diff --git a/docs/eve-migration-roadmap.md b/docs/eve-migration-roadmap.md
index f1ad25e..8afa1b7 100644
--- a/docs/eve-migration-roadmap.md
+++ b/docs/eve-migration-roadmap.md
@@ -437,6 +437,11 @@ Recently cut:
   wrapped and validated through the same schema, and the conformance export
   carries `lifecycleManifestPath` plus `lifecycleErrors` so runtime owners can
   consume lifecycle status without guessing from prose.
+- Electron and TUI provider-shell outputs are now schema-backed as
+  `gamecult.eve.electron_shell_projection.v1` and
+  `gamecult.eve.tui_grid.v1`. Their runtime tests load the schema documents and
+  validate actual lowered projection objects, so Electron and TUI cannot claim
+  generic provider-shell lowering by string constant alone.
 - EveElectron now has a pending split target and handoff at
   `runtimes/incubating/eve-electron/eveelectron-split-handoff.json`. It does
   claim a provider-agnostic Electron shell surface-tree projection and command
diff --git a/docs/parity-testing-harness.md b/docs/parity-testing-harness.md
index dc7fd79..9f177bf 100644
--- a/docs/parity-testing-harness.md
+++ b/docs/parity-testing-harness.md
@@ -228,6 +228,10 @@ 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
diff --git a/runtimes/incubating/eve-electron/test/eve-electron-shell.test.mjs b/runtimes/incubating/eve-electron/test/eve-electron-shell.test.mjs
index 0047db7..d038351 100644
--- a/runtimes/incubating/eve-electron/test/eve-electron-shell.test.mjs
+++ b/runtimes/incubating/eve-electron/test/eve-electron-shell.test.mjs
@@ -1,7 +1,17 @@
 import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import path from "node:path";
 import test from "node:test";
+import { fileURLToPath } from "node:url";
+import { validateSchemaSubset } from "../../test-support/schema-subset.mjs";
 import { EveElectronShell } from "../src/eve-electron-shell.mjs";
 
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../../../..");
+const electronProjectionSchema = JSON.parse(readFileSync(
+  path.join(repoRoot, "schemas/gamecult.eve.electron_shell_projection.v1.schema.json"),
+  "utf8",
+));
+
 test("selects the active advertised provider surface", () => {
   const shell = new EveElectronShell();
   const selected = shell.selectSurface(advertisement(), "aetheria.daemon.editor");
@@ -40,6 +50,7 @@ test("lowers provider surface trees into an Electron shell projection", () => {
   const shell = new EveElectronShell();
   const projection = shell.lowerSurface(surfaceDocument(), advertisement(), "aetheria.daemon.game");
 
+  assert.deepEqual(validateSchemaSubset(electronProjectionSchema, projection), []);
   assert.equal(projection.schema, "gamecult.eve.electron_shell_projection.v1");
   assert.equal(projection.providerId, "aetheria");
   assert.equal(projection.surfaceId, "aetheria.daemon.game");
diff --git a/runtimes/incubating/eve-tui/test/eve-tui-shell.test.mjs b/runtimes/incubating/eve-tui/test/eve-tui-shell.test.mjs
index d480395..3be97a0 100644
--- a/runtimes/incubating/eve-tui/test/eve-tui-shell.test.mjs
+++ b/runtimes/incubating/eve-tui/test/eve-tui-shell.test.mjs
@@ -1,7 +1,17 @@
 import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import path from "node:path";
 import test from "node:test";
+import { fileURLToPath } from "node:url";
+import { validateSchemaSubset } from "../../test-support/schema-subset.mjs";
 import { EveTuiShell } from "../src/eve-tui-shell.mjs";
 
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../../../..");
+const tuiGridSchema = JSON.parse(readFileSync(
+  path.join(repoRoot, "schemas/gamecult.eve.tui_grid.v1.schema.json"),
+  "utf8",
+));
+
 test("selects advertised provider surfaces for compact projection", () => {
   const shell = new EveTuiShell({ width: 48 });
