diff --git a/VERSION b/VERSION
index 80895903..f77856a6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.3.0
+4.3.1
diff --git a/installers/install.ps1 b/installers/install.ps1
index 60881504..1cc3325c 100644
--- a/installers/install.ps1
+++ b/installers/install.ps1
@@ -31,7 +31,7 @@ $InstallMethod = if ($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 = "4.3.0"
+$CcsVersion = "4.3.1"
 
 # Try to read VERSION file for git installations
 if ($ScriptDir) {
diff --git a/installers/install.sh b/installers/install.sh
index f34171cd..7a261004 100755
--- a/installers/install.sh
+++ b/installers/install.sh
@@ -32,7 +32,7 @@ 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="4.3.0"
+CCS_VERSION="4.3.1"
 
 # Try to read VERSION file for git installations
 if [[ -f "$SCRIPT_DIR/VERSION" ]]; then
diff --git a/lib/ccs b/lib/ccs
index fa5ca959..f3534517 100755
--- a/lib/ccs
+++ b/lib/ccs
@@ -2,7 +2,7 @@
 set -euo pipefail
 
 # Version (updated by scripts/bump-version.sh)
-CCS_VERSION="4.3.0"
+CCS_VERSION="4.3.1"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 readonly CONFIG_FILE="${CCS_CONFIG:-$HOME/.ccs/config.json}"
 readonly PROFILES_JSON="$HOME/.ccs/profiles.json"
diff --git a/lib/ccs.ps1 b/lib/ccs.ps1
index 80c8edb2..5151d934 100644
--- a/lib/ccs.ps1
+++ b/lib/ccs.ps1
@@ -12,7 +12,7 @@ param(
 $ErrorActionPreference = "Stop"
 
 # Version (updated by scripts/bump-version.sh)
-$CcsVersion = "4.3.0"
+$CcsVersion = "4.3.1"
 $ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
 $ConfigFile = if ($env:CCS_CONFIG) { $env:CCS_CONFIG } else { "$env:USERPROFILE\.ccs\config.json" }
 $ProfilesJson = "$env:USERPROFILE\.ccs\profiles.json"
diff --git a/package.json b/package.json
index e2f68afd..010f7b18 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kaitranntt/ccs",
-  "version": "4.3.0",
+  "version": "4.3.1",
   "description": "Claude Code Switch - Instant profile switching between Claude Sonnet 4.5 and GLM 4.6",
   "keywords": [
     "cli",
diff --git a/scripts/completion/ccs.fish b/scripts/completion/ccs.fish
index 0688853c..dd68ea41 100644
--- a/scripts/completion/ccs.fish
+++ b/scripts/completion/ccs.fish
@@ -1,6 +1,11 @@
 # Fish completion for CCS (Claude Code Switch)
 # Compatible with fish 3.0+
 #
+# Features:
+#   - Categorized completions with [cmd], [model], and [account] prefixes
+#   - Dynamic profile loading from config.json and profiles.json
+#   - Context-aware subcommand completion
+#
 # Installation:
 #   Copy to ~/.config/fish/completions/:
 #     mkdir -p ~/.config/fish/completions
@@ -72,23 +77,23 @@ complete -c ccs -s h -l help -d 'Show help message'
 complete -c ccs -s v -l version -d 'Show version information'
 complete -c ccs -s sc -l shell-completion -d 'Install shell completion'
 
-# Top-level commands (blue color for commands)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'auth' -d (set_color blue)'Manage multiple Claude accounts'(set_color normal)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'doctor' -d (set_color blue)'Run health check and diagnostics'(set_color normal)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'sync' -d (set_color blue)'Sync delegation commands and skills'(set_color normal)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'update' -d (set_color blue)'Update CCS to latest version'(set_color normal)
+# Commands - grouped with [cmd] prefix for visual distinction
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'auth' -d '[cmd] Manage multiple Claude accounts'
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'doctor' -d '[cmd] Run health check and diagnostics'
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'sync' -d '[cmd] Sync delegation commands and skills'
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'update' -d '[cmd] Update CCS to latest version'
 
-# Top-level known settings profiles (green color for model profiles)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'default' -d (set_color green)'Default Claude Sonnet 4.5'(set_color normal)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'glm' -d (set_color green)'GLM-4.6 (cost-optimized)'(set_color normal)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'glmt' -d (set_color green)'GLM-4.6 with thinking mode'(set_color normal)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'kimi' -d (set_color green)'Kimi for Coding (long-context)'(set_color normal)
+# Model profiles - grouped with [model] prefix for visual distinction
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'default' -d '[model] Default Claude Sonnet 4.5'
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'glm' -d '[model] GLM-4.6 (cost-optimized)'
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'glmt' -d '[model] GLM-4.6 with thinking mode'
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a 'kimi' -d '[model] Kimi for Coding (long-context)'
 
-# Top-level custom settings profiles (dynamic, with generic description in green)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a '(__fish_ccs_get_custom_settings_profiles)' -d (set_color green)'Settings-based profile'(set_color normal)
+# Custom model profiles - dynamic with [model] prefix
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a '(__fish_ccs_get_custom_settings_profiles)' -d '[model] Settings-based profile'
 
-# Top-level account profiles (dynamic, yellow color for account profiles)
-complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a '(__fish_ccs_get_account_profiles)' -d (set_color yellow)'Account profile'(set_color normal)
+# Account profiles - dynamic with [account] prefix
+complete -c ccs -n 'not __fish_seen_subcommand_from auth doctor sync update' -a '(__fish_ccs_get_account_profiles)' -d '[account] Account-based profile'
 
 # shell-completion subflags
 complete -c ccs -n '__fish_seen_argument -l shell-completion; or __fish_seen_argument -s sc' -l bash -d 'Install for bash'