diff --git a/.changeset/crisp-seams-align.md b/.changeset/crisp-seams-align.md
new file mode 100644
index 000000000..15d6e0fe9
--- /dev/null
+++ b/.changeset/crisp-seams-align.md
@@ -0,0 +1,5 @@
+---
+type: Changed
+pr: 3419
+---
+SDK query compatibility now routes `write-profile` default path and query CLI fallback/error imports through explicit package-seam adapters, reducing install-layout coupling outside `sdk-package-compatibility`.
diff --git a/sdk/src/query/profile-output.ts b/sdk/src/query/profile-output.ts
index 20c7f5719..c4dde98b3 100644
--- a/sdk/src/query/profile-output.ts
+++ b/sdk/src/query/profile-output.ts
@@ -19,7 +19,7 @@ import { GSDError, ErrorClassification } from '../errors.js';
 import { detectRuntime, resolveGlobalSkillMarkdownPath } from './helpers.js';
 import { CLAUDE_INSTRUCTIONS } from './profile-questionnaire-data.js';
 import type { QueryHandler } from './utils.js';
-import { resolveBundledTemplatesDir } from '../sdk-package-compatibility.js';
+import { resolveBundledTemplatesDir, resolveLegacyUserProfilePath } from '../sdk-package-compatibility.js';
 
 const TEMPLATE_DIR = resolveBundledTemplatesDir();
 
@@ -482,7 +482,7 @@ function cmdWriteProfileLogic(
 
   let outputPath = options.output;
   if (!outputPath) {
-    outputPath = join(homedir(), '.claude', 'get-shit-done', 'USER-PROFILE.md');
+    outputPath = resolveLegacyUserProfilePath();
   } else if (!isAbsolute(outputPath)) {
     outputPath = join(cwd, outputPath);
   }
diff --git a/sdk/src/query/query-cli-adapter.test.ts b/sdk/src/query/query-cli-adapter.test.ts
index 3d06d4163..c3074d1a9 100644
--- a/sdk/src/query/query-cli-adapter.test.ts
+++ b/sdk/src/query/query-cli-adapter.test.ts
@@ -2,6 +2,7 @@ import { beforeEach, describe, expect, it, vi } from 'vitest';
 
 const dispatchSpy = vi.hoisted(() => vi.fn());
 const runQueryDispatchSpy = vi.hoisted(() => vi.fn());
+const resolveGsdToolsPathSeamSpy = vi.hoisted(() => vi.fn(() => '/mock/gsd-tools.cjs'));
 
 vi.mock('./helpers.js', () => ({
   findProjectRoot: (projectDir: string) => projectDir,
@@ -15,12 +16,18 @@ vi.mock('./query-dispatch.js', () => ({
   runQueryDispatch: (...args: unknown[]) => runQueryDispatchSpy(...args),
 }));
 
+vi.mock('../query-gsd-tools-path.js', () => ({
+  resolveGsdToolsPath: (...args: unknown[]) => resolveGsdToolsPathSeamSpy(...args),
+}));
+
 import { runQueryCliCommand } from './query-cli-adapter.js';
 
 describe('query-cli-adapter', () => {
   beforeEach(() => {
     dispatchSpy.mockReset();
     runQueryDispatchSpy.mockReset();
+    resolveGsdToolsPathSeamSpy.mockReset();
+    resolveGsdToolsPathSeamSpy.mockReturnValue('/mock/gsd-tools.cjs');
   });
 
