  • Added ipython as explicit dependency to resolve quantstats import failures
  • quantstats has undeclared dependency on ipython (required by quantstats.reports module)
  • While only quantstats.stats is used, Python's import system loads entire package

Test Coverage

• Updated test to check for adapter instead of identity comparison in provider tests
• All 721 tests passing (1 skipped)