diff --git a/src/auth/profile-detector.ts b/src/auth/profile-detector.ts
index a3fad69b..bde28265 100644
--- a/src/auth/profile-detector.ts
+++ b/src/auth/profile-detector.ts
@@ -11,11 +11,11 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
 import { findSimilarStrings, expandPath } from '../utils/helpers';
 import { Config, Settings, ProfileMetadata } from '../types';
 import { UnifiedConfig, CopilotConfig } from '../config/unified-config-types';
 import { loadUnifiedConfig, isUnifiedMode } from '../config/unified-config-loader';
+import { getCcsDir } from '../utils/config-manager';
 
 export type ProfileType = 'settings' | 'account' | 'cliproxy' | 'copilot' | 'default';
 
@@ -84,8 +84,9 @@ class ProfileDetector {
   private readonly profilesPath: string;
 
   constructor() {
-    this.configPath = path.join(os.homedir(), '.ccs', 'config.json');
-    this.profilesPath = path.join(os.homedir(), '.ccs', 'profiles.json');
+    const ccsDir = getCcsDir();
+    this.configPath = path.join(ccsDir, 'config.json');
+    this.profilesPath = path.join(ccsDir, 'profiles.json');
   }
 
   /**
diff --git a/src/auth/profile-registry.ts b/src/auth/profile-registry.ts
index 151781ee..e076e8eb 100644
--- a/src/auth/profile-registry.ts
+++ b/src/auth/profile-registry.ts
@@ -1,12 +1,12 @@
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
 import { ProfileMetadata } from '../types';
 import {
   loadOrCreateUnifiedConfig,
   saveUnifiedConfig,
   isUnifiedMode,
 } from '../config/unified-config-loader';
+import { getCcsDir } from '../utils/config-manager';
 
 /**
  * Profile Registry (Simplified)
@@ -43,7 +43,7 @@ export class ProfileRegistry {
   private profilesPath: string;
 
   constructor() {
-    this.profilesPath = path.join(os.homedir(), '.ccs', 'profiles.json');
+    this.profilesPath = path.join(getCcsDir(), 'profiles.json');
   }
 
   /**
diff --git a/src/delegation/headless-executor.ts b/src/delegation/headless-executor.ts
index a2eceec1..b282936a 100644
--- a/src/delegation/headless-executor.ts
+++ b/src/delegation/headless-executor.ts
@@ -7,7 +7,6 @@
 
 import { spawn } from 'child_process';
 import * as path from 'path';
-import * as os from 'os';
 import * as fs from 'fs';
 import { SessionManager } from './session-manager';
 import { SettingsParser } from './settings-parser';
@@ -15,6 +14,7 @@ import { ui, warn, info } from '../utils/ui';
 import { type ExecutionOptions, type ExecutionResult, type StreamMessage } from './executor/types';
 import { StreamBuffer, formatToolVerbose } from './executor/stream-parser';
 import { buildExecutionResult } from './executor/result-aggregator';
+import { getCcsDir } from '../utils/config-manager';
 
 // Re-export types for consumers
 export type { ExecutionOptions, ExecutionResult, StreamMessage } from './executor/types';
@@ -63,7 +63,7 @@ export class HeadlessExecutor {
     }
 
     // Get settings path for profile
-    const settingsPath = path.join(os.homedir(), '.ccs', `${profile}.settings.json`);
+    const settingsPath = path.join(getCcsDir(), `${profile}.settings.json`);
 
     // Validate settings file exists
     if (!fs.existsSync(settingsPath)) {
diff --git a/src/delegation/session-manager.ts b/src/delegation/session-manager.ts
index b9fba1f6..c407daad 100644
--- a/src/delegation/session-manager.ts
+++ b/src/delegation/session-manager.ts
@@ -6,7 +6,7 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
+import { getCcsDir } from '../utils/config-manager';
 
 interface SessionData {
   sessionId: string;
@@ -39,7 +39,7 @@ class SessionManager {
   private readonly sessionsPath: string;
 
   constructor() {
-    this.sessionsPath = path.join(os.homedir(), '.ccs', 'delegation-sessions.json');
+    this.sessionsPath = path.join(getCcsDir(), 'delegation-sessions.json');
   }
 
   /**
diff --git a/src/glmt/glmt-transformer.ts b/src/glmt/glmt-transformer.ts
index ad1a404d..5c4a41e7 100644
--- a/src/glmt/glmt-transformer.ts
+++ b/src/glmt/glmt-transformer.ts
@@ -10,8 +10,8 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
 import { DeltaAccumulator } from './delta-accumulator';
+import { getCcsDir } from '../utils/config-manager';
 import {
   RequestTransformer,
   StreamParser,
@@ -48,7 +48,7 @@ export class GlmtTransformer {
 
     const debugEnabled = process.env.CCS_DEBUG === '1';
     this.debugLog = config.debugLog ?? debugEnabled;
-    this.debugLogDir = config.debugLogDir || path.join(os.homedir(), '.ccs', 'logs');
+    this.debugLogDir = config.debugLogDir || path.join(getCcsDir(), 'logs');
 
     // Initialize pipeline components
     this.requestTransformer = new RequestTransformer({
diff --git a/src/management/checks/config-check.ts b/src/management/checks/config-check.ts
index e56846a8..c05d8457 100644
--- a/src/management/checks/config-check.ts
+++ b/src/management/checks/config-check.ts
@@ -7,6 +7,7 @@ import * as path from 'path';
 import * as os from 'os';
 import { ok, fail, warn, info } from '../../utils/ui';
 import { HealthCheck, IHealthChecker, createSpinner } from './types';
+import { getCcsDir } from '../../utils/config-manager';
 
 const ora = createSpinner();
 
