Thing/docs/parity-testing-harness.md

Eve Parity Testing Harness

The parity harness is the shared evidence path for Eve runtimes. It does not try to prove byte-identical pixels. It proves that every runtime is aiming at the same provider-owned CultUI surface: same fixture, same retained tree, same style-token expectations, same control anatomy, and explicit capture gaps.

Authority

• tools/parity/parity-manifest.json owns the fixture matrix, runtime list, and expectations.
• tools/parity/run-parity.mjs owns semantic fixture checks and report generation.
• Runtime capture adapters own screenshots or frame capture for their platform.
• artifacts/parity/latest.md and artifacts/parity/latest.json are reports, not source truth.

The manifest is the cut line. If a fixture or runtime is not in the manifest, it is not part of the parity claim.

Runtime capability manifests are the runtime-owned side of that claim. When a runtime entry has capabilityManifest, the harness validates the JSON document against gamecult.eve.runtime_capability.v1 and cross-checks runtime id, supported features, supported and unsupported plugin declarations, command transport schema, and incubation metadata. The central parity manifest may coordinate split-readiness, but the runtime body must publish the capability claim it expects other repos to consume.

The web reference and Unity UI Toolkit both publish runtime capability manifests. Web uses web/eve-runtime-capability.json to make the browser oracle explicit: it consumes provider advertisements, lowers provider-owned surfaces, emits gamecult.eve.command.v1 intents, and records Chrome headless capture evidence without becoming provider truth. Unity UI Toolkit uses the same path for its sai.vn, norn.graph, and tex.math plugin projection adapter proofs while leaving Sai, Norn, and TeX semantic authority in their independent sidecar plugin owners.

Run

Semantic checks:

powershell -ExecutionPolicy Bypass -File .\scripts\run-parity-harness.ps1

Hard screenshot smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-parity-smoke.ps1

Nightwing owns the Linux Flutter capture body. If its user-local Flutter SDK is missing, install it first:

powershell -ExecutionPolicy Bypass -File .\scripts\install-nightwing-flutter-sdk.ps1

The smoke expands every resizable renderer across the manifest's responsive viewport matrix:

• phone: 390 x 844
• tablet: 768 x 1024
• desktop: 1280 x 720

Device runtimes also capture native physical panel cases when the platform adapter can control orientation without overriding size. Android Flutter currently emits:

• native-portrait: Periwinkle at physical portrait resolution
• native-landscape: Periwinkle at physical landscape resolution

The semantic runner writes:

• artifacts/parity/latest.md
• artifacts/parity/latest.json
• artifacts/parity/<timestamp>/parity-report.md
• artifacts/parity/<timestamp>/parity-report.json
• artifacts/conformance/latest/index.md
• artifacts/conformance/latest/index.json
• artifacts/conformance/latest/packs/*.json
• artifacts/conformance/<timestamp>/...

The conformance export includes conformanceHandoffPath, pointing at the machine-readable EveConformance split map. That handoff is incubation evidence: it names which runner, schema, consumer-smoke, and fixture-corpus paths move when the conformance body leaves Eve.

Handoff documents are also copied into the export under handoffs/*.json. Consumer smokes assert those exported copies, not just Eve-local source paths, so owner repos can inspect plugin, provider, runtime, and conformance handoff maps from the exported pack itself.

The conformance export also carries a gamecult.eve.capability_matrix.v1 projection. It summarizes pack health, plugin ABI/capability claims, provider surfaces/commands/receipts, runtime feature/capture/command coverage, split readiness, and handoff counts. This is derived evidence for consumers, not a new source of truth. The export schema and consumer smoke now require minimum record shapes for plugins, providers, runtimes, and split targets. Owner repos should be able to depend on ids, owners, statuses, split targets, manifest or advertisement paths, feature/plugin arrays, and blocker/proof arrays without reading Eve's parity manifest.

