diff --git a/.changeset/automation-schema-resolver-e2e.md b/.changeset/automation-schema-resolver-e2e.md
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+++ b/.changeset/automation-schema-resolver-e2e.md
@@ -0,0 +1,13 @@
+---
+"@objectstack/service-automation": patch
+---
+
+test(automation): end-to-end coverage for the #1928 object-schema resolver wiring
+
+Adds a kernel-level integration test proving `AutomationServicePlugin` bridges
+the engine's object-schema resolver to the live `objectql.registry.getObject` at
+`start()` (fields + types resolved from the registry), and that a flow
+registered through the running kernel with a text field misused in arithmetic
+emits the tier-4 advisory — while a sound condition stays quiet. Locks in the
+production integration point that the engine-level unit tests (which set the
+resolver by hand) could not exercise. Test-only; no behavior change.
diff --git a/packages/services/service-automation/src/flow-registration-schema-e2e.test.ts b/packages/services/service-automation/src/flow-registration-schema-e2e.test.ts
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+++ b/packages/services/service-automation/src/flow-registration-schema-e2e.test.ts
@@ -0,0 +1,111 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import { LiteKernel } from '@objectstack/core';
+import type { Plugin, PluginContext } from '@objectstack/core';
+
+import { AutomationServicePlugin } from './plugin.js';
+import type { AutomationEngine } from './engine.js';
+
+/**
+ * End-to-end coverage for the #1928 production wiring: `AutomationServicePlugin`
+ * must, at `start()`, bridge the engine's object-schema resolver to the live
+ * `objectql.registry.getObject`. The engine-level tests set the resolver by
+ * hand; this proves the PLUGIN actually wires it from a real service and that a
+ * flow registered through the running kernel gets the schema-aware advisory.
+ *
+ * A minimal fake `objectql` plugin supplies `registry.getObject` — the exact
+ * seam the plugin consumes. Bootstrap runs every `init()` before any `start()`,
+ * so the service is present when automation's `start()` looks it up.
+ */
+function fakeObjectqlPlugin(): Plugin {
+  return {
+    name: 'fake-objectql',
+    version: '1.0.0',
+    async init(ctx: PluginContext) {
+      (ctx as unknown as { registerService(name: string, svc: unknown): void }).registerService('objectql', {
+        registry: {
+          getObject: (name: string) =>
+            name === 'crm_opportunity'
+              ? {
+                  name,
+                  fields: {
+                    amount: { type: 'currency' },
+                    title: { type: 'text' },
+                    is_active: { type: 'boolean' },
+                    stage: { type: 'select' },
+                  },
+                }
+              : undefined,
+        },
+      });
+    },
+  };
+}
+
+const oppFlow = (condition: string) => ({
+  name: 'opp_flow',
+  label: 'Opportunity Flow',
+  type: 'record_change',
+  nodes: [
+    { id: 'start', type: 'start', label: 'Start', config: { objectName: 'crm_opportunity' } },
+    { id: 'check', type: 'decision', label: 'Check', config: { condition } },
+    { id: 'end', type: 'end', label: 'End' },
+  ],
+  edges: [
+    { id: 'e1', source: 'start', target: 'check' },
+    { id: 'e2', source: 'check', target: 'end' },
+  ],
+});
+
+describe('AutomationServicePlugin — object-schema resolver wired end-to-end (#1928)', () => {
+  let kernel: LiteKernel;
+  let engine: AutomationEngine;
+  let stdout: string[];
+  let stdoutSpy: ReturnType<typeof vi.spyOn>;
+
+  beforeEach(async () => {
+    stdout = [];
+    // `warn` logs go to process.stdout (non-error level); capture without
+    // forwarding so we can assert on the registration advisory.
+    stdoutSpy = vi.spyOn(process.stdout, 'write').mockImplementation(((chunk: unknown) => {
+      stdout.push(String(chunk));
+      return true;
+    }) as never);
+    kernel = new LiteKernel();
+    kernel.use(fakeObjectqlPlugin());
+    kernel.use(new AutomationServicePlugin());
+    await kernel.bootstrap();
+    engine = kernel.getService('automation') as AutomationEngine;
+  });
+
+  afterEach(async () => {
+    stdoutSpy.mockRestore();
+    await kernel.shutdown();
+  });
+
+  it('bridges the resolver to objectql.registry.getObject (fields + types)', () => {
+    const resolver = (engine as unknown as { objectSchemaResolver: ((n: string) => unknown) | null })
+      .objectSchemaResolver;
+    expect(typeof resolver).toBe('function');
+    const schema = resolver!('crm_opportunity') as { fields: string[]; fieldTypes: Record<string, string> };
+    expect(schema.fields.slice().sort()).toEqual(['amount', 'is_active', 'stage', 'title']);
+    expect(schema.fieldTypes).toMatchObject({ amount: 'currency', title: 'text', is_active: 'boolean' });
+    expect(resolver!('does_not_exist')).toBeUndefined();
+  });
+
+  it('emits a tier-4 advisory when a registered flow does arithmetic on a text field', () => {
+    stdout.length = 0;
+    expect(() => engine.registerFlow('opp_flow', oppFlow('title * 2 > 10'))).not.toThrow();
+    const logged = stdout.join('');
+    expect(logged).toMatch(/type mismatch/i);
+    expect(logged).toMatch(/title/);
+  });
+
+  it('emits no schema advisory for a sound flow condition', () => {
+    stdout.length = 0;
+    engine.registerFlow('opp_flow_ok', oppFlow('stage == "won" && amount > 1000'));
+    const logged = stdout.join('');
+    expect(logged).not.toMatch(/type mismatch|did you mean|unknown field/i);
+  });
+});