Dependency version floors: - next: ^15.0.0 → ^15.5.15 across all 19 showcase packages (CVE-2025-29927) - express: ^4.21.0 → ^4.21.2 in claude-sdk-typescript (open redirect fix) - hono: ^4.0.0 → ^4.6.0 in shell (path traversal fix) Docker base image pins: - node:20-slim → node:20.19-slim (18 Dockerfiles) - python:3.12-slim → python:3.12.11-slim (12 Dockerfiles) - aimock:latest → aimock:1.13.0 (1 Dockerfile) Part of CPK-7320
The showcase framework directories better reflect their role as integration examples rather than distributable packages. Renames showcase/packages/ -> showcase/integrations/ and updates the test docker-compose file reference accordingly.