Capability gaps are exported as capabilityGaps[]. They are derived from missing plugin/provider/runtime evidence, declared unsupported plugin projection, capture gaps, and split blockers. Consumer smokes can assert named gap substrings with --expect-capability-gap. When a provider advertises a world-surface lowering target that no runtime claims, the gap is assigned to the matching pending runtime owner when one exists, such as unity-scene -> EveUnity or tui -> EveTui. Eve only owns the gap when no runtime target has been declared at all. The same facts are also exported as worldSurfaceLoweringGaps[] so runtime owners can consume provider id, surface id, target id, owner repo, runtime id, split target, and runtime status as typed fields instead of parsing the generic gap text. The full advertised-target ledger is exported as worldSurfaceLoweringCoverage[]. Each record joins a provider-owned world surface to one advertised lowering target and reports whether that target is claimed, missing-claim, or missing-runtime, along with the runtime owner and runtime id. Consumer smokes can assert complete coverage facts with --expect-world-lowering-coverage <providerId:surfaceId:targetId:status:ownerRepo:runtimeId>. Provider-owned world/editor surfaces are exported as interactiveWorldSurfaces[]. These records index the provider id, owner repo, surface id, surface kind, projection kind, state schemas, command boundary, receipt schema, lowering targets, and ownership rule so runtime lowerers can discover provider-authored world surfaces without importing provider source layout. Consumer smokes can assert advertised targets with --expect-interactive-world-surface <providerId:surfaceId:targetId:ownerRepo>. The command path for those targets is exported as commandBoundaryCoverage[]. Each record joins a provider-owned surface, advertised lowering target, runtime owner, provider command boundary, receipt schema, and runtime command envelope schema. Status is covered only when the runtime has claimed the target and advertises gamecult.eve.command.v1; otherwise it reports missing-runtime, missing-runtime-claim, missing-provider-boundary, or missing-command-transport. Consumer smokes can assert it with --expect-command-boundary-coverage <providerId:surfaceId:targetId:status:ownerRepo:runtimeId>. The browser reference lowerer also copies the active surface's advertised worldInteraction.commandBoundary and worldInteraction.receiptSchema into gamecult.eve.command.v1 intents, falling back to component action metadata only when the advertisement lacks those fields. That keeps command routing on the provider/plugin advertisement contract instead of letting the browser reference probe provider source layout. Declared runtime/plugin projection gaps are exported as runtimePluginProjectionGaps[]. These records carry runtime id, runtime owner, split target, plugin id, reason, severity, and fixture lists so EveUnity, EveElectron, Sai, Norn, and TeX owners can distinguish "this projection runtime cannot project the plugin yet" from "plugin semantics belong in Eve core." Device-edge dashboard proofs that do not claim plugin projection are not listed as failed plugin clients. Consumer smokes can assert real projection gaps with --expect-runtime-plugin-gap <runtimeId:pluginId:ownerRepo>. The same claims are exported as runtimePluginProjectionCoverage[], including positive supported projection adapters and declared unsupported gaps. This lets runtime and plugin owners consume one ledger for "Unity UI Toolkit has projection adapters for independent Sai and Norn sidecar-advertised output," "Unity scene can project Norn's sidecar-advertised embedded graph shell," and "Electron does not have generic plugin projection yet" instead of walking nested runtime records. Consumer smokes can assert entries with --expect-runtime-plugin-projection <runtimeId:pluginId:status:ownerRepo>. Provider surface plugin requirements are also joined with runtime projection support as providerRuntimePluginProjectionCoverage[]. These records answer the real lowering question: whether a provider surface's required or optional-nested plugin can be projected by a concrete runtime. Required plugin failures are blockers; optional nested failures are degraded lowerings. Consumer smokes can assert them with --expect-provider-runtime-plugin-projection <providerId:surfaceId:runtimeId:pluginId:status:runtimeOwnerRepo>.

