[codex] Fix CLI imports for non-editable installs

[justinjoy]

Summary

Fixes the normal pip install CLI failure where factlog.cli imported modules from the repository-level tools/ directory that is not included in installed package output.

Changes

• Move CLI runtime modules into the installable factlog/ package: config, common, literal_types, and compile_facts.
• Update factlog.cli to import package modules and recompile accepted facts via python -m factlog.compile_facts.
• Keep existing tools/*.py direct import/execution paths working through compatibility wrappers.
• Add a non-editable pip install regression test that runs both python -m factlog doctor and the factlog doctor console script outside the source tree.

Root Cause

Editable installs kept the source-tree tools/ directory importable, masking that regular installs only package factlog/. As a result, installed CLI startup failed before reaching command logic with ModuleNotFoundError: No module named 'factlog_config'.\n\n## Validation\n\n- bash tests/test_pip_install_cli.sh\n- bash tests/test_active_kb_config.sh\n- bash tests/test_amend.sh\n- bash tests/test_review.sh\n- bash tests/test_eject_cmd.sh\n- FACTLOG_ROOT=examples/sample-kb bash tests/golden.sh\n- python3 -m compileall -q factlog tools\n\nCloses #143