feat: add collective resilience and evaluation closure

[douglas-grishen]

What changed

Adds six opt-in, provider-neutral open-core capabilities:

1. Replicated mission lifecycle continuity with certified availability, exact takeover and monotonic rollback protection.
2. Governed adaptive sparse-overlay refresh with a locally pinned quorum policy and authenticated remote reconciliation.
3. Heterogeneous assessor ensembles with request-bound votes, independence groups and modality coverage.
4. Attested mission-control continuity with a configurable horizon up to 10,000 healthy decisions.
5. Multi-domain physical/social/cyber/hybrid environment descriptors, exact scenario manifests and conformance probes.
6. A verified benchmark registry and deterministic leaderboard with trusted trace provenance, paired baselines, source/artifact/build locks and replay exclusion.

The public surface uses industry terminology only. New APIs are additive subpaths or root exports and remain opt-in.

Security and developer impact

• Continuity and control state use revision-and-digest CAS plus monotonic rollback witnesses.
• Remote overlay evidence cannot install its own weaker policy.
• Assessor votes and benchmark traces are bound to exact requests/suites.
• Benchmark submissions cannot self-assert provenance or occupy multiple ranks through replay.
• Environment conformance rejects scenario substitution and exercises population and byte limits.
• Raw prompts, observations, model content and simulator private state remain outside durable control records.

Validation

• Builds passed for @agentplat/collective-runtime, @agentplat/inference-control, @agentplat/mesh and @agentplat/mesh-sim.
• 58 focused integration/security tests passed, including 10,000-step adversarial schedules.
• Public TypeScript consumer contract passed.
• Public-surface audit passed for 3,026 files with no secret or restricted-terminology findings.
• Pack smoke passed across 48 tarballs and 112 packed API surfaces from clean pnpm/npm consumers.
• git diff --check passed.

Stack

This PR is intentionally based on codex/governed-mission-inference-scale-v1 so it contains only this closure increment.