The conformance export includes runtime capabilityManifestPath and capabilityManifestErrors fields so external consumers can distinguish a generic projection runtime from a runtime that can project plugin-declared capabilities. Browser reference fallback discovery is exported as localProviderCatalogs[]. Each record names the runtime, source catalog path, exported catalog copy, schema, purpose, provider ids, advertisement paths, surface count, status, and validation errors. This proves which local provider/plugin advertisements the web picker is consuming without turning the fallback file into live discovery truth. Consumer smokes can assert entries with --expect-local-provider-catalog <runtimeId:status:path-substring>, --expect-local-provider-catalog-provider <runtimeId:providerId>, and --expect-local-provider-catalog-advertisement <runtimeId:advertisement-path-substring>.

Plugin handoff paths are exported as plugins[].handoffPath for owner repos such as Sai, Norn, and EvePlugins. These paths are incubation evidence for where plugin manifest, advertisement, ABI fixture, and conformance ownership must move; they are not plugin runtime state. Plugin handoff move/source coverage is exported as pluginHandoffMoveCoverage[]. Each record joins plugin id, owner repo, split target, handoff move set, destination owner, replacement proof, and current source path status. Consumer smokes can assert them with --expect-plugin-handoff-move <pluginId:moveSetId:pathKind:status:path-substring>. Provider handoff move/source coverage is exported as providerHandoffMoveCoverage[]. Each record joins provider id, owner repo, handoff move set, destination owner, replacement proof, and current source path status. Provider repos such as Aetheria can assert them with --expect-provider-handoff-move <providerId:moveSetId:pathKind:status:path-substring> without depending on Eve's source layout. Plugin ABI fixture operations are exported as plugins[].abiOperationContracts with operation, input, and expect blocks. Plugin owners can consume the operation-level contract for describe, validate, project, lower, measure, and apply without opening Eve-local fixture files. The same operation set is indexed as root pluginAbiOperationCoverage[] records with plugin id, owner repo, operation, status, fixture path, input keys, and expect keys. Plugin-owner smokes can assert contracted operations with --expect-plugin-abi-operation-coverage <pluginId:operation:status:ownerRepo> without walking nested plugin records. Provider-advertised plugin requirements are indexed as root providerPluginRequirementCoverage[] records. These join provider id, surface id, plugin id, plugin owner, plugin status, availability, required capabilities, optional capabilities, and missing capabilities so provider and plugin owners can consume requirement coverage without reconstructing the provider/plugin join. availability: optional-nested means the parent surface can compose that independent plugin when available; it is not a parent-plugin dependency and it does not move nested semantics into the parent plugin. Consumer smokes can assert them with --expect-provider-plugin-requirement <providerId:surfaceId:pluginId:status:pluginOwnerRepo[:availability]>. Plugin-owner smokes should use the optional availability field when proving that Sai's required VN plugin is distinct from optional nested Norn or TeX surfaces. For the parent/nested relationship itself, use --expect-independent-nested-plugin <providerId:surfaceId:parentPluginId:nestedPluginId:nestedOwnerRepo>; this checks that the parent plugin is required, the nested plugin is optional-nested, the nested owner is separate, and nested capabilities remain optional composition rather than parent-plugin dependency.

