diff --git a/CHANGELOG.md b/CHANGELOG.md
index d17d69e0..6e6a30df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,19 +1,33 @@
-## [5.4.1-dev.1](https://github.com/kaitranntt/ccs/compare/v5.4.0...v5.4.1-dev.1) (2025-12-04)
+## [5.4.3-dev.1](https://github.com/kaitranntt/ccs/compare/v5.4.3...v5.4.3-dev.1) (2025-12-04)
 
 
 ### Bug Fixes
 
-* **cliproxy:** resolve windows auth browser not opening ([af4d6cf](https://github.com/kaitranntt/ccs/commit/af4d6cff89395a74e2eaf56551d3f56b95e0a6ce)), closes [#42](https://github.com/kaitranntt/ccs/issues/42)
-* **doctor:** resolve windows claude cli detection failure ([cfe9ba0](https://github.com/kaitranntt/ccs/commit/cfe9ba05a4351302fbb330ca00b6025cb65a8f20)), closes [#41](https://github.com/kaitranntt/ccs/issues/41)
 * **tests:** migrate test suite from mocha to bun test runner ([bd46c8d](https://github.com/kaitranntt/ccs/commit/bd46c8de1237e3a76c774b00a1c9e026f4c0cd4b))
 
-## [5.4.1-dev.1](https://github.com/kaitranntt/ccs/compare/v5.4.0...v5.4.1-dev.1) (2025-12-03)
+## [5.4.3](https://github.com/kaitranntt/ccs/compare/v5.4.2...v5.4.3) (2025-12-03)
+
+
+### Bug Fixes
+
+* **postinstall:** handle broken symlinks during npm install ([81add5a](https://github.com/kaitranntt/ccs/commit/81add5a05eeb8297ceef840071f11b6a194df707))
+
+## [5.4.2](https://github.com/kaitranntt/ccs/compare/v5.4.1...v5.4.2) (2025-12-03)
+
+
+### Bug Fixes
+
+* **merge:** resolve conflicts between dev and main ([8347ea6](https://github.com/kaitranntt/ccs/commit/8347ea64c6b919a79f5ab63c398b6c36f012ca2d))
+* **sync:** implement copy fallback for windows when symlinks unavailable ([6b3f93a](https://github.com/kaitranntt/ccs/commit/6b3f93a80a0232e8c964d73e51aa0afb0768b00f)), closes [#45](https://github.com/kaitranntt/ccs/issues/45)
+
+## [5.4.1](https://github.com/kaitranntt/ccs/compare/v5.4.0...v5.4.1) (2025-12-03)
 
 
 ### Bug Fixes
 
 * **cliproxy:** resolve windows auth browser not opening ([af4d6cf](https://github.com/kaitranntt/ccs/commit/af4d6cff89395a74e2eaf56551d3f56b95e0a6ce)), closes [#42](https://github.com/kaitranntt/ccs/issues/42)
 * **doctor:** resolve windows claude cli detection failure ([cfe9ba0](https://github.com/kaitranntt/ccs/commit/cfe9ba05a4351302fbb330ca00b6025cb65a8f20)), closes [#41](https://github.com/kaitranntt/ccs/issues/41)
+* **sync:** implement copy fallback for windows when symlinks unavailable ([6b3f93a](https://github.com/kaitranntt/ccs/commit/6b3f93a80a0232e8c964d73e51aa0afb0768b00f)), closes [#45](https://github.com/kaitranntt/ccs/issues/45)
 
 # [5.4.0](https://github.com/kaitranntt/ccs/compare/v5.3.0...v5.4.0) (2025-12-02)
 
@@ -29,45 +43,6 @@
 * **prompt:** improve password input handling with raw mode and buffer support ([bc56d2e](https://github.com/kaitranntt/ccs/commit/bc56d2e135532b2ae443144dd42217b26bcba951))
 
