improved-train

docs: drop PROVER_SIDECAR_URL from .mcp.json examples

npx-dist: self-contained, npx-runnable AI Nurse MCP package

mcp-server: auto-supervise prover sidecar (no manual bootstrap/start)

prover-sidecar: full consult settlement + MCP wiring (end-to-end working)

prover-sidecar: viability scaffold + headless WASM smoke test (PASSING)