v0.4.0

Effort Profile System with FAANG Default

This release introduces a profile-based effort estimation system calibrated for modern high-performing engineering teams.

Highlights

• FAANG profile (default): Calibrated to 80 LOC/day based on Smacchia's 14-year productivity study

  • COCOMO organic coefficient: a=0.43 (vs 2.4 in 1981)
  • Results in ~5-6x more realistic estimates for modern teams

• For a 122K LOC codebase:

  Metric	1981 COCOMO	FAANG Profile
  Schedule	~25 months	12-14 months
  Team	~15 engineers	5-6 engineers

New Features

• --profile flag for selecting estimation profiles (default: faang)
• Configurable COCOMO coefficients, skill bands, token params via --model-config
• Blended cost calculation based on team composition by size tier
• AI leverage multipliers by skill level (Principal+ engineers modeled with higher leverage)
• Effective capacity display in TUI output

Documentation

• Added docs/engineering-cost-methodology.md with full derivation and research references
• Updated docs/ai-cost-model.md with profiles section

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See CHANGELOG.md for full details.