The runtime conformance pack is evidence-shaped, not fixture-shaped. Its packs/runtime.json document includes runtimeTargets so runtime repos can consume status, supported features, plugin support, command schema, lifecycle, capture status, world-surface lowering claims, and missing evidence without reading Eve's local parity manifest. The runtime-owner consumer smoke asserts EveUnity lifecycle stage status and pending release/test/capture proofs from the exported runtime record, plus release contract fields such as package name, artifact kind, tag pattern, and package root, plus Unity EditMode test runner contract fields such as runner script, package name, test assembly, and platform. It also asserts that web and Unity UI Toolkit claim their provider-advertised world-surface lowering targets. Split blockers are exported both as human-readable blockers[] and as typed blockerRecords[] / root splitTargetBlockers[] entries. Split-target consumers can assert blocker kind and subject with --expect-split-target-blocker-record <targetId:kind:subject> instead of scraping prose from handoff notes. Runtime split handoff move/source coverage is exported as splitHandoffMoveCoverage[]. Each record joins a split target, runtime id, handoff move set, destination owner, replacement proof, and source path status. current paths are Eve-incubated code that still needs to leave, observed-provider paths are provider-owned pressure sources such as Aetheria's current Electron client, and replacement-required records mark move sets where no generic runtime source exists yet. Consumer smokes can assert them with --expect-split-handoff-move <splitTarget:runtimeId:moveSetId:pathKind:status:path-substring>. Runtime split handoff documents themselves use gamecult.eve.runtime_split_handoff.v1; the parity runner validates the handoff document shape and exports any splitHandoffErrors on the runtime record. Plugin, provider, and EveConformance handoff documents are also schema-backed: gamecult.eve.plugin_handoff.v1, gamecult.eve.provider_handoff.v1, and gamecult.eve.conformance_handoff.v1 are exported through the schema catalog. Owner consumer smokes assert those schemas before trusting handoff paths. Runtime lifecycle records use gamecult.eve.runtime_lifecycle.v1. Standalone lifecycle documents such as flutter/eve_parity/eveflutter-lifecycle.json and embedded runtime capability lifecycle blocks validate against the same stage shape, and exported runtime records carry lifecycleErrors. Runtime shell output contracts are schema-backed too: gamecult.eve.electron_shell_projection.v1 covers the Electron shell tree, and gamecult.eve.tui_grid.v1 covers the compact terminal grid. The Electron and TUI runtime tests validate real lowered objects against those schemas.

After generating the parity report, run-parity-harness.ps1 copies artifacts/conformance/latest into artifacts/conformance-consumer-smoke/export and runs tools/conformance/consume-export.mjs against that copied layout. That smoke proves the conformance export can be consumed through its own index and pack files without reading tools/parity/parity-manifest.json.

EveConformance handoff smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-eveconformance-handoff-smoke.ps1

That script validates tools/conformance/eveconformance-handoff.json against the parity manifest and, when present, the generated conformance export. It checks the runner, schema, consumer-smoke, fixture-corpus move sets and the required core/plugin/provider/runtime pack families.

Provider-owned consumer smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-aetheria-conformance-consumer-smoke.ps1

That script runs the same export consumer from E:\Projects\Aetheria and asserts the provider pack, aetheria-world fixture, aetheria provider entry, aetheria-world-command-replay scenario, daemon game/editor surface-kind claims, and provider handoff path. It also asserts the Aetheria runtime.captureArtifacts[] emitted by Unity UI Toolkit, Unity Scene, Electron shell, and TUI, so provider consumption proves real runtime artifacts rather than only advertised lowering targets. Generated copies remain under Eve's artifacts/aetheria-conformance-consumer-smoke so the provider worktree does not become dirty merely by proving the boundary. Runtime capture request builders select a declared provider surface by id when requested. Unity UI Toolkit, Electron shell, and TUI declare aetheria.daemon.editor as an additional capture surface; Unity Scene does not, because the editor advertisement does not include the unity-scene lowering target.

Plugin owner handoff smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-plugin-handoff-smoke.ps1

That script validates the Sai and Norn handoff manifests against their plugin manifests, advertisements, ABI fixtures, move-set paths, contract inputs, and external proofs. It also checks that the manifest and advertisement agree on the runtime-independent executable sidecar boundary: gamecult.eve.plugin_abi.v1, CultMesh/stdio transport, renderer independence, no provider-state mutation, provider-owned command acceptance, and runtime.sidecar process/protocol/schema fields. The plugin-owner conformance smoke also asserts those handoff paths, runtime boundary claims, and exported sidecar fields from the conformance export.