 
-### Features
-
-* **cliproxy:** add qwen code oauth provider support ([#31](https://github.com/kaitranntt/ccs/issues/31)) ([a3f1e52](https://github.com/kaitranntt/ccs/commit/a3f1e52ac68600ba0806d67aacceb6477ffa3543)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
-* **cliproxy:** auto-update cliproxyapi to latest release on startup ([8873ccd](https://github.com/kaitranntt/ccs/commit/8873ccd981679e8acff8965accdc22215c6e4aa2))
-* **profile:** add profile command with configuration display ([53d7a15](https://github.com/kaitranntt/ccs/commit/53d7a15c047e760723e051dc0f7be3c0dd42d087))
-* **shell-completion:** add --force flag and fix zsh profile coloring ([7faed1d](https://github.com/kaitranntt/ccs/commit/7faed1d84ba29ba02bf687bae5b3458617512e67))
-* **ui:** add central ui abstraction layer for cli styling ([6e49e0e](https://github.com/kaitranntt/ccs/commit/6e49e0e7e157abd4a38c98553dbe3c16473b57d9))
-* **ui:** enhance auth commands with new ui layer ([6f42a65](https://github.com/kaitranntt/ccs/commit/6f42a6527b1bf02cbf29ec23525c9f27af6f0c98))
-* **ui:** enhance delegation with listr2 task lists and styled output ([716193a](https://github.com/kaitranntt/ccs/commit/716193a682a1504767c7f32409a0de51278242eb))
-* **ui:** enhance doctor and error manager with new ui layer ([57016f3](https://github.com/kaitranntt/ccs/commit/57016f3f765f207915161514e1827b18c0b03d5c))
-* **ui:** enhance help and profile commands with new ui layer ([f3ed359](https://github.com/kaitranntt/ccs/commit/f3ed359050ce66d96c0109cf60c242bfd092114d))
-* **ui:** enhance section headers with gradient and rename profile to api ([073a5e1](https://github.com/kaitranntt/ccs/commit/073a5e15ee8f895d7485864526d8946b774bb728))
-
-# [5.4.0-beta.3](https://github.com/kaitranntt/ccs/compare/v5.4.0-beta.2...v5.4.0-beta.3) (2025-12-02)
-
-
-### Bug Fixes
-
-* **cliproxy:** convert windows backslashes to forward slashes in config.yaml auth-dir ([a6663cb](https://github.com/kaitranntt/ccs/commit/a6663cbd0471d1a08e8bbcdea897760b434ae937)), closes [#36](https://github.com/kaitranntt/ccs/issues/36)
-
-# [5.4.0-beta.2](https://github.com/kaitranntt/ccs/compare/v5.4.0-beta.1...v5.4.0-beta.2) (2025-12-02)
-
-
-### Bug Fixes
-
-* **auth:** prevent default profile from using stale glm env vars ([13d13da](https://github.com/kaitranntt/ccs/commit/13d13dab516332bc17345dc77afd44ae48bdd2aa)), closes [#37](https://github.com/kaitranntt/ccs/issues/37)
-
-# [5.4.0-beta.1](https://github.com/kaitranntt/ccs/compare/v5.3.0...v5.4.0-beta.1) (2025-12-02)
-
-
-### Bug Fixes
-
-* **cliproxy:** improve qwen oauth error handling ([7e0b0fe](https://github.com/kaitranntt/ccs/commit/7e0b0feca8ce2ed5d505c5bf6c84e54c6df8839e)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
-* **cliproxy:** use double-dash flags for cliproxyapi auth ([#24](https://github.com/kaitranntt/ccs/issues/24)) ([4c81f28](https://github.com/kaitranntt/ccs/commit/4c81f28f0b67ef92cf74d0f5c13a5943ff0a7f00))
-* **deps:** add chalk, boxen, gradient-string, listr2 as dependencies ([a214749](https://github.com/kaitranntt/ccs/commit/a214749725cfe05612e2c84cefa2ab3f619c6a2e))
-* **glmt:** handle 401 errors and headers-already-sent exception ([#30](https://github.com/kaitranntt/ccs/issues/30)) ([c953382](https://github.com/kaitranntt/ccs/commit/c95338232a37981b95b785b47185ce18d6d94b7a)), closes [#26](https://github.com/kaitranntt/ccs/issues/26)
-* **prompt:** improve password input handling with raw mode and buffer support ([bc56d2e](https://github.com/kaitranntt/ccs/commit/bc56d2e135532b2ae443144dd42217b26bcba951))
-
-
 ### Features
 
 * **cliproxy:** add qwen code oauth provider support ([#31](https://github.com/kaitranntt/ccs/issues/31)) ([a3f1e52](https://github.com/kaitranntt/ccs/commit/a3f1e52ac68600ba0806d67aacceb6477ffa3543)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
@@ -88,26 +63,6 @@
 
 * **profile,shell-completion,prompt:** add profile commands and improve input handling ([#34](https://github.com/kaitranntt/ccs/issues/34)) ([7ec8cc8](https://github.com/kaitranntt/ccs/commit/7ec8cc83690a595bba9bb5f62fb3b9fa6b6a2f8f)), closes [#24](https://github.com/kaitranntt/ccs/issues/24) [#30](https://github.com/kaitranntt/ccs/issues/30) [#26](https://github.com/kaitranntt/ccs/issues/26) [#31](https://github.com/kaitranntt/ccs/issues/31) [#29](https://github.com/kaitranntt/ccs/issues/29) [#29](https://github.com/kaitranntt/ccs/issues/29)
 
-# [5.3.0-beta.4](https://github.com/kaitranntt/ccs/compare/v5.3.0-beta.3...v5.3.0-beta.4) (2025-12-01)
-
-
-### Bug Fixes
-
-* **cliproxy:** improve qwen oauth error handling ([#33](https://github.com/kaitranntt/ccs/issues/33)) ([1c3374f](https://github.com/kaitranntt/ccs/commit/1c3374f6a7e4440e299d49b58808c6454b4547c2)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
-
-# [5.3.0-beta.3](https://github.com/kaitranntt/ccs/compare/v5.3.0-beta.2...v5.3.0-beta.3) (2025-12-01)
-
-
-### Bug Fixes
-
-* **prompt:** improve password input handling with raw mode and buffer support ([bc56d2e](https://github.com/kaitranntt/ccs/commit/bc56d2e135532b2ae443144dd42217b26bcba951))
-
-
-### Features
-
-* **profile:** add profile command with configuration display ([53d7a15](https://github.com/kaitranntt/ccs/commit/53d7a15c047e760723e051dc0f7be3c0dd42d087))
-* **shell-completion:** add --force flag and fix zsh profile coloring ([7faed1d](https://github.com/kaitranntt/ccs/commit/7faed1d84ba29ba02bf687bae5b3458617512e67))
-
 ## [5.2.1](https://github.com/kaitranntt/ccs/compare/v5.2.0...v5.2.1) (2025-12-01)
 
 
@@ -115,27 +70,6 @@
 
 * **cliproxy:** improve qwen oauth error handling ([#33](https://github.com/kaitranntt/ccs/issues/33)) ([1c3374f](https://github.com/kaitranntt/ccs/commit/1c3374f6a7e4440e299d49b58808c6454b4547c2)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
 
