crucible 0.1.0

First release — a complete, differential-verified Python port of the SpecForge validator.

All four output layers match the reference engine byte-for-byte:

• structural — schema checks (presence, format, duplicate-order, entity counts)
• scoring — 53-entry rubric, tier weights, topology penalties, cascade floors
• cross-validation — 13 consistency checks
• guidance — composite-pattern prose suggestions

Deterministic, no-LLM. pip install crucible-forge → import crucible.

Requires Python ≥ 3.11.