Surfaces the multi-tenant container hardening contract introduced in the
prior commit so operators and integrators know what is enforced and why.
- application.yml: declare `cameleer.server.runtime.dockerruntime`
alongside the other runtime properties (empty = auto-detect runsc).
- HOWTO.md: add the override row to the Runtime config table.
- SERVER-CAPABILITIES.md: new "Multi-Tenant Runtime Sandboxing" section
describing the cap_drop, no-new-privileges, AppArmor, read-only rootfs,
pids_limit, /tmp tmpfs, and runsc auto-detect contract — plus the
on-disk state caveat that motivates issue #153.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
f6b76b2d5e