-# [5.3.0-beta.2](https://github.com/kaitranntt/ccs/compare/v5.3.0-beta.1...v5.3.0-beta.2) (2025-12-01)
-
-
-### Bug Fixes
-
-* **cliproxy:** improve qwen oauth error handling ([7e0b0fe](https://github.com/kaitranntt/ccs/commit/7e0b0feca8ce2ed5d505c5bf6c84e54c6df8839e)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
-
-# [5.3.0-beta.1](https://github.com/kaitranntt/ccs/compare/v5.2.0...v5.3.0-beta.1) (2025-12-01)
-
-
-### Bug Fixes
-
-* **cliproxy:** use double-dash flags for cliproxyapi auth ([#24](https://github.com/kaitranntt/ccs/issues/24)) ([4c81f28](https://github.com/kaitranntt/ccs/commit/4c81f28f0b67ef92cf74d0f5c13a5943ff0a7f00))
-* **glmt:** handle 401 errors and headers-already-sent exception ([#30](https://github.com/kaitranntt/ccs/issues/30)) ([c953382](https://github.com/kaitranntt/ccs/commit/c95338232a37981b95b785b47185ce18d6d94b7a)), closes [#26](https://github.com/kaitranntt/ccs/issues/26)
-
-
-### Features
-
-* **cliproxy:** add qwen code oauth provider support ([#31](https://github.com/kaitranntt/ccs/issues/31)) ([a3f1e52](https://github.com/kaitranntt/ccs/commit/a3f1e52ac68600ba0806d67aacceb6477ffa3543)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)
-* **cliproxy:** auto-update cliproxyapi to latest release on startup ([8873ccd](https://github.com/kaitranntt/ccs/commit/8873ccd981679e8acff8965accdc22215c6e4aa2))
-
 # [5.2.0](https://github.com/kaitranntt/ccs/compare/v5.1.1...v5.2.0) (2025-12-01)
 
 
@@ -150,13 +84,6 @@
 
 * **cliproxy:** use double-dash flags for cliproxyapi auth ([9489884](https://github.com/kaitranntt/ccs/commit/94898848ea4533dcfc142e1b6c9bf939ba655537))
 
-## [5.1.1-beta.1](https://github.com/kaitranntt/ccs/compare/v5.1.0...v5.1.1-beta.1) (2025-12-01)
-
-
-### Bug Fixes
-
-* **cliproxy:** use double-dash flags for cliproxyapi auth ([#24](https://github.com/kaitranntt/ccs/issues/24)) ([4c81f28](https://github.com/kaitranntt/ccs/commit/4c81f28f0b67ef92cf74d0f5c13a5943ff0a7f00))
-
 # [5.1.0](https://github.com/kaitranntt/ccs/compare/v5.0.2...v5.1.0) (2025-12-01)
 