Aetheria provider handoff smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-aetheria-provider-handoff-smoke.ps1

That script validates web/fixtures/aetheria-provider-handoff.json against the provider advertisement and scenario. The handoff names the advertisement, interactive world surface fixture, provider scenario, Eve contracts, forbidden imports, and external proofs that must become Aetheria-owned before the provider pack leaves Eve incubation.

EveFlutter consumer smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-eveflutter-conformance-consumer-smoke.ps1

That script runs the export consumer from flutter/eve_parity and asserts the runtime pack, Sai provider fixture, Flutter runtime targets, and EveFlutter split target without reading tools/parity/parity-manifest.json.

Split-target consumer smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-split-target-conformance-consumer-smoke.ps1

That script asserts that EveFlutter, EveUnity, EveElectron, and EveTui are exported as incubating split targets, that their current split-readiness proofs are passed, and that their graduation blockers remain visible to consumers. A target being present is not enough; future owner repos must be able to consume why it is or is not ready to leave Eve incubation. EveElectron is intentionally pending: its handoff names the generic Electron shell boundary, while the Starbridge RTS client remains Aetheria-owned product code until a provider-agnostic shell exists. The same smoke asserts that the Aetheria Electron source paths named by the handoff currently exist as observed-provider sources, so the extraction pressure is visible without turning those paths into EveElectron authority. The Electron runtime now claims a narrow provider-advertised surface-tree command surface and exposes a typed capture request contract plus a schema-backed JSON shell projection artifact. It preserves embedded document slot identity in the generic shell projection, and the split-target smoke asserts both Aetheria and eve.world-smoke runtime.captureArtifacts[] for electron-shell so the generic shell proof cannot collapse back into the Aetheria RTS client. Packaged rendering and actual window PNG capture remain blockers. EveUnity's UI Toolkit handoff does the same for Aetheria's Unity consumer boundary: Aetheria's Unity Packages/manifest.json, generated GameCult.Eve.UnityUIToolkit.csproj, assets root, daemon catalog client, and Unity smoke are exported as observed-provider paths. That proves a real game consumes the generic EveUnity package/contract while keeping product state, assets, generated projects, scenes, and receipts in Aetheria. The same split-target smoke now asserts runtime.captureArtifacts[] for both Aetheria and the generic eve.world-smoke provider on unity-uitoolkit and unity-scene, so generic Unity lowering evidence cannot collapse back into an Aetheria-only proof. EveTui is now an active incubating runtime: it claims a lossy provider-advertised terminal-grid command surface, preserves embedded document slot identity in the grid artifact, projects Sai/Norn/TeX fallback shells, and attaches a typed JSON grid capture. The split-target smoke asserts both Aetheria and eve.world-smoke runtime.captureArtifacts[] for tui, so the terminal-grid proof stays generic instead of becoming Aetheria-only evidence. Repo/package graduation and owner-repo capture production remain blockers. EveUnity includes both the active unity-uitoolkit package proof and the pending unity-scene runtime boundary; UI Toolkit support is not treated as full Unity scene/world lowering. The unity-scene runtime now claims a narrow scene graph command surface, preserves embedded document slot identity, and exposes a typed capture request contract plus a schema-backed JSON scene projection artifact, while actual scene/frame PNG capture and release remain explicit blockers.

The Flutter widget smoke also exercises EveProviderCatalog and EveProviderPicker against a conformance-export-shaped provider list. That is the runtime-side provider picker proof; it consumes provider entries and plugin requirements without reading web fixture paths.

Aetheria Unity package consumer smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-aetheria-unity-package-smoke.ps1

That script checks that Aetheria's Unity package manifest consumes Eve's surface and UI Toolkit packages by file reference, verifies the generated GameCult.Eve.UnityUIToolkit.csproj includes all current Unity runtime source files, then builds the package through Aetheria's Unity-generated project. It is consumer-build evidence, not a replacement for runtime-owned Unity capture or release CI.

