diff --git a/src/harness/application/actions/workflowActionService.ts b/src/harness/application/actions/workflowActionService.ts
index 801317e8..b654b2a2 100644
--- a/src/harness/application/actions/workflowActionService.ts
+++ b/src/harness/application/actions/workflowActionService.ts
@@ -12,7 +12,7 @@ import {
 } from '../workflow';
 
 import { HarnessPolicyBlockedError } from '../policies/policyService';
-import { resolveRuntimeLayout } from '../../../shared/fs/pathHelpers';
+import { resolveRuntimeLayout, toPosixContextPath } from '../../../shared/fs/pathHelpers';
 import type { HarnessWorkflowGuideInput } from '../workflow/workflowGuideTypes';
 
 export interface HarnessWorkflowInitInput {
@@ -62,7 +62,7 @@ export class HarnessWorkflowActionService {
       archivePrevious: params.archive_previous,
     });
 
-    const workflowStatePath = resolveRuntimeLayout(contextPath).prevcFile;
+    const workflowStatePath = toPosixContextPath(resolveRuntimeLayout(contextPath).prevcFile);
     const settings = await service.getSettings();
     const scale = getScaleName(status.project.scale as ProjectScale);
     const isAutonomous = settings.autonomous_mode;
@@ -131,13 +131,13 @@ export class HarnessWorkflowActionService {
         error: 'No workflow found. Initialize a workflow first.',
         suggestion: 'Use workflow-init({ name: "feature-name" }) to start.',
         note: 'Workflows enable structured PREVC phases. Skip for trivial changes.',
-        workflowStatePath: resolveRuntimeLayout(contextPath).prevcFile,
+        workflowStatePath: toPosixContextPath(resolveRuntimeLayout(contextPath).prevcFile),
       };
     }
 
     const summary = await service.getSummary();
     const status = await service.getStatus();
-    const workflowStatePath = resolveRuntimeLayout(contextPath).prevcFile;
+    const workflowStatePath = toPosixContextPath(resolveRuntimeLayout(contextPath).prevcFile);
     const orchestration = await service.getPhaseOrchestration(summary.currentPhase);
     const harness = await service.getHarnessStatus();
 
@@ -170,7 +170,7 @@ export class HarnessWorkflowActionService {
         success: false,
         error: 'No workflow found. Initialize a workflow first.',
         suggestion: 'Use workflow-init({ name: "feature-name" }) to start.',
-        workflowStatePath: resolveRuntimeLayout(contextPath).prevcFile,
+        workflowStatePath: toPosixContextPath(resolveRuntimeLayout(contextPath).prevcFile),
       };
     }
 
diff --git a/src/harness/application/context/contextTools.ts b/src/harness/application/context/contextTools.ts
index 03945c34..26e946ef 100644
--- a/src/harness/application/context/contextTools.ts
+++ b/src/harness/application/context/contextTools.ts
@@ -348,11 +348,11 @@ export const listFilesTool = createInternalTool<
   async (input) => {
     const { pattern, cwd, ignore } = input;
     try {
-      const files = await glob(pattern, {
+      const files = (await glob(pattern, {
         cwd: cwd || process.cwd(),
         ignore: ignore || ['node_modules/**', '.git/**', 'dist/**'],
         absolute: false
-      });
+      })).map((file) => file.split(path.sep).join('/'));
       return {
         success: true,
         files,
diff --git a/src/harness/application/workflow/plansService.ts b/src/harness/application/workflow/plansService.ts
index dea0614a..714c94bd 100644
--- a/src/harness/application/workflow/plansService.ts
+++ b/src/harness/application/workflow/plansService.ts
@@ -15,7 +15,7 @@ import {
 } from '../../domain/workflow/plans';
 import { PrevcStatusManager } from '../../domain/workflow/status/statusManager';
 import { GitService } from '../../../utils/gitService';
-import { resolveRuntimeLayoutFromRepo } from '../../../shared/fs/pathHelpers';
+import { resolveRuntimeLayoutFromRepo, toPosixContextPath } from '../../../shared/fs/pathHelpers';
 import type { PrevcPhase } from '../../domain/workflow/types';
 
 export interface HarnessPlansServiceOptions {
@@ -87,7 +87,7 @@ export class HarnessPlansService {
       canAdvanceToReview = gateResult.gates.plan_required.passed;
     }
 
-    const workflowStatePath = resolveRuntimeLayoutFromRepo(this.repoPath).prevcFile;
+    const workflowStatePath = toPosixContextPath(resolveRuntimeLayoutFromRepo(this.repoPath).prevcFile);
     const enhancementPrompt = workflowActive
       ? `PLAN LINKED TO ACTIVE WORKFLOW
 
diff --git a/src/shared/fs/pathHelpers.ts b/src/shared/fs/pathHelpers.ts
index ba5f8b3d..a8694956 100644
--- a/src/shared/fs/pathHelpers.ts
+++ b/src/shared/fs/pathHelpers.ts
@@ -245,6 +245,13 @@ export async function isFile(targetPath: string): Promise<boolean> {
   }
 }
 
+/**
+ * Normalize an absolute path for cross-platform API responses (forward slashes).
+ */
+export function toPosixContextPath(absolutePath: string): string {
+  return absolutePath.split(path.sep).join('/');
+}
+
 /**
  * Normalize path separators to forward slashes
  */
diff --git a/src/utils/splashScreen.ts b/src/utils/splashScreen.ts
index 53911c8f..170654fe 100644
--- a/src/utils/splashScreen.ts
+++ b/src/utils/splashScreen.ts
@@ -60,8 +60,8 @@ export function formatSplashDirectory(directory: string, maxLength = 48): string
   const withTilde = resolved === homeDirectory
     ? '~'
     : resolved.startsWith(`${homeDirectory}${path.sep}`)
-      ? `~${path.sep}${path.relative(homeDirectory, resolved)}`
-      : resolved;
+      ? `~/${path.relative(homeDirectory, resolved).split(path.sep).join('/')}`
+      : resolved.split(path.sep).join('/');
 
   return truncateMiddle(withTilde, maxLength);
 }