CI: validate Rust receiver resolution

[dip-labs]

Internal fork validation only.

Runs the repository CI against the Rust receiver-resolution patch before any upstream proposal. No PR is being opened against cq27-dev/rag-rat.

[github-actions]

SCIP oracle — resolution report

Heuristic→compiler edge resolution per corpus. Δ compares resolved-after to the main baseline (only when the corpus profile + tool version match).

corpus	tool	edges	resolved (heuristic → compiler)	precision	recall	monikers	Δ vs main
c-libuv	scip-clang	12894	37.9% → 48.6%	90.2%	55.3%	679	— (no baseline)
cpp-yaml	scip-clang	9423	43.2% → 72.9%	82.5%	40.6%	1056	— (no baseline)
py-django	scip-python	12937	28.8% → 73.5%	96.7%	84.1%	3701	— (no baseline)
py-rich	scip-python	8383	27.6% → 92.3%	95.0%	81.3%	1196	— (no baseline)
rust-time	rust-analyzer	11040	39.1% → 59.4%	68.9%	83.6%	538	— (no baseline)
ts-rxjs	scip-typescript	7875	39.6% → 94.9%	87.3%	77.4%	631	— (no baseline)

_{resolved = Exact/Syntactic + compiler upgrades + resolved-external, over edge candidates with a callee range. precision/recall are the oracle eval metrics.}