chore(release): prepare v1.1.5

[OneStepAt4time]

Summary

• prepare release version 1.1.5
• align runtime server version metadata with package release version
• update changelog for 1.1.5 release notes
• include UAT reliability and reporting improvements from recent fixes

Validation

• npm run build
• npm run lint
• npm run typecheck
• npm run test:ci
• npx vitest run tests/integration/
• npx tsx scripts/run-uat.ts

QA Certification

• Gate 1 Build Integrity: PASS
• Gate 2 Static Analysis: PASS
• Gate 3 Full Test Suite: PASS (308/308)
• Gate 4 Coverage: PASS (90.16/84.24/86.13/90.16)
• Gate 5 Dependency Audit: PASS with warnings (0 high/critical, 2 moderate)
• Gate 6 Source Review: PASS with warnings (expected console usage)
• Gate 7 Git Hygiene: PASS
• Gate 8 Release Readiness: PASS
• Gate 9 Integration Tests: PASS (59/59)
• Gate 10 MCP Smoke & UAT: PASS (12/12)

Release Notes

• local tag created and pushed: v1.1.5