   const selected = shell.selectSurface(advertisement(), "aetheria.daemon.editor");
@@ -40,6 +50,7 @@ test("summary grid is explicitly lossy provider-shell evidence", () => {
   const shell = new EveTuiShell({ width: 36 });
   const grid = shell.renderSummary(advertisement(), "aetheria.daemon.game");
 
+  assert.deepEqual(validateSchemaSubset(tuiGridSchema, grid), []);
   assert.equal(grid.schema, "gamecult.eve.tui_grid.v1");
   assert.equal(grid.runtimeId, "tui");
   assert.equal(grid.surfaceId, "aetheria.daemon.game");
@@ -51,6 +62,7 @@ test("lowers provider surface trees into a terminal grid", () => {
   const shell = new EveTuiShell({ width: 44 });
   const grid = shell.lowerSurface(surfaceDocument(), advertisement(), "aetheria.daemon.game");
 
+  assert.deepEqual(validateSchemaSubset(tuiGridSchema, grid), []);
   assert.equal(grid.schema, "gamecult.eve.tui_grid.v1");
   assert.equal(grid.runtimeId, "tui");
   assert.equal(grid.providerId, "aetheria");
diff --git a/runtimes/incubating/test-support/schema-subset.mjs b/runtimes/incubating/test-support/schema-subset.mjs
new file mode 100644
index 0000000..e2484f8
--- /dev/null
+++ b/runtimes/incubating/test-support/schema-subset.mjs
@@ -0,0 +1,53 @@
+export function validateSchemaSubset(schema, value, pointer = "$") {
+  const errors = [];
+  if (!schema || typeof schema !== "object") return errors;
+
+  if (schema.const !== undefined && value !== schema.const) {
+    errors.push(`${pointer}:const:${schema.const}`);
+  }
+  if (schema.type && !matchesSchemaType(value, schema.type)) {
+    errors.push(`${pointer}:type:${schema.type}`);
+    return errors;
+  }
+  if (schema.minLength !== undefined && typeof value === "string" && value.length < schema.minLength) {
+    errors.push(`${pointer}:minLength:${schema.minLength}`);
+  }
+  if (schema.minItems !== undefined && Array.isArray(value) && value.length < schema.minItems) {
+    errors.push(`${pointer}:minItems:${schema.minItems}`);
+  }
+  if (schema.required && value && typeof value === "object" && !Array.isArray(value)) {
+    for (const key of schema.required) {
+      if (value[key] === undefined) errors.push(`${pointer}.${key}:required`);
+    }
+  }
+  if (schema.properties && value && typeof value === "object" && !Array.isArray(value)) {
+    for (const [key, childSchema] of Object.entries(schema.properties)) {
+      if (value[key] !== undefined) {
+        errors.push(...validateSchemaSubset(childSchema, value[key], `${pointer}.${key}`));
+      }
+    }
+  }
+  if (schema.items && Array.isArray(value)) {
+    value.forEach((item, index) => {
+      errors.push(...validateSchemaSubset(schema.items, item, `${pointer}[${index}]`));
+    });
+  }
+  return errors;
+}
+
+function matchesSchemaType(value, type) {
+  switch (type) {
+    case "array":
+      return Array.isArray(value);
+    case "object":
+      return value !== null && typeof value === "object" && !Array.isArray(value);
+    case "string":
+      return typeof value === "string";
+    case "number":
+      return typeof value === "number";
+    case "boolean":
+      return typeof value === "boolean";
+    default:
+      return true;
+  }
+}
diff --git a/schemas/gamecult.eve.electron_shell_projection.v1.schema.json b/schemas/gamecult.eve.electron_shell_projection.v1.schema.json
new file mode 100644
index 0000000..b4edf2b
--- /dev/null
+++ b/schemas/gamecult.eve.electron_shell_projection.v1.schema.json
@@ -0,0 +1,93 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "gamecult.eve.electron_shell_projection.v1",
+  "title": "Eve Electron Shell Projection",
+  "type": "object",
+  "required": [
+    "type",
+    "schema",
+    "providerId",
+    "surfaceId",
+    "projectionKind",
+    "commandBoundary",
+    "receiptSchema",
+    "ownership",
+    "root"
+  ],
+  "properties": {
+    "type": {