 
@@ -281,552 +208,3 @@ Format: [Keep a Changelog](https://keepachangelog.com/)
 - **Quality Gates**: All Phase 01 ESLint strictness rules maintained
 - **Type Safety**: Comprehensive TypeScript coverage with zero `any` types
 - **Interface Consistency**: All commands follow standardized `CommandHandler` interface
-
-## [4.4.0] - 2025-11-23
-
-### Changed
-- **BREAKING**: settings.json now shared across profiles via symlinks
-  - Each profile previously had isolated settings.json
-  - Now all profiles share ~/.claude/settings.json
-  - Migration automatic on install (uses ~/.claude/settings.json)
-  - Backups created: `<instance>/settings.json.pre-shared-migration`
-  - Rollback: restore backup manually if needed
-
-### Added
-- Doctor validates settings.json symlink integrity
-- Sync repairs broken settings.json symlinks
-- Migration from isolated to shared settings (automatic)
-
-### Fixed
-- Consistent shared data architecture across all .claude/ items
-
-## [4.3.10] - 2025-11-23
-
-### Fixed
-- **Update Cache Issue**: Fixed `ccs update` serving cached package versions instead of fresh downloads
-- Package manager cache is now automatically cleared before updating
-- Update now ensures users always receive the latest version from registry
-
-### Technical Details
-- **Node.js (bin/ccs.js)**: Added cache clearing for npm, yarn, pnpm before update
-  - npm: `npm cache clean --force`
-  - yarn: `yarn cache clean`
-  - pnpm: `pnpm store prune`
-  - bun: No explicit cache clearing needed
-- **Bash (lib/ccs)**: Added `npm cache clean --force` before npm update
-- **PowerShell (lib/ccs.ps1)**: Added `npm cache clean --force` before npm update
-- **Non-blocking**: Update continues even if cache clearing fails (with warning)
-- **Manual fallback commands**: Updated to include cache clearing step
-
-### Impact
-- Users no longer need to manually run `npm cache clean --force` before `ccs update`
-- Resolves issue where update reported success but installed cached/outdated version
-- Ensures fresh package downloads from npm registry on every update
-
-## [4.3.8] - 2025-11-23
-
-### Fixed
-- **ora v9 Compatibility**: Fixed "ora is not a function" errors in `ccs doctor` and installer utilities
-- Properly handle ora v9+ ES module format when using CommonJS `require()`
-- All spinner-based operations now work correctly with ora v9.0.0
-
-### Technical Details
-- ora v9+ is an ES module, requiring `.default` property access in CommonJS
-- Updated import: `const oraModule = require('ora'); ora = oraModule.default || oraModule`
-- Fallback spinner implementation ensures graceful degradation when ora is unavailable
-- Affects: `bin/management/doctor.js`, `bin/utils/claude-dir-installer.js`, `bin/utils/claude-symlink-manager.js`
-- Impact: `ccs doctor` command and postinstall scripts now work correctly with latest ora version
-
-## [4.3.7] - 2025-11-23
-
-### Fixed
-- **Postinstall Script**: Fixed missing `~/.ccs/.claude/` directory during `npm install`
-- Made `ora` dependency optional in `ClaudeDirInstaller` and `ClaudeSymlinkManager`
-- Postinstall script now gracefully handles missing `ora` module during installation
-- Ensures `.claude/` directory and symlinks are properly created even when `ora` is unavailable
-
-### Technical Details
-- Root cause: `ora` module not available during `npm install` postinstall execution
-- Solution: Optional require with fallback to `console.log` when `ora` is unavailable
-- Affects: `bin/utils/claude-dir-installer.js`, `bin/utils/claude-symlink-manager.js`
-- Impact: All npm installations now properly create `~/.ccs/.claude/` and CCS symlinks
-
-## [4.3.6] - 2025-11-23
-
-### Added
-- **Plugin Support**: Claude Code plugins now shared across all CCS profiles via `~/.ccs/shared/plugins/`
-- Symlink architecture: `~/.claude/plugins/` ← `~/.ccs/shared/plugins/` ← `instance/plugins/`
-- Install plugins once, use across GLM, GLMT, Kimi, and all Claude accounts
-- Cross-platform support with Windows fallback (copy mode)
-
-## [4.3.5] - 2025-11-22
-
-### Changed
-- **Deprecated Agent Cleanup**: Removed deprecated `ccs-delegator.md` agent file from installations
-- Enhanced installation process to automatically clean up obsolete files
-- Improved `ccs sync` command with migration logic for deprecated components
-
-### Removed
-- **ccs-delegator.md**: Agent file deprecated in favor of `ccs-delegation` skill (v4.3.2)
-- Clean up of package copy in `~/.ccs/.claude/agents/ccs-delegator.md`
-- Clean up of user symlink in `~/.claude/agents/ccs-delegator.md`
-
-### Added
-- Automatic migration marker system for tracking cleanup completion
-- Intelligent backup system for user-modified deprecated files
-- Version-aware migration logic following existing patterns
-
-### Migration
-- **Automatic**: Users upgrading from v4.3.2 or earlier will have deprecated files cleaned up automatically
-- **Manual**: Run `ccs sync` to trigger cleanup manually
-- **Backups**: User-modified files are backed up with timestamp before removal
-- **Idempotent**: Cleanup is safe to run multiple times
-
-### Technical Details
-- Integrated into `npm postinstall` script for automatic cleanup on package updates
-- Added to `ccs sync` command for manual cleanup operations
-- Uses migration markers in `~/.ccs/.migrations/v435-delegator-cleanup`
-- Follows existing SharedManager migration patterns for consistency
-
-## [4.3.4] - 2025-11-22
-
-### Fixed
-- **CCS Update Command**: Enhanced `ccs update` to support multiple package managers
-- Added automatic detection for npm, yarn, pnpm, and bun package managers
-- Update commands now use the appropriate package manager automatically
-- Improved installation method detection for more reliable updates
-
-## [4.3.3] - 2025-11-21
-
-### ⚠️ BREAKING CHANGES
-
-- **CCS Delegation Commands Consolidated**: Replaced 4 hardcoded commands with 2 intelligent commands
-  - Old: `/ccs:glm`, `/ccs:kimi`, `/ccs:glm:continue`, `/ccs:kimi:continue`
-  - New: `/ccs` (auto-selects profile), `/ccs:continue` (auto-detects profile)
-  - Override with flags: `/ccs --glm "task"`, `/ccs --kimi "task"`
-
-### Changed
-- Updated `--help` text across Node.js, Bash, and PowerShell implementations
-- Updated delegation examples in README.md and workflow documentation
-- Fixed CCS Doctor health checks to validate new command files
-- Updated user configuration templates with new command syntax
-
-### Added
-- Intelligent profile selection based on task analysis (reasoning, long-context, cost-optimized)
-- Support for custom profiles without creating new commands
-- Enhanced session management with automatic profile detection
-
-### Migration
-| Old Command | New Command |
-|-------------|-------------|
-| `/ccs:glm "task"` | `/ccs "task"` (or `/ccs --glm "task"`) |
-| `/ccs:kimi "task"` | `/ccs "task"` (or `/ccs --kimi "task"`) |
-| `/ccs:glm:continue` | `/ccs:continue` |
-| `/ccs:kimi:continue` | `/ccs:continue` |
-
----
-
-## [4.1.5] - 2025-11-17
-
-### Added
-- **Sync command** (`ccs sync`) for updating delegation commands and skills
-- **Short flag** `-sc` for `--shell-completion` command
-- **Enhanced version display** with delegation status information
-
-### Changed
-- **Auth help text** now emphasizes concurrent account usage across all platforms
-- **Help text standardization** ensures consistent messaging across bash, PowerShell, and Node.js
-- **Description text** emphasizes running different Claude CLI sessions concurrently
-- **GitHub documentation links** updated to stable permalinks
-- **Shell completions** updated to include sync command and -sc flag
-
-### Fixed
-- **Inconsistent help text** across different platform implementations
-- **Outdated description** text to emphasize concurrent sessions over specific examples
-
----
-
-## [4.1.4] - 2025-11-17
-
-### Fixed
-- **Shell completion ENOTDIR errors** when parent path conflicts with existing files
-- **Zsh completion syntax errors** with _alternative and _describe functions
-- **Reversed color application** in zsh completion (commands vs descriptions)
-
-### Added
-- **Enhanced shell completion UI/UX** with descriptions and grouping
-- **Color-coded completions** for zsh and fish shells
-- **Custom settings profile support** in shell completions
-- **Improved completion formatting** with section headers and separators
-
-### Changed
-- **Generalized help text** removed specific account examples for broader applicability
-- **Delegation help section** clarified context and removed non-existent commands
-- **Shell completion organization** grouped by categories (commands, model profiles, account profiles)
-
----
-
-## [4.1.3] - 2025-11-17
-
-### Fixed
-- **Doctor command delegation check false positive**
-  - Fixed `ccs doctor` incorrectly checking for delegation commands in `~/.ccs/shared/commands/ccs/` instead of `~/.ccs/.claude/commands/ccs/`
-  - Removed check for non-existent `create.md` file
-  - Now correctly detects installed delegation commands (glm.md, kimi.md) after npm install
-  - Users will no longer see "[!] Delegation commands not found" warning when delegation is properly installed
-
----
-
-## [4.1.2] - 2025-11-16
-
-### Fixed
-- **Kimi API 401 errors** caused by deprecated model fields
-  - Removed `ANTHROPIC_MODEL`, `ANTHROPIC_SMALL_FAST_MODEL`, `ANTHROPIC_DEFAULT_OPUS_MODEL`, `ANTHROPIC_DEFAULT_SONNET_MODEL`, `ANTHROPIC_DEFAULT_HAIKU_MODEL` from Kimi settings
-  - Kimi API update now rejects requests with these fields (previously optional, now break authentication)
-  - Automatic migration removes deprecated fields from existing `~/.ccs/kimi.settings.json`
-  - Preserves user API keys and custom settings during migration
-  - Updated `config/base-kimi.settings.json` template
-  - Users experiencing 401 errors will be automatically fixed on next install/update
-
-### Changed
-- Kimi settings now minimal: only `ANTHROPIC_BASE_URL` and `ANTHROPIC_AUTH_TOKEN` required
-
----
-
-## [4.1.1] - 2025-11-16
-
-### Fixed
-- **npm install fails to copy .claude/ directory** to `~/.ccs/.claude/`
-  - Error: "[!] CCS .claude/ directory not found, skipping symlink installation"
-  - Created `bin/utils/claude-dir-installer.js` utility to copy `.claude/` from package
-  - Updated `scripts/postinstall.js` to copy `.claude/` before creating symlinks
