RWA 2026.04.06

Verification coordinator agent, reusable verification templates, and workflow integration for end-to-end reproducibility checks.

Added

• Verification coordinator agent: Added .github/agents/verification-coordinator.agent.md for human-friendly and LLM-executable verification workflows, including verifier preference capture and execution contract requirements.
• Verification template set: Added templates/verification/verification-workbook.qmd, templates/verification/verifier-preferences.yaml, templates/verification/llm-execution-contract.yaml, and templates/verification/verification-instructions-tracker.qmd.

Changed

• Orchestration stage flow: Updated research-orchestrator to include a dedicated verification stage routed to @verification-coordinator across supported workflow types.
• User and contributor docs: Updated README.md, docs/getting-started.md, docs/architecture.md, and CONTRIBUTING.md to document the new verification workflow capability.