   it('returns validation failure for missing query command', async () => {
@@ -55,4 +62,18 @@ describe('query-cli-adapter', () => {
       queryArgv: ['state', 'show'],
     });
   });
+
+  it('wires resolveGsdToolsPath from the query seam module', async () => {
+    runQueryDispatchSpy.mockImplementationOnce(async (input: any) => {
+      expect(typeof input.resolveGsdToolsPath).toBe('function');
+      expect(input.resolveGsdToolsPath('/tmp/project')).toBe('/mock/gsd-tools.cjs');
+      expect(resolveGsdToolsPathSeamSpy).toHaveBeenCalledWith('/tmp/project');
+      return { ok: true, exit_code: 0, stdout: '', stderr: [] };
+    });
+
+    await runQueryCliCommand({
+      projectDir: process.cwd(),
+      queryArgv: ['state', 'show'],
+    });
+  });
 });
diff --git a/sdk/src/query/query-cli-adapter.ts b/sdk/src/query/query-cli-adapter.ts
index a993a0678..5ad124a01 100644
--- a/sdk/src/query/query-cli-adapter.ts
+++ b/sdk/src/query/query-cli-adapter.ts
@@ -1,6 +1,6 @@
 import { createRegistry } from './index.js';
 import { runQueryDispatch } from './query-dispatch.js';
-import { resolveGsdToolsPath } from '../gsd-tools.js';
+import { resolveGsdToolsPath } from '../query-gsd-tools-path.js';
 import { resolveQueryRuntimeContext } from './query-runtime-context.js';
 import { createCommandTopology } from './command-topology.js';
 import { buildQueryCliOutputFromDispatch, buildQueryCliOutputFromError, type QueryCliAdapterOutput } from './query-cli-output.js';
diff --git a/sdk/src/query/query-cli-output.test.ts b/sdk/src/query/query-cli-output.test.ts
index eedbffeee..b3adbb553 100644
--- a/sdk/src/query/query-cli-output.test.ts
+++ b/sdk/src/query/query-cli-output.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest';
-import { GSDToolsError } from '../gsd-tools.js';
+import { GSDToolsError } from '../gsd-tools-error.js';
 import { buildQueryCliOutputFromError } from './query-cli-output.js';
 
 describe('query-cli-output', () => {
diff --git a/sdk/src/query/query-cli-output.ts b/sdk/src/query/query-cli-output.ts
index 0a9c22ad6..f050ff1d2 100644
--- a/sdk/src/query/query-cli-output.ts
+++ b/sdk/src/query/query-cli-output.ts
@@ -1,5 +1,5 @@
 import { GSDError, exitCodeFor } from '../errors.js';
-import { GSDToolsError } from '../gsd-tools.js';
+import { GSDToolsError } from '../gsd-tools-error.js';
 import type { QueryDispatchResult } from './query-dispatch-contract.js';
 
 export interface QueryCliAdapterOutput {
diff --git a/sdk/src/sdk-package-compatibility.test.ts b/sdk/src/sdk-package-compatibility.test.ts
index f8ad68460..785c98d89 100644
--- a/sdk/src/sdk-package-compatibility.test.ts
+++ b/sdk/src/sdk-package-compatibility.test.ts
@@ -12,6 +12,7 @@ import {
   resolveBundledTemplatesDir,
   resolveGsdToolsPath,
   resolveLegacyInstallDir,
+  resolveLegacyUserProfilePath,
   resolveLegacyTemplatesDir,
   resolveLegacyWorkflowsDir,
 } from './sdk-package-compatibility.js';
@@ -25,6 +26,7 @@ describe('SDK Package Seam Module', () => {
     expect(resolveLegacyInstallDir(homeDir)).toBe(join(homeDir, '.claude', 'get-shit-done'));
     expect(resolveLegacyTemplatesDir(homeDir)).toBe(join(homeDir, '.claude', 'get-shit-done', 'templates'));
     expect(resolveLegacyWorkflowsDir(homeDir)).toBe(join(homeDir, '.claude', 'get-shit-done', 'workflows'));
+    expect(resolveLegacyUserProfilePath(homeDir)).toBe(join(homeDir, '.claude', 'get-shit-done', 'USER-PROFILE.md'));
     expect(resolveBundledTemplatesDir()).toBe(BUNDLED_GSD_TEMPLATES_DIR);
     expect(resolveBundledAgentsDir()).toBe(BUNDLED_GSD_AGENTS_DIR);
   });
diff --git a/sdk/src/sdk-package-compatibility.ts b/sdk/src/sdk-package-compatibility.ts
index b72ece392..bf83a01f7 100644
--- a/sdk/src/sdk-package-compatibility.ts
+++ b/sdk/src/sdk-package-compatibility.ts
@@ -58,6 +58,10 @@ export function resolveLegacyWorkflowsDir(homeDir: string = homedir()): string {
   return join(resolveLegacyInstallDir(homeDir), 'workflows');
 }
 
+export function resolveLegacyUserProfilePath(homeDir: string = homedir()): string {
+  return join(resolveLegacyInstallDir(homeDir), 'USER-PROFILE.md');
+}
+
 export function resolveLegacySkillsDir(homeDir: string = homedir()): string {
   return join(resolveLegacyInstallDir(homeDir), 'skills');
 }