Massu v0.3.0

Added

• Tier enforcement — Free (14 tools), Pro (63+), Team, Enterprise tiers with license gating
• License validation — license.ts module with getCurrentTier(), getToolTier(), isToolAllowed(), and annotateToolDefinitions()
• massu_license_status tool — Check current tier, available tools, and upgrade path from any session
• Conventions config — conventions section in massu.config.yaml for project-specific coding rules
• Generalization scanner — scripts/massu-generalization-scanner.sh verifies no hardcoded project-specific data in shipped files

Changed

• Tool descriptions now include tier labels (e.g., "[Pro]") when not on the free tier
• README and CLAUDE.public.md updated with tier information and tool counts
• Package description updated to mention tiered tooling