W104.5 — Verify static host, Adventures, and service-contract against current engine

[The-Running-Dev]

Summary

Closes the last unmet W104 (Release 0.11 Compatibility Sweep) criterion. Text client and MCP server were already proven in-repo by PR #449; this closes the remaining three named consumers — the static host, Adventures, and the service-contract generator — which live outside this repository.

• Packed the engine at e52e7a1 (npm pack from src/engine, sha256 ef934530...aa2a2) and manually re-vendored the tarball into three sibling checkouts on this machine: SubZeroDev.Platform's game-service workload, SubZeroDev.ServiceContract, and SubZeroDev.Adventures (engine submodule bumped to the same commit).
• Each consumer's own existing test suite passed unchanged against the current engine:
  • ServiceContract: 59/59 tests (arity gate, opaque-payload gate, engine-version gate).
  • Platform game-service: typecheck clean; dependency-direction.test.ts (static AST guard: no runtime import of the engine package reaches the store) passed; full suite 197/198 (1 pre-existing skip) including the durable Postgres profile via docker compose.
  • Adventures: lint, typecheck, test (198), test:browser (38), test:build all green with the submodule at e52e7a1. (format:check fails only on pre-existing unrelated clutter files already tracked in that repo — confirmed via git status that nothing else in the tree changed besides the submodule pointer.)
• None of the three reach past the declared SessionStore/Portable*/fromPortable surface — confirmed by Platform's own automated guard and Adventures' single, pre-existing, explicitly-commented non-contract import (shared/campaign-registry.ts).
• All three sibling checkouts were reverted to their prior committed state after verification — this PR makes no changes outside GameEngine.

Closes #392

Changes

• build/Test-CompatibilitySweep.ps1: corrected the sweep's docstring, which claimed these three consumers "stay unverified here" — they've now been verified manually, with the evidence recorded on issue W104 — Release 0.11 Compatibility Sweep #392 and the point-in-time nature of that proof noted (it needs re-running whenever any of the three repos re-vendors this engine).

Verified

Ran and passed:

• Typecheck — npm --prefix src/engine run typecheck, no errors
• Lint — npm --prefix src/engine run lint, no findings
• Test — npm --prefix src/engine test, 97 files / 1594 tests, all passed
• Pack package — npm pack --silent, tarball produced cleanly
• Inspect tarball — no src/, no tsconfig*.json, no .test.* build artifacts, package/dist/ present
• Consumer smoke — consumer-smoke/: install, build, and smoke against the fresh tarball, clean
• Parse-check PowerShell scripts — every *.ps1 in the repo, zero parse errors
• Run Pester tests — 324 passed, 0 failed, 35 skipped (intentional)
• Validate the core/companion split — tools/Test-Companion.ps1: Valid, 23 core / 14 companion / 9 with no companion
• Validate Markdown links, terminology, and generated files — ./build/Test-Documentation.ps1: 18 generated engine pages plus compatibility pointers and the guide, and 197 Markdown files, all pass
• Build and verify landing page — npm --prefix site run check (format/lint/typecheck/test [15]/test:browser [11]/test:build/test:merge), all green
• Test the host — dotnet test src/host/.../Host.Tests.csproj -c Release: 12/12 passed

Ran and failed: none

Did not run:

• Check the design state against the tree — tools/Test-DesignState.ps1 exited 2 (could-not-evaluate, not a finding): ContractListUnreadable: SectionNotFound: design/20-contract.md and StateSetAbsent: design/state/ is missing or holds no records other than WorkRef mirrors — this repository has not adopted design/state/ as its live state set
• Build documentation — docs.ps1 is not present in this checkout (installer-generated, not committed, per CLAUDE.md); the production Docusaurus build needs it plus Docker. The "Verify Documentation Build" check on this PR is where this answer comes from
• Merge landing page into documentation build — depends on artifacts/docs from the "Build documentation" step above, which did not run; npm --prefix site run merge fails with "has no protected docs subtree" for exactly that reason
• Positive route and probe smoke — needs REGISTRY_TOKEN (a CI-only secret) to restore SubZeroDev.Platform.Hosting and build the host Docker image; not available locally. The "Platform Static Host Image" check on this PR is where this answer comes from
• Negative fixture -- corrupted artifact must fail to start — depends on the same host image as above, same missing credential

Test plan

• src/engine typecheck/lint/test pass
• ServiceContract suite passes against the current engine (59 tests)
• Platform game-service suite passes against the current engine, including the durable Postgres profile (197 tests, 1 pre-existing skip)
• Adventures lint/typecheck/test/test:browser/test:build pass against the current engine (274 tests)

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Agent detail

• Slice: W104 — design/30-slices.md § W104 @ e52e7a1
• Criteria met: W104.5 (this PR); W104.1–W104.4, W104.6, W104.7 landed by PRs W104 (partial) — Release 0.11 Compatibility Sweep #447–W104.5 - Record the compatibility sweep's existing in-repo evidence #449
• Left undone: none — all seven W104 criteria are now met