+      "const": "electron-shell-projection"
+    },
+    "schema": {
+      "const": "gamecult.eve.electron_shell_projection.v1"
+    },
+    "providerId": {
+      "type": "string",
+      "minLength": 1
+    },
+    "surfaceId": {
+      "type": "string",
+      "minLength": 1
+    },
+    "projectionKind": {
+      "type": "string",
+      "minLength": 1
+    },
+    "commandBoundary": {
+      "type": "string",
+      "minLength": 1
+    },
+    "receiptSchema": {
+      "type": "string",
+      "minLength": 1
+    },
+    "ownership": {
+      "type": "string",
+      "minLength": 1
+    },
+    "root": {
+      "type": "object",
+      "required": [
+        "id",
+        "componentKind",
+        "shellElementKind",
+        "stateBindingCount",
+        "embeddedDocumentCount",
+        "children"
+      ],
+      "properties": {
+        "id": {
+          "type": "string",
+          "minLength": 1
+        },
+        "componentKind": {
+          "type": "string"
+        },
+        "shellElementKind": {
+          "type": "string",
+          "minLength": 1
+        },
+        "props": {
+          "type": "object"
+        },
+        "layout": {
+          "type": "object"
+        },
+        "style": {
+          "type": "object"
+        },
+        "stateBindingCount": {
+          "type": "number"
+        },
+        "embeddedDocumentCount": {
+          "type": "number"
+        },
+        "children": {
+          "type": "array"
+        }
+      },
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true
+}
diff --git a/schemas/gamecult.eve.tui_grid.v1.schema.json b/schemas/gamecult.eve.tui_grid.v1.schema.json
new file mode 100644
index 0000000..dae985e
--- /dev/null
+++ b/schemas/gamecult.eve.tui_grid.v1.schema.json
@@ -0,0 +1,58 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "gamecult.eve.tui_grid.v1",
+  "title": "Eve TUI Grid",
+  "type": "object",
+  "required": [
+    "schema",
+    "runtimeId",
+    "providerId",
+    "surfaceId",
+    "width",
+    "lines",
+    "lossiness"
+  ],
+  "properties": {
+    "schema": {
+      "const": "gamecult.eve.tui_grid.v1"
+    },
+    "runtimeId": {
+      "const": "tui"
+    },
+    "providerId": {
+      "type": "string",
+      "minLength": 1
+    },
+    "surfaceId": {
+      "type": "string",
+      "minLength": 1
+    },
+    "projectionKind": {
+      "type": "string"
+    },
+    "commandBoundary": {
+      "type": "string"
+    },
+    "receiptSchema": {
+      "type": "string"
+    },
+    "ownership": {
+      "type": "string"
+    },
+    "width": {
+      "type": "number"
+    },
+    "lines": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "string"
+      }
+    },
+    "lossiness": {
+      "type": "string",
+      "minLength": 1
+    }
+  },
+  "additionalProperties": true
+}
diff --git a/scripts/run-conformance-consumer-smoke.ps1 b/scripts/run-conformance-consumer-smoke.ps1
index 35d249b..44b6c25 100644
--- a/scripts/run-conformance-consumer-smoke.ps1
+++ b/scripts/run-conformance-consumer-smoke.ps1
@@ -45,6 +45,8 @@ try {
     --expect-schema gamecult.eve.runtime_split_handoff.v1 `
     --expect-schema gamecult.eve.plugin_handoff.v1 `
     --expect-schema gamecult.eve.provider_handoff.v1 `
+    --expect-schema gamecult.eve.electron_shell_projection.v1 `
+    --expect-schema gamecult.eve.tui_grid.v1 `
     --expect-capability-gap runtime:Fensalir:direct2d:capture:missing `
     --expect-world-lowering-coverage aetheria:aetheria.daemon.game:web-reference:claimed:Eve:web `
     --expect-world-lowering-coverage aetheria:aetheria.daemon.game:unity-uitoolkit:claimed:EveUnity:unity-uitoolkit `
diff --git a/scripts/run-eveconformance-handoff-smoke.ps1 b/scripts/run-eveconformance-handoff-smoke.ps1
index d238873..49835c6 100644
