Align Axint 0.4.28 public truth

[nimatime]

Summary

• Align extension and marketplace metadata with Axint v0.4.28
• Move tool-contract reports and tests into main so the 1319-test public truth is source-backed
• Update fallback compiler versions and public counters to 36 MCP tools + 5 prompts

Validation

• npm run versions:check
• npm run metrics:check
• npm run docs:check
• npm run typecheck
• npm run build
• npm test