-  - Updated `ccs update` command to re-install `.claude/` directory
-  - Supports Node.js 14+ with fallback for versions < 16.7.0
-
-### Added
-- `ClaudeDirInstaller` utility class for managing `.claude/` directory installation
-
----
-
-## [4.1.0] - 2025-11-16
-
-### Added
-- **Selective .claude/ directory symlinking** for shared resources across profiles
-- `claude-symlink-manager.js` utility for managing symlinks with Windows fallback
-- Enhanced `ccs doctor` command to verify .claude/ directory health
-- Postinstall script for automatic .claude/ directory setup
-- **Stream-JSON output** for real-time delegation visibility (`--output-format stream-json --verbose`)
-- **Real-time tool tracking** with verbose context (shows file paths, commands, patterns)
-- **Smart slash command detection** (preserves /cook, /plan, /commit in delegated prompts)
-- **Signal handling** (Ctrl+C/Esc kills delegated child processes, prevents orphans)
-- **Comprehensive tool support** (13 Claude Code tools: Bash, Read, Write, Edit, Glob, Grep, NotebookEdit, NotebookRead, SlashCommand, Task, TodoWrite, WebFetch, WebSearch)
-- **Active task display** for TodoWrite (shows current task instead of count)
-- Documentation: Stream-JSON workflow diagrams
-
-### Changed
-- Installers now create selective symlinks (commands/, skills/, agents/) instead of full directory copies
-- Windows support: Falls back to directory copying when symlinks unavailable
-- Profile-specific files (settings.json, sessions/, todolists/, logs/) remain isolated
-- Improved README with symlink architecture documentation
-- **BREAKING**: Delegation now uses stream-json instead of single JSON blob
-- **Time-based limits** replace turn-based limits (10min default timeout vs 20 max-turns)
-- **Graceful termination** with SIGTERM → SIGKILL fallback (2s grace period)
-- Removed `--max-turns` flag (deprecated, use timeout instead)
-- Simplified slash command docs (removed over-prescriptive instructions)
-- Internal tools (TodoWrite, Skill) now show meaningful progress
-
-### Fixed
-- Duplicate .claude/ resources across multiple profiles
-- Installer logic now handles symlink creation during setup
-- Orphaned `claude -p` processes after parent termination
-- Slash commands broken by IMPORTANT safety prefix
-- Slash commands detected as file paths (/home vs /cook)
-- Stream-json requires `--verbose` flag with `-p`
-- Tool output spam (filtered internal tools, show active tasks)
-
-### Removed
-- IMPORTANT safety prefix (broke slash command positioning)
-- Outdated test files (json-output.test.js, max-turns.test.js)
-- TTY detection (now shows progress unless CCS_QUIET=1)
-
----
-
-## [3.5.0] - 2025-11-15
-
-### Added
-- Shell auto-completion (bash, zsh, PowerShell, Fish)
-- `--shell-completion` command (auto-installs for detected shell with proper comment markers, cross-platform)
-- Error codes (E101-E901) with documentation at docs/errors/
-- Fuzzy matching "Did you mean?" suggestions (Levenshtein distance)
-- Progress indicators (doctor command: [n/9] counter, GLMT proxy startup spinner)
-- Interactive confirmation prompts for destructive operations
-- `--yes/-y` flag for automation (skips confirmations)
-- `--json` flag for auth commands (list, show)
-- Impact display (session count, paths) before profile deletion
-- Comprehensive test suite (15 tests, 100% pass rate)
-
-### Changed
-- Error boxes: Unicode (╔═╗) → ASCII (===) for cross-platform compatibility
-- JSON output uses CCS version (3.5.0) instead of separate schema version
-- Help text includes EXAMPLES section across all platforms
-- Test suite properly counts test cases (not assertions)
-
-### Fixed
-- Standalone installer dependency handling (now downloads error-codes, progress-indicator, prompt files)
-- `--yes` flag bug (returned false instead of true, preventing auto-confirmation)
-- Help text consistency between Node.js and bash versions (added Uninstall section to bash)
-- Test pass rate calculation (now excludes skipped tests from denominator)
-- Help section comparison (locale-specific sort order)
-
----
-
-## [3.4.6] - 2025-11-12
-
-### Added
-- GLMT ReasoningEnforcer: Prompt injection + API params hybrid (4 effort levels, always enabled)
-
-### Changed
-- Added GLMT production warnings (NOT PRODUCTION READY)
-- Streamlined CLAUDE.md (-337 lines)
-- Simplified GLMT controls: 4 mechanisms → 3 automatic
-- Locale + reasoning enforcement now always enabled
-
-### Removed
-- GLMT Budget Calculator mechanism (consolidated into automatic controls)
-- Deprecated GLMT environment variables (`CCS_GLMT_FORCE_ENGLISH`, `CCS_GLMT_THINKING_BUDGET`, `CCS_GLMT_STREAMING`)
-- Outdated test scenarios for removed environment variables
-
----
-
-## [3.4.5] - 2025-11-11
-
-### Fixed
-- Thinking block signature timing race (blocks appeared blank in Claude CLI UI)
-- Content verification guard in `_createSignatureDeltaEvent()` returns null if empty
-
-### Changed
-- Consolidated debug flags: `CCS_DEBUG_LOG`, `CCS_GLMT_DEBUG` → `CCS_DEBUG` only
-
-### Added
-- 6 regression tests for thinking signature race (`test-thinking-signature-race.js`)
-
----
-
-## [3.4.4] - 2025-11-11
-
-### Fixed
-- Postinstall symlink creation (fixed require path to shared-manager.js)
-
----
-
-## [3.4.3] - 2025-11-11
-
-### Added
-- Keyword thinking control: `think` < `think hard` < `think harder` < `ultrathink`
-- Streaming auto-fallback on error
-
-### Changed
-- YAGNI/KISS: Removed budget-calculator.js, task-classifier.js (-272 LOC)
-- `CCS_DEBUG_LOG` → `CCS_DEBUG` (backward compatible)
-
-### Removed
-- `CCS_GLMT_THINKING_BUDGET`, `CCS_GLMT_STREAMING`, `CCS_GLMT_FORCE_ENGLISH` env vars
-
-### Fixed
-- GLMT proxy path (glmt/glmt-proxy.js)
-- `ultrathink` effort: `high` → `max`
-
----
-
-## [3.4.2] - 2025-11-11
-
-### Changed
-- Version bump for npm CI workaround
-
----
-
-## [3.4.1] - 2025-11-11
-
-### Added
-- GLMT loop prevention (locale enforcer, budget calculator, task classifier, loop detector)
-- Env vars: `CCS_GLMT_FORCE_ENGLISH`, `CCS_GLMT_THINKING_BUDGET`
-- 110 GLMT tests (all passing)
-
-### Changed
-- Directory structure: bin/{glmt,auth,management,utils}, tests/{unit,integration}
-- Token savings: 50-80% for execution tasks
-
-### Fixed
-- Thinking parameter processing from Claude CLI
-- GLMT tool support (MCP tools, function calling)
-- Unbounded planning loops (20+ min → <2 min)
-- Chinese output issues
-
----
-
-## [3.4.0] - 2025-11-11
-
-### Added
-- GLMT streaming (5-20x faster TTFB: <500ms vs 2-10s)
-- SSEParser, DeltaAccumulator classes
-- Security limits (1MB SSE, 10MB content, 100 blocks)
-
----
-
-## [3.3.0] - 2025-11-11
-
-### Added
-- Debug mode: `CCS_DEBUG_LOG=1`
-- Verbose flag: `ccs glmt --verbose`
-- GLMT config defaults
-
----
-
-## [3.2.0] - 2025-11-10
-
-### Changed
-- **BREAKING**: Symlink-based shared data (was copy-based)
-- ~/.ccs/shared/ → ~/.claude/ symlinks
-- 60% faster installs
-
----
-
-## [3.1.1] - 2025-11-10
-
-### Fixed
-- Migration now runs during install (not on first `ccs` execution)
-
----
-
-## [3.1.0] - 2025-11-10
-
-### Added
-- Shared data architecture (commands/skills/agents shared across profiles)
-
----
-
-## [3.0.2] - 2025-11-10
-
-### Fixed
-- Profile creation no longer auto-sets as default
-- Help text simplified (40% shorter)
-
----
-
-## [3.0.1] - 2025-11-10
-
-### Added
-- Auto-recovery system for missing/corrupted configs
-- `ccs doctor` health check command
-- ErrorManager class
-
----
-
-## [3.0.0] - 2025-11-09
-
-### Added
-- **Multi-account switching**: Run multiple Claude accounts concurrently
-- Auth commands: create, list, show, remove, default
-- Profile isolation (sessions, todos, logs per profile)
-
-### BREAKING
-- Removed v2.x vault encryption
-- Login-per-profile model
-
----
-
-## [2.5.1] - 2025-11-07
-### Added
-- Kimi `ANTHROPIC_SMALL_FAST_MODEL` support
-
-## [2.5.0] - 2025-11-07
-### Added
-- Kimi integration
-
-## [2.4.9] - 2025-11-05
-### Fixed
-- Node.js DEP0190 warning
-
-## [2.4.8] - 2025-11-05
-### Fixed
-- Deprecation warning (platform-specific shell)
-
-## [2.4.7] - 2025-11-05
-### Fixed
-- Windows spawn EINVAL error
-
-## [2.4.6] - 2025-11-05
-### Fixed
-- Color detection, TTY handling
-
-## [2.4.5] - 2025-11-05
-### Added
-- Performance benchmarks (npm vs shell)
-
-## [2.4.3] - 2025-11-04
-### Fixed
-- **CRITICAL**: DEP0190 command injection vulnerability
-
-## [2.4.2] - 2025-11-04
-### Changed
-- Version bump for republish
-
-## [2.4.1] - 2025-11-04
-### Fixed
-- **CRITICAL**: Windows PATH detection
-- PowerShell terminal termination
-
-## [2.4.0] - 2025-11-04
-### Added
-- npm package support
-### BREAKING
-- Executables moved to lib/
-
-## [2.3.1] - 2025-11-04
-### Fixed
-- PowerShell syntax errors
-
-## [2.3.0] - 2025-11-04
-### Added
-- Custom Claude CLI path: `CCS_CLAUDE_PATH`
-
-## [2.2.3] - 2025-11-03
-### Added
-- `ccs --uninstall` command
-
-## [2.2.2] - 2025-11-03
-### Fixed
-- `ccs --install` via symlinks
-
-## [2.2.1] - 2025-11-03
-### Changed
-- Hardcoded versions (no VERSION file)
-
-## [2.2.0] - 2025-11-03
-### Added
-- Auto PATH configuration
-- Terminal colors (NO_COLOR support)
-### Changed
-- Unified install: ~/.local/bin (Unix)
-### Fixed
-- **CRITICAL**: Shell injection vulnerability
-
-## [2.1.0] - 2025-11-02
-### Changed
-- Windows uses --settings flag (27% code reduction)
-
-## [2.0.0] - 2025-11-02
-### BREAKING
-- Removed `ccs son` profile
-### Added
-- Config templates, installers/ folder
-### Fixed
-- **CRITICAL**: PowerShell env var crash
-
-## [1.1.0] - 2025-11-01
-### Added
-- Git worktrees support
-
-## [1.0.0] - 2025-10-31
-### Added
-- Initial release
diff --git a/VERSION b/VERSION
index ef39ed80..a6e6cd04 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.4.1-dev.1
+5.4.3-dev.1
diff --git a/installers/install.ps1 b/installers/install.ps1
index a24b7d9e..a16c3881 100644
--- a/installers/install.ps1
+++ b/installers/install.ps1
@@ -83,7 +83,7 @@ $InstallMethod = if ($ScriptDir -and ((Test-Path "$ScriptDir\lib\ccs.ps1") -or (
 # IMPORTANT: Update this version when releasing new versions!
 # This hardcoded version is used for standalone installations (irm | iex)
 # For git installations, VERSION file is read if available
-$CcsVersion = "5.4.1-dev.1"
+$CcsVersion = "5.4.3"
 