Aetheria Unity EditMode test smoke:

powershell -ExecutionPolicy Bypass -File .\scripts\run-aetheria-unity-editmode-tests.ps1

That script temporarily adds org.gamecult.eve.unity-uitoolkit to Aetheria's Unity testables, runs GameCult.Eve.UnityUIToolkit.Tests in Unity batchmode, writes XML and log artifacts under artifacts/aetheria-unity-editmode, and restores Packages/manifest.json before returning. The test asmdef uses Unity-style precompiled references for the Brokkr/CultMesh DLLs that Unity needs to resolve GameCult.Mesh; this complements the normal CultLib .NET/NuGet dependency story rather than replacing it. The runner proves the incubating package test lifecycle, not final EveUnity-owned release or capture. The exported runtime lifecycle records that runner contract so EveUnity can inherit the Unity-specific test proof without making Eve responsible for CultLib package distribution.

Unity runtime lifecycle evidence:

packages/org.gamecult.eve.unity-uitoolkit/eve-runtime-capability.json declares release, test, and capture lifecycle stages for the UI Toolkit runtime. The parity harness validates those lifecycle claims against tools/parity/parity-manifest.json and checks that declared evidence paths exist. The current lifecycle proof is deliberately split:

• release: tools/eveunity/eveunity-release-contract.mjs builds a typed gamecult.eve.runtime_release_request.v1 request from the runtime capability manifest and UPM package manifest, including required package dependency owners. tools/eveunity/eveunity-release-artifact.mjs then packs the declared package root into the declared UPM .tgz artifact. The tagged EveUnity release remains a split blocker;
• test: package-owned EditMode tests run through Aetheria in Unity batchmode, and Aetheria can build the package through Unity's generated project. The test contract names CultLib-owned NuGet/precompiled assembly inputs without making EveUnity own CultLib package distribution;
• capture: tools/eveunity/eveunity-capture-contract.mjs builds a typed gamecult.eve.runtime_capture_request.v1 request from the runtime capability manifest and Aetheria provider advertisement; Unity editor or batchmode PNG capture remains a split blocker. tools/eveunity/eveunity-uitoolkit-capture-artifact.mjs also writes a schema-backed gamecult.eve.unity_uitoolkit_projection.v1 JSON projection artifact at artifacts/eveunity-uitoolkit-capture/latest/unity-uitoolkit-projection.json. That artifact proves provider-advertised UI Toolkit projection, embedded slots, and sidecar plugin projection metadata without pretending to be a rendered Unity frame.

TUI capture evidence is already typed even though EveTui remains incubating. tools/evetui/evetui-capture-artifact.mjs lowers the Aetheria world surface through EveTuiShell into gamecult.eve.tui_grid.v1 and writes artifacts/evetui-capture/latest/tui-grid.json. The parity export includes that record as runtime.captureArtifacts[]; runtime-owner consumers can assert it without depending on Eve's source layout. The remaining blocker is owner-repo production of the same capture path, not absence of a cell-grid artifact.

Electron semantic capture evidence follows the same evidence rule without pretending it is a packaged window PNG. tools/eveelectron/eveelectron-capture-artifact.mjs lowers the Aetheria world surface through EveElectronShell into gamecult.eve.electron_shell_projection.v1 and writes artifacts/eveelectron-capture/latest/electron-shell-projection.json. The remaining blocker is packaged Electron window capture.

