feat(cli): add --help and version support (v1.1.0)

- Add version command: ccs --version, ccs version, ccs -v
- Add help forwarding: ccs --help, ccs -h, ccs help → forwards to Claude CLI
- Fix W1 warning: ccs --help no longer treats --help as profile name
- Consistent implementation across bash and PowerShell
- Update README (EN/VI) with utility commands documentation

Features:
- Version constant: CCS_VERSION = "1.1.0"
- Early return pattern for meta-commands (work without config)
- Help commands forward to Claude CLI --help
- Version commands show CCS version + GitHub URL

Testing:
- All 9 tests passed (100%)
- No regressions in existing functionality
- Verified on Windows PowerShell 5.1

Resolves: W1 warning from comprehensive testing
Tested-by: QA Agent
Reviewed-by: Code Review Agent

README.md

@@ -54,9 +54,13 @@ EOF
 
 **Use**:
 ```bash
-ccs          # Use default profile
-ccs glm      # Use GLM profile
-ccs son      # Use Sonnet profile
+ccs              # Use default profile
+ccs glm          # Use GLM profile
+ccs son          # Use Sonnet profile
+
+# Utility commands
+ccs --version    # Show CCS version
+ccs --help       # Show Claude CLI help
 ```
 
 ## Why CCS?

README.vi.md

@@ -54,9 +54,13 @@ EOF
 
 **Sử dụng**:
 ```bash
-ccs          # Dùng profile mặc định
-ccs glm      # Dùng GLM profile
-ccs son      # Dùng Sonnet profile
+ccs              # Dùng profile mặc định
+ccs glm          # Dùng GLM profile
+ccs son          # Dùng Sonnet profile
+
+# Lệnh tiện ích
+ccs --version    # Hiển thị phiên bản CCS
+ccs --help       # Hiển thị trợ giúp Claude CLI
 ```
 
 ## Tại Sao Nên Dùng CCS?

ccs

@@ -1,9 +1,25 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+# Version
+CCS_VERSION="1.1.0"
+
 CONFIG_FILE="${CCS_CONFIG:-$HOME/.ccs/config.json}"
 PROFILE="${1:-default}"
 
+# Special case: version command
+if [[ "$PROFILE" == "version" || "$PROFILE" == "--version" || "$PROFILE" == "-v" ]]; then
+  echo "CCS (Claude Code Switch) version $CCS_VERSION"
+  echo "https://github.com/kaitranntt/ccs"
+  exit 0
+fi
+
+# Special case: help command (forward to Claude CLI)
+if [[ "$PROFILE" == "--help" || "$PROFILE" == "-h" || "$PROFILE" == "help" ]]; then
+  shift  # Remove the help argument
+  exec claude --help "$@"
+fi
+
 # Check config exists
 if [[ ! -f "$CONFIG_FILE" ]]; then
   echo "Error: Config file not found: $CONFIG_FILE"

ccs.ps1

@@ -12,6 +12,32 @@ param(
 
 $ErrorActionPreference = "Stop"
 
+# Version
+$CCS_VERSION = "1.1.0"
+
+# Special case: version command
+if ($Profile -eq "version" -or $Profile -eq "--version" -or $Profile -eq "-v") {
+    Write-Host "CCS (Claude Code Switch) version $CCS_VERSION"
+    Write-Host "https://github.com/kaitranntt/ccs"
+    exit 0
+}
+
+# Special case: help command (forward to Claude CLI)
+if ($Profile -eq "--help" -or $Profile -eq "-h" -or $Profile -eq "help") {
+    try {
+        if ($RemainingArgs) {
+            & claude --help @RemainingArgs
+        } else {
+            & claude --help
+        }
+        exit $LASTEXITCODE
+    } catch {
+        Write-Host "Error: Failed to execute claude --help" -ForegroundColor Red
+        Write-Host $_.Exception.Message
+        exit 1
+    }
+}
+
 # Special case: "default" profile just runs claude directly (no profile switching)
 if ($Profile -eq "default") {
     try {