 # Try to read VERSION file for git installations
 if ($ScriptDir) {
diff --git a/installers/install.sh b/installers/install.sh
index 5de1b2b8..aef2873f 100755
--- a/installers/install.sh
+++ b/installers/install.sh
@@ -84,7 +84,7 @@ fi
 # IMPORTANT: Update this version when releasing new versions!
 # This hardcoded version is used for standalone installations (curl | bash)
 # For git installations, VERSION file is read if available
-CCS_VERSION="5.4.1-dev.1"
+CCS_VERSION="5.4.3"
 
 # Try to read VERSION file for git installations
 if [[ -f "$SCRIPT_DIR/VERSION" ]]; then
diff --git a/package.json b/package.json
index fb9abdbe..02176604 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kaitranntt/ccs",
-  "version": "5.4.1-dev.1",
+  "version": "5.4.3-dev.1",
   "description": "Claude Code Switch - Instant profile switching between Claude Sonnet 4.5 and GLM 4.6",
   "keywords": [
     "cli",
diff --git a/scripts/postinstall.js b/scripts/postinstall.js
index c761c920..4db3256b 100755
--- a/scripts/postinstall.js
+++ b/scripts/postinstall.js
@@ -24,6 +24,35 @@ function getCcsHome() {
   return process.env.CCS_HOME || os.homedir();
 }
 