Unity scene semantic capture evidence follows the same rule without pretending it is a rendered Unity frame. tools/eveunity/eveunity-scene-capture-artifact.mjs lowers the Aetheria world surface into gamecult.eve.unity_scene_projection.v1 and writes artifacts/eveunity-scene-capture/latest/unity-scene-projection.json. It records scene graph projection, embedded slots, sidecar plugin projection metadata, and a playableWorld extraction for generic world.scene3d / world.entity3d ARPG data: state pointer, asset manifest, camera/input profile, entity transforms, asset refs, and daemon command affordances. The Unity scene runtime also declares providerSurfaceSession and carries EveUnitySceneClientSession, a provider-snapshot boundary that lowers the active surface and emits gamecult.eve.command.v1 intents without Aetheria types. It also declares providerSurfaceSource through EveUnitySceneProviderConnection, IEveUnitySceneProviderSurfaceSource, and IEveUnitySceneCommandSink, so the live CultMesh/CultNet adapter has a narrow runtime-owned port to implement. The runtime now also declares playableWorldScenePresentation: EveUnityPlayableWorldPresenter maps provider-authored entity rows and asset refs into scene sink operations while removing entities absent from later provider snapshots. The remaining blocker is that live adapter, Unity GameObject/prefab-backed scene sink and asset resolver, and Unity screenshot or frame-capture PNG production from EveUnity.

Runtime capture probe coverage is exported as runtimeCaptureProbeCoverage[]. Each record joins runtime status, capture owner, lifecycle capture contract, current semantic/cell-grid artifact, pending proofs, and artifact errors. This keeps json-projection evidence useful without letting it impersonate the contracted png artifact for Unity or Electron. Runtime-owner consumers can assert the ledger with --expect-runtime-capture-probe <runtimeId:status:contractArtifactKind:captureOwnerRepo>.

EveUnity split handoff evidence:

powershell -ExecutionPolicy Bypass -File .\scripts\run-eveunity-split-handoff-smoke.ps1

That script validates packages/org.gamecult.eve.unity-uitoolkit/eveunity-split-handoff.json against the runtime capability manifest. The handoff names the package paths, lifecycle stages, Eve contracts, forbidden imports, and external proofs that must become EveUnity-owned before the runtime leaves incubation.

The smoke runner writes:

• artifacts/parity-smoke/<timestamp>/parity-smoke.md
• artifacts/parity-smoke/<timestamp>/parity-smoke.json
• one PNG per target that has a real capture body.

Current Checks

The first pass is semantic and fixture-driven:

• compile local CultUI .eve fixtures;
• load local JSON surface fixtures;
• check provider id;
• check required component kinds;
• check minimum component counts where useful;
• check required style tokens;
• check required bindings;
• check retained slider skins and control parts.
• record the responsive viewport matrix used by screenshot smoke.
• export screenshotComparisonMetrics[] records for structure, color tokens, bounding boxes, and text presence.

This already catches the most embarrassing class of parity lie: a runtime or fixture claiming to render CultUI while the retained tree no longer contains the partitions, bindings, tokens, or slider anatomy the renderer is supposed to lower.

Screenshot comparison metrics are intentionally not byte-identical image checks. Structure and color-token scores come from the authored surface contract; text-presence scores come from authored text-bearing nodes; bounding box records name whether authored layout boxes exist or whether a runtime still owes a capture/layout probe. A missing Unity, Electron, TUI, or Direct2D capture body therefore appears as pending-capture, not as fake visual parity.

The web reference has the first measured bounding-box probes. The harness runs scripts/run-web-reference-layout-probe-smoke.ps1, which builds the browser lowerer and uses Chrome headless to write artifacts/web-reference-layout-probe/latest/embedded-surface.json and artifacts/web-reference-layout-probe/latest/sai-vn.json as gamecult.eve.web_layout_probe.v1. Parity consumes those artifacts and marks web:embedded-surface:bounding-boxes and web:sai-vn:bounding-boxes as pass with evidenceLayer: runtime-layout-probe.

The fixture matrix also includes embedded-surface, which proves that nested CultMesh document slots survive the shared surface contract. The web reference, Flutter parity body, Unity UI Toolkit lowerer, iOS UIKit renderer, and native Android Kotlin dashboard renderer all need to understand surface.slot/embeddedDocuments. Rust participates at the CultMesh document sync layer: it must preserve the same gamecult.eve.surface.v1 slot contract through typed document replication even when it is not painting pixels.

