v0.3.2: Story-level learning

Story/StoryStep models, JourneyEvaluator (4 sub-scores), per-journey PhaseTracker, ApprenticeStoryLearner orchestrator. 2791 tests.

v0.3.1

Changes

• Add CLAUDE.md architecture documentation
• Add .kin metadata for Kindex integration
• Add Constrain artifacts (constraints.yaml, component_map.yaml, trust_policy.yaml, schema_hints.yaml, prompt.md)