+/**
+ * Check if path is a broken symlink and remove it if so
+ * Fixes: ENOENT error when mkdir tries to create over a dangling symlink
+ * @param {string} targetPath - Path to check
+ * @returns {boolean} true if broken symlink was removed
+ */
+function removeIfBrokenSymlink(targetPath) {
+  try {
+    // lstatSync doesn't follow symlinks - it checks the link itself
+    const stats = fs.lstatSync(targetPath);
+    if (stats.isSymbolicLink()) {
+      // Check if symlink target exists
+      try {
+        fs.statSync(targetPath); // This follows symlinks
+        return false; // Symlink is valid
+      } catch {
+        // Target doesn't exist - broken symlink
+        fs.unlinkSync(targetPath);
+        console.log(`[!] Removed broken symlink: ${targetPath}`);
+        return true;
+      }
+    }
+    return false;
+  } catch {
+    // Path doesn't exist at all
+    return false;
+  }
+}
+
 /**
  * Validate created configuration files
  * @returns {object} { success: boolean, errors: string[], warnings: string[] }
@@ -85,6 +114,8 @@ function createConfigFiles() {
 
     // Create ~/.ccs/shared/ directory structure (Phase 1)
     const sharedDir = path.join(ccsDir, 'shared');
+    // Handle broken symlinks (common when upgrading from older versions)
+    removeIfBrokenSymlink(sharedDir);
     if (!fs.existsSync(sharedDir)) {
       fs.mkdirSync(sharedDir, { recursive: true, mode: 0o755 });
       console.log('[OK] Created directory: ~/.ccs/shared/');
@@ -94,6 +125,8 @@ function createConfigFiles() {
     const sharedSubdirs = ['commands', 'skills', 'agents', 'plugins'];
     for (const subdir of sharedSubdirs) {
       const subdirPath = path.join(sharedDir, subdir);
+      // Handle broken symlinks before creating directory
+      removeIfBrokenSymlink(subdirPath);
       if (!fs.existsSync(subdirPath)) {
         fs.mkdirSync(subdirPath, { recursive: true, mode: 0o755 });
         console.log(`[OK] Created directory: ~/.ccs/shared/${subdir}/`);
diff --git a/src/utils/claude-symlink-manager.ts b/src/utils/claude-symlink-manager.ts
index 4011d007..29c98260 100644
--- a/src/utils/claude-symlink-manager.ts
+++ b/src/utils/claude-symlink-manager.ts
@@ -164,12 +164,9 @@ export class ClaudeSymlinkManager {
       if (!silent) console.log(`[OK] Symlinked ${item.target}`);
       return true;
     } catch (err) {
-      // Windows fallback: stub for now, full implementation in v4.2
+      // Windows fallback: copy instead of symlink when symlinks unavailable
       if (process.platform === 'win32') {
-        if (!silent) {
-          console.log(`[!] Symlink failed for ${item.target} (Windows fallback deferred to v4.2)`);
-          console.log(`[i] Enable Developer Mode or wait for next update`);
-        }
+        return this.copyFallback(sourcePath, targetPath, item, silent);
       } else {
         const error = err as Error;
         if (!silent) console.log(`[!] Failed to symlink ${item.target}: ${error.message}`);
@@ -178,6 +175,61 @@ export class ClaudeSymlinkManager {
     }
   }
 
