XY-868: [ELF benchmark vNext P2] Add live real-world adapters for ELF and qmd

[yvette-carlisle]

Summary

• Add a Docker-isolated live real-world adapter materializer for ELF service runtime and qmd CLI runtime.
• Add representative live adapter fixtures and a cargo-make task that materializes adapter_response fixtures, scores reports, and writes summary evidence.
• Update the external adapter manifest and benchmark docs so fixture-backed, live-baseline-only, and live-real-world claims remain distinct.

Validation

• cargo make fmt
• cargo make lint-fix
• cargo make checks
• cargo make real-world-memory-live-adapters

Evidence

• ELF live real-world report: 3 encoded jobs, 3 pass, expected evidence recall 1.0.
• qmd live real-world report: 3 encoded jobs, 3 pass, expected evidence recall 1.0.
• Semantic drift audit verdict: pass; changed docs claims match task, manifest, and report evidence.