@@ -20,7 +21,7 @@ export class ConfigFilesChecker implements IHealthChecker {
   private readonly ccsDir: string;
 
   constructor() {
-    this.ccsDir = path.join(os.homedir(), '.ccs');
+    this.ccsDir = getCcsDir();
   }
 
   run(results: HealthCheck): void {
diff --git a/src/management/checks/profile-check.ts b/src/management/checks/profile-check.ts
index e29a0143..d1cd555b 100644
--- a/src/management/checks/profile-check.ts
+++ b/src/management/checks/profile-check.ts
@@ -4,9 +4,9 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
 import { ok, fail, warn, info } from '../../utils/ui';
 import { HealthCheck, IHealthChecker, createSpinner } from './types';
+import { getCcsDir } from '../../utils/config-manager';
 
 const ora = createSpinner();
 
@@ -18,7 +18,7 @@ export class ProfilesChecker implements IHealthChecker {
   private readonly ccsDir: string;
 
   constructor() {
-    this.ccsDir = path.join(os.homedir(), '.ccs');
+    this.ccsDir = getCcsDir();
   }
 
   run(results: HealthCheck): void {
@@ -130,7 +130,7 @@ export class InstancesChecker implements IHealthChecker {
   private readonly ccsDir: string;
 
   constructor() {
-    this.ccsDir = path.join(os.homedir(), '.ccs');
+    this.ccsDir = getCcsDir();
   }
 
   run(results: HealthCheck): void {
@@ -169,7 +169,7 @@ export class DelegationChecker implements IHealthChecker {
   private readonly ccsDir: string;
 
   constructor() {
-    this.ccsDir = path.join(os.homedir(), '.ccs');
+    this.ccsDir = getCcsDir();
   }
 
   run(results: HealthCheck): void {
diff --git a/src/management/checks/system-check.ts b/src/management/checks/system-check.ts
index 65b1b39e..f25c60ca 100644
--- a/src/management/checks/system-check.ts
+++ b/src/management/checks/system-check.ts
@@ -3,13 +3,12 @@
  */
 
 import * as fs from 'fs';
-import * as path from 'path';
-import * as os from 'os';
 import { spawn } from 'child_process';
 import { getClaudeCliInfo } from '../../utils/claude-detector';
 import { escapeShellArg } from '../../utils/shell-executor';
 import { ok, fail } from '../../utils/ui';
 import { HealthCheck, IHealthChecker, createSpinner } from './types';
+import { getCcsDir } from '../../utils/config-manager';
 
 const ora = createSpinner();
 
@@ -99,7 +98,7 @@ export class CcsDirectoryChecker implements IHealthChecker {
   private readonly ccsDir: string;
 
   constructor() {
-    this.ccsDir = path.join(os.homedir(), '.ccs');
+    this.ccsDir = getCcsDir();
   }
 
   run(results: HealthCheck): void {
diff --git a/src/management/instance-manager.ts b/src/management/instance-manager.ts
index 27ecd8d2..2063a39c 100644
--- a/src/management/instance-manager.ts
+++ b/src/management/instance-manager.ts
@@ -8,8 +8,8 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
 import SharedManager from './shared-manager';
+import { getCcsDir } from '../utils/config-manager';
 
 /**
  * Instance Manager Class
@@ -19,7 +19,7 @@ class InstanceManager {
   private readonly sharedManager: SharedManager;
 
   constructor() {
-    this.instancesDir = path.join(os.homedir(), '.ccs', 'instances');
+    this.instancesDir = path.join(getCcsDir(), 'instances');
     this.sharedManager = new SharedManager();
   }
 
diff --git a/src/management/shared-manager.ts b/src/management/shared-manager.ts
index 65ea5ed1..ca6d29be 100644
--- a/src/management/shared-manager.ts
+++ b/src/management/shared-manager.ts
@@ -10,6 +10,7 @@ import * as fs from 'fs';
 import * as path from 'path';
 import * as os from 'os';
 import { ok, info, warn } from '../utils/ui';
+import { getCcsDir } from '../utils/config-manager';
 
 interface SharedItem {
   name: string;
@@ -28,9 +29,10 @@ class SharedManager {
 
   constructor() {
     this.homeDir = os.homedir();
-    this.sharedDir = path.join(this.homeDir, '.ccs', 'shared');
+    const ccsDir = getCcsDir();
+    this.sharedDir = path.join(ccsDir, 'shared');
     this.claudeDir = path.join(this.homeDir, '.claude');
-    this.instancesDir = path.join(this.homeDir, '.ccs', 'instances');
+    this.instancesDir = path.join(ccsDir, 'instances');
     this.sharedItems = [
       { name: 'commands', type: 'directory' },
       { name: 'skills', type: 'directory' },
diff --git a/src/utils/update-checker.ts b/src/utils/update-checker.ts
index c4a0e41d..019e0c6e 100644
--- a/src/utils/update-checker.ts
+++ b/src/utils/update-checker.ts
@@ -4,10 +4,10 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as os from 'os';
 import * as https from 'https';
+import { getCcsDir } from './config-manager';
 
-const CACHE_DIR = path.join(os.homedir(), '.ccs', 'cache');
+const CACHE_DIR = path.join(getCcsDir(), 'cache');
 const UPDATE_CHECK_FILE = path.join(CACHE_DIR, 'update-check.json');
 const CHECK_INTERVAL = 24 * 60 * 60 * 1000; // 24 hours
 const GITHUB_API_URL = 'https://api.github.com/repos/kaitranntt/ccs/releases/latest';