CRITICAL: Fix package structure - code not in processbehavior/ directory

[cnicholas]

Problem

The package is currently BROKEN for pip installation. All production code lives in the root directory, but the Python package is processbehavior/ (which is nearly empty).

Current State (Broken)

project-root/
├── analysis_dataset.py     # ❌ 1,273 lines - NOT in package
├── objects.py             # ❌ 214 lines - NOT in package  
├── processbehavior/
│   ├── __init__.py       # ❌ EMPTY - no exports
│   └── datasets/
│       └── __init__.py

Result: Users cannot import anything!

# This won't work:
from processbehavior import analyze  # ModuleNotFoundError!

Target State (Working)

processbehavior/
├── __init__.py           # ✅ Exports public API
├── analysis.py           # ✅ Analysis class
├── specification.py      # ✅ AnalysisSpecification class
├── dataset.py            # ✅ AnalysisDataSet class
├── constants.py          # ✅ Statistical constants
├── limits.py             # ✅ Limit calculation functions
├── utils.py              # ✅ DataFrame utilities
└── datasets/
    └── __init__.py

Tasks

1. Move and Organize Core Modules

• Move analysis_dataset.py → processbehavior/
• Split into focused modules:
  • processbehavior/analysis.py - Analysis class
  • processbehavior/specification.py - AnalysisSpecification class
  • processbehavior/dataset.py - AnalysisDataSet class

2. Split objects.py Into Focused Modules

• processbehavior/constants.py - Statistical constants (~30 lines)
• processbehavior/limits.py - Control limit functions (~100 lines)
• processbehavior/utils.py - DataFrame utilities (~50 lines)

3. Remove Legacy/Unused Code

• Delete GoogleChart class from objects.py (appears unused)
• Delete new_analysis_class.py (temporary file from refactoring)
• Remove or relocate global constants (RSG_VARIABLE_NAME, etc.)

4. Set Up Package Exports

• Create processbehavior/__init__.py with public API

5. Update All Imports

• Fix imports in tests
• Update cross-module imports

6. Verification

• All 27 tests still pass
• Can successfully import processbehavior
• Build and install locally works

Impact

Without this fix: ❌ Package cannot be published to PyPI
With this fix: ✅ Ready for distribution

Priority

🔴 CRITICAL - Blocking deployment

Estimated Effort

~45-60 minutes