--- a/scripts/run-eveconformance-handoff-smoke.ps1
+++ b/scripts/run-eveconformance-handoff-smoke.ps1
@@ -90,6 +90,8 @@ foreach ($contract in @(
   "gamecult.eve.runtime_capture_request.v1",
   "gamecult.eve.provider_advertisement.v1",
   "gamecult.eve.provider_handoff.v1",
+  "gamecult.eve.electron_shell_projection.v1",
+  "gamecult.eve.tui_grid.v1",
   "gamecult.eve.runtime_capability.v1",
   "gamecult.eve.runtime_lifecycle.v1",
   "gamecult.eve.runtime_split_handoff.v1"
@@ -124,6 +126,8 @@ if (Test-Path -LiteralPath (Join-Path $absoluteExportDirectory "index.json")) {
     "gamecult.eve.provider_scenario.v1",
     "gamecult.eve.provider_advertisement.v1",
     "gamecult.eve.provider_handoff.v1",
+    "gamecult.eve.electron_shell_projection.v1",
+    "gamecult.eve.tui_grid.v1",
     "gamecult.eve.runtime_capability.v1",
     "gamecult.eve.runtime_lifecycle.v1",
     "gamecult.eve.runtime_split_handoff.v1",
diff --git a/scripts/run-runtime-owner-conformance-consumer-smoke.ps1 b/scripts/run-runtime-owner-conformance-consumer-smoke.ps1
index b815908..27b92f2 100644
--- a/scripts/run-runtime-owner-conformance-consumer-smoke.ps1
+++ b/scripts/run-runtime-owner-conformance-consumer-smoke.ps1
@@ -45,6 +45,8 @@ node $consumerScript $consumerExport `
   --expect-schema gamecult.eve.runtime_capture_request.v1 `
   --expect-schema gamecult.eve.runtime_lifecycle.v1 `
   --expect-schema gamecult.eve.runtime_split_handoff.v1 `
+  --expect-schema gamecult.eve.electron_shell_projection.v1 `
+  --expect-schema gamecult.eve.tui_grid.v1 `
   --expect-runtime-status web:active `
   --expect-runtime-status windows-flutter:active `
   --expect-runtime-status linux-flutter:active `
diff --git a/tools/conformance/eveconformance-handoff.json b/tools/conformance/eveconformance-handoff.json
index 681a514..280bd52 100644
--- a/tools/conformance/eveconformance-handoff.json
+++ b/tools/conformance/eveconformance-handoff.json
@@ -26,6 +26,8 @@
         "schemas/gamecult.eve.provider_scenario.v1.schema.json",
         "schemas/gamecult.eve.provider_advertisement.v1.schema.json",
         "schemas/gamecult.eve.provider_handoff.v1.schema.json",
+        "schemas/gamecult.eve.electron_shell_projection.v1.schema.json",
+        "schemas/gamecult.eve.tui_grid.v1.schema.json",
         "schemas/gamecult.eve.runtime_capability.v1.schema.json",
         "schemas/gamecult.eve.runtime_lifecycle.v1.schema.json",
         "schemas/gamecult.eve.runtime_split_handoff.v1.schema.json",
@@ -88,6 +90,8 @@
     "gamecult.eve.runtime_capture_request.v1",
     "gamecult.eve.provider_advertisement.v1",
     "gamecult.eve.provider_handoff.v1",
+    "gamecult.eve.electron_shell_projection.v1",
+    "gamecult.eve.tui_grid.v1",
     "gamecult.eve.runtime_capability.v1",
     "gamecult.eve.runtime_lifecycle.v1",
     "gamecult.eve.runtime_split_handoff.v1"
diff --git a/tools/parity/parity-manifest.json b/tools/parity/parity-manifest.json
index e2cec32..712eb83 100644
--- a/tools/parity/parity-manifest.json
+++ b/tools/parity/parity-manifest.json
@@ -27,7 +27,9 @@
     "gamecult.eve.provider_scenario.v1": "schemas/gamecult.eve.provider_scenario.v1.schema.json",
     "gamecult.eve.provider_advertisement.v1": "schemas/gamecult.eve.provider_advertisement.v1.schema.json",
     "gamecult.eve.provider_handoff.v1": "schemas/gamecult.eve.provider_handoff.v1.schema.json",
-    "gamecult.eve.conformance_handoff.v1": "schemas/gamecult.eve.conformance_handoff.v1.schema.json"
+    "gamecult.eve.conformance_handoff.v1": "schemas/gamecult.eve.conformance_handoff.v1.schema.json",
+    "gamecult.eve.electron_shell_projection.v1": "schemas/gamecult.eve.electron_shell_projection.v1.schema.json",
+    "gamecult.eve.tui_grid.v1": "schemas/gamecult.eve.tui_grid.v1.schema.json"
   },
   "conformancePacks": [
     {