diff --git a/src/main/services/discovery/ProjectScanner.ts b/src/main/services/discovery/ProjectScanner.ts
index e118dd7b..c8e454e4 100644
--- a/src/main/services/discovery/ProjectScanner.ts
+++ b/src/main/services/discovery/ProjectScanner.ts
@@ -756,6 +756,13 @@ export class ProjectScanner {
     return this.todosDir;
   }
 
+  /**
+   * Gets the FileSystemProvider instance used by this scanner.
+   */
+  getFileSystemProvider(): FileSystemProvider {
+    return this.fsProvider;
+  }
+
   /**
    * Checks if the projects directory exists.
    */
diff --git a/src/main/services/discovery/SubagentResolver.ts b/src/main/services/discovery/SubagentResolver.ts
index 66b11391..ee11c960 100644
--- a/src/main/services/discovery/SubagentResolver.ts
+++ b/src/main/services/discovery/SubagentResolver.ts
@@ -85,7 +85,7 @@ export class SubagentResolver {
    */
   private async parseSubagentFile(filePath: string): Promise<Process | null> {
     try {
-      const messages = await parseJsonlFile(filePath);
+      const messages = await parseJsonlFile(filePath, this.projectScanner.getFileSystemProvider());
 
       if (messages.length === 0) {
         return null;
diff --git a/src/main/services/parsing/SessionParser.ts b/src/main/services/parsing/SessionParser.ts
index e9c00547..b0fb3f0c 100644
--- a/src/main/services/parsing/SessionParser.ts
+++ b/src/main/services/parsing/SessionParser.ts
@@ -74,7 +74,7 @@ export class SessionParser {
    * Parse a JSONL file at the given path.
    */
   async parseSessionFile(filePath: string): Promise<ParsedSession> {
-    const messages = await parseJsonlFile(filePath);
+    const messages = await parseJsonlFile(filePath, this.projectScanner.getFileSystemProvider());
     return this.processMessages(messages);
   }
 
@@ -339,7 +339,7 @@ export class SessionParser {
     messages: ParsedMessage[];
     metrics: SessionMetrics;
   }> {
-    const messages = await parseJsonlFile(filePath);
+    const messages = await parseJsonlFile(filePath, this.projectScanner.getFileSystemProvider());
     const metrics = calculateMetrics(messages);
 
     return { messages, metrics };
diff --git a/test/main/services/parsing/SessionParser.test.ts b/test/main/services/parsing/SessionParser.test.ts
index c80ec8dd..f511d471 100644
--- a/test/main/services/parsing/SessionParser.test.ts
+++ b/test/main/services/parsing/SessionParser.test.ts
@@ -16,6 +16,7 @@ import {
   type ParsedSession,
 } from '../../../../src/main/services/parsing/SessionParser';
 import type { ParsedMessage } from '../../../../src/main/types';
+import { LocalFileSystemProvider } from '../../../../src/main/services/infrastructure/LocalFileSystemProvider';
 
 // =============================================================================
 // Mock ProjectScanner
@@ -30,6 +31,7 @@ const mockProjectScanner = {
   getSession: vi.fn(),
   listWorktreeSessions: vi.fn(),
   scanWithWorktreeGrouping: vi.fn(),
+  getFileSystemProvider: vi.fn().mockReturnValue(new LocalFileSystemProvider()),
 };
 
 // =============================================================================