+  /**
+   * Windows fallback: copy files/directories when symlinks unavailable
+   * Note: Changes won't auto-sync; user must run 'ccs sync' after updates
+   */
+  private copyFallback(
+    sourcePath: string,
+    targetPath: string,
+    item: CcsItem,
+    silent = false
+  ): boolean {
+    try {
+      if (item.type === 'directory') {
+        // Copy directory recursively
+        this.copyDirRecursive(sourcePath, targetPath);
+      } else {
+        // Copy single file
+        fs.copyFileSync(sourcePath, targetPath);
+      }
+      if (!silent) {
+        console.log(`[OK] Copied ${item.target} (symlink unavailable)`);
+        console.log(`[i] Run 'ccs sync' after CCS updates to refresh`);
+      }
+      return true;
+    } catch (copyErr) {
+      const error = copyErr as Error;
+      if (!silent) {
+        console.log(`[!] Failed to copy ${item.target}: ${error.message}`);
+        console.log(`[i] Enable Developer Mode for symlinks, or check permissions`);
+      }
+      return false;
+    }
+  }
+
+  /**
+   * Recursively copy directory (for Windows fallback)
+   */
+  private copyDirRecursive(src: string, dest: string): void {
+    if (!fs.existsSync(dest)) {
+      fs.mkdirSync(dest, { recursive: true });
+    }
+
+    const entries = fs.readdirSync(src, { withFileTypes: true });
+
+    for (const entry of entries) {
+      const srcPath = path.join(src, entry.name);
+      const destPath = path.join(dest, entry.name);
+
+      if (entry.isDirectory()) {
+        this.copyDirRecursive(srcPath, destPath);
+      } else {
+        fs.copyFileSync(srcPath, destPath);
+      }
+    }
+  }
+
   /**
    * Check if target is already the correct symlink pointing to source
    */
@@ -224,8 +276,8 @@ export class ClaudeSymlinkManager {
   }
 
   /**
-   * Uninstall CCS items from ~/.claude/ (remove symlinks only)
-   * Safe: only removes items that are CCS symlinks
+   * Uninstall CCS items from ~/.claude/ (remove symlinks or copied files)
+   * Safe: only removes items that are CCS symlinks or valid copies
    */
   uninstall(): void {
     let removed = 0;
@@ -234,10 +286,20 @@ export class ClaudeSymlinkManager {
       const targetPath = path.join(this.userClaudeDir, item.target);
       const sourcePath = path.join(this.ccsClaudeDir, item.source);
 
-      // Only remove if it's our symlink
-      if (fs.existsSync(targetPath) && this.isOurSymlink(targetPath, sourcePath)) {
+      // Check if it's our symlink or a valid copy (Windows fallback)
+      const isSymlink = this.isOurSymlink(targetPath, sourcePath);
+      const isCopy =
+        process.platform === 'win32' && this.isCopiedItem(targetPath, sourcePath, item.type);
+
+      if (fs.existsSync(targetPath) && (isSymlink || isCopy)) {
         try {
-          fs.unlinkSync(targetPath);
+          if (item.type === 'directory' && !isSymlink) {
+            // Remove copied directory recursively
+            fs.rmSync(targetPath, { recursive: true, force: true });
+          } else {
+            // Remove symlink or file
+            fs.unlinkSync(targetPath);
+          }
           console.log(`[OK] Removed ${item.target}`);
           removed++;
         } catch (err) {
@@ -286,14 +348,47 @@ export class ClaudeSymlinkManager {
         issues.push(`Not installed: ${item.target} (run 'ccs sync' to install)`);
         healthy = false;
       } else if (!this.isOurSymlink(targetPath, sourcePath)) {
-        issues.push(`Not a CCS symlink: ${item.target} (run 'ccs sync' to fix)`);
-        healthy = false;
+        // On Windows, copied files are valid (symlink fallback)
+        if (process.platform === 'win32' && this.isCopiedItem(targetPath, sourcePath, item.type)) {
+          // Copied file is valid on Windows, but note it's not a symlink
+          issues.push(`${item.target} is a copy (not symlink) - run 'ccs sync' after updates`);
+          // Still healthy, just a warning
+        } else {
+          issues.push(`Not a CCS symlink: ${item.target} (run 'ccs sync' to fix)`);
+          healthy = false;
+        }
       }
     }
 
     return { healthy, issues };
   }
 
+  /**
+   * Check if target is a valid copy of source (Windows fallback check)
+   */
+  private isCopiedItem(
+    targetPath: string,
+    sourcePath: string,
+    type: 'file' | 'directory'
+  ): boolean {
+    try {
+      const targetStats = fs.statSync(targetPath);
+      const sourceStats = fs.statSync(sourcePath);
+
+      if (type === 'directory') {
+        // For directories, just check both exist and are directories
+        return targetStats.isDirectory() && sourceStats.isDirectory();
+      } else {
+        // For files, compare size as basic validation
+        return (
+          targetStats.isFile() && sourceStats.isFile() && targetStats.size === sourceStats.size
+        );
+      }
+    } catch {
+      return false;
+    }
+  }
+
   /**
    * Sync delegation commands and skills to ~/.claude/ (used by 'ccs sync' command)
    * Same as install() but with explicit sync message