v1.8.0 — Autonomous Delivery Platform reusables

Advances @v1. New reusable workflows: verify-and-close, auto-merge-on-green, independent-verifier, dependabot-automerge, security-scan, publish-pypi, capability-health-probe, sonar-new-code-reset, sonar-triage. New governance: per-agent App manifests + parametrised agent-token, affordance/harness skeletons, ADR policy + index, loop state-machine + guardrail harness, two-profile merge rulesets + merge-queue config, renovate engine-manager. meta-quality-gate now runs the no-attribution reject leg (D1) by default (uv-installed, PR-body scan advisory). Additive + guard-forward.