ci(e2e): Phase 5c — nightly-deploy-multi + parametrize contract-deploy tests

[EnderOfWorlds007]

Phase 5c of the E2E redesign — multi-contract publish path + test parametrization.

Summary

• New nightly-deploy-multi cell exercises the multi-contract --contracts batch publish path (TokenA.sol + TokenB.sol → e2e-cli-multi.dot)
• Refactored the 3 near-identical contract-deploy tests (foundry, hardhat, multi) into a shared runContractDeployTest helper — net line reduction of ~40 LOC of repeated boilerplate
• The CDM describe.skip block stays as-is pending its fixture upgrade (Phase 5f)
• note and manualToolchain fields were considered and dropped per the simplify self-review: neither would be consumed inside the helper body

Test plan

• Pattern counts verified locally: foundry=1, hardhat=1, multi=1, full pipeline=3
• YAML parses clean (python3 -c "import yaml; yaml.safe_load(...)")
• pnpm exec tsc --noEmit clean
• pnpm format:check clean
• pnpm test — 445 unit tests pass

Out of scope (subsequent sub-PRs)

• Phase 5d: nightly-rejections-full (constructor-args new test)
• Phase 5e: nightly-deploy-modable (--modable + GH repo)
• Phase 5f: rust-cdm fixture upgrade + re-add pr-deploy-cdm
• Phase 6: chaos cells
• Phase 7: published-binary surface

[github-actions]

Dev build ready — try this branch:

curl -fsSL https://raw.githubusercontent.com/paritytech/playground-cli/main/install.sh | VERSION=dev/ci/e2e-phase-5c-multi-contract bash

[github-actions]

E2E Test Pass · ✅ PASS

Tag: e2e-ci-pr · Branch: ci/e2e-phase-5c-multi-contract · Commit: 18e6e9d · Run logs

Cell	Result	Time
pr-deploy-frontend	✅ PASS	9m54s
pr-mod	✅ PASS	1m20s
pr-install	✅ PASS	0m33s
pr-init-session	✅ PASS	1m23s
pr-deploy-foundry	✅ PASS	1m40s
pr-preflight	✅ PASS	1m57s
${{ matrix.cell }}	⏭️ SKIP	0m00s
${{ matrix.cell }}	⏭️ SKIP	0m00s

Sentry traces: view spans for this run