Nested surface support is a required feature for every active GUI runtime in tools/parity/parity-manifest.json. Active runtimes list requiredFixtures: ["embedded-surface"] and supportedFeatures: ["embeddedDocuments"]; the semantic report prints both so a runtime cannot quietly fall out of the contract. Runtime entries also use expectedSourceSymbols for the renderer files that must contain the slot lowering path, so a runtime cannot keep a green body merely because its source file exists. The shared fixture is web/fixtures/cultui-embedded-surface.json, and renderer-specific tests should load that fixture rather than hand-authoring a local substitute.

Runtime Status

The harness tracks every target runtime:

• Web reference: active semantic and screenshot target through Chrome headless using the provider query parameter. Required nested-surface evidence: node --test web\eve-dsl.test.mjs plus the embedded-surface fixture in tools/parity/run-parity.mjs.
• Web responsive layout: Chrome headless emits phone, tablet, and desktop PNGs.
• iOS / UIKit: screenshot target through SSH and EveCanvas' /var/mobile/Library/EveCanvas/capture-request service. Current iOS capture is fixed-device until a simulator or device-resize adapter exists. Required nested-surface evidence: run scripts/run-parity-smoke.ps1 -ProviderId gamecult.eve.embedded-demo against the device target.
• Windows / Flutter: screenshot target through the Flutter parity golden smoke, with phone, tablet, and desktop goldens. Required nested-surface evidence: flutter test --plain-name embedded_surface_fixture_contract plus scripts/capture-flutter-parity.ps1 -FixtureId gamecult.eve.embedded-demo.
• Linux / Flutter: screenshot target through Nightwing over SSH. The smoke stages flutter/eve_parity, runs Flutter goldens on Nightwing, and pulls back phone, tablet, and desktop PNGs. Required nested-surface evidence: scripts/capture-linux-flutter-parity.ps1 -FixtureId gamecult.eve.embedded-demo.
• Android / Flutter: screenshot target through the same Flutter renderer, packaged as a debug APK, installed on Periwinkle through adb, and captured with optional adb shell wm size, orientation control, and adb exec-out screencap; the script restores device size and rotation after each viewport. Required nested-surface evidence: scripts/capture-android-flutter-parity.ps1 -FixtureId gamecult.eve.embedded-demo.
• Android / Kotlin device edge: lightweight native CultMesh dashboard and sensor host. Required nested-surface evidence: android/app/src/main/java/org/gamecult/eve/MainActivity.kt renders surface.slot with a content description containing the embedded slot identity, and node tools/parity/run-parity.mjs reports embeddedDocuments support for android-kotlin. It does not consume plugin fixtures until EveAndroid grows a plugin projection adapter; Android Flutter is the Android-side plugin projection acceptance target. Kotlin declares styleTokens only after proving token-aware text roles, text-size parsing, and fontBody / fontTitle / fontMono typeface mapping in MainActivity.kt.
• Rust / CultMesh: typed document runtime rather than a CultUI renderer. Required nested-surface evidence: cargo test -p cultnet-rs rust_preserves_cultui_embedded_surface_slots_through_typed_document_sync in CultLib.
• Fensalir Direct2D: specialized native target with a runtime-pack gamecult.eve.surface.v1 adapter fixture; runtime-owned command smoke and Direct2D capture are still missing.

Pending runtimes are allowed. Silent fake parity is not.

Next Cuts

1. Extend runtime-owned image/layout probes to the Unity/Electron capture blockers with actual owner-produced image artifacts and move EveTui's JSON grid capture path into the EveTui owner repo.
2. Normalize text scale and font loading across web, Flutter Android, Flutter desktop, and iOS.
3. Give iOS a real vn.stage scene compositor instead of compact stacked fixture lowering.
4. Replace Flutter golden screenshots with native window captures once the Flutter app body can emit a desktop frame without test harness help.
5. Add Direct2D frame capture once the Eve-to-AquariumUiDocument adapter exists.