fix(claude): accurate version detection and nvm migration

- Simplify version_command to use 'claude --version' directly
  (package.json was returning stale/incorrect versions)
- Detect nvm-managed npm installs (.nvm/ paths) for migration
- Simplify get_current_version() to always run the binary

Author: CybotTM

catalog/claude.json

@@ -7,7 +7,7 @@
   "github_repo": "anthropics/claude-code",
   "binary_name": "claude",
   "script": "install_claude.sh",
-  "version_command": "claude_bin=$(command -v claude 2>/dev/null); if [ -n \"$claude_bin\" ]; then real_path=$(readlink -f \"$claude_bin\" 2>/dev/null || echo \"$claude_bin\"); if echo \"$real_path\" | grep -q 'node_modules'; then pkg_dir=$(dirname \"$real_path\"); [ -f \"$pkg_dir/package.json\" ] && grep '\"version\"' \"$pkg_dir/package.json\" | head -1 | sed 's/.*\"version\": *\"\\([0-9][0-9.]*\\)\".*/\\1/' && exit 0; fi; timeout 2 \"$claude_bin\" --version 2>/dev/null | grep -oE '[0-9]+\\.[0-9]+\\.[0-9]+' | head -1; fi",
+  "version_command": "timeout 2 claude --version 2>/dev/null | grep -oE '[0-9]+\\.[0-9]+\\.[0-9]+' | head -1",
   "guide": {
     "display_name": "Claude Code",
     "install_action": "upgrade",

scripts/install_claude.sh

@@ -8,28 +8,8 @@ ACTION="${1:-install}"
 
 # Get current version
 get_current_version() {
-  local claude_bin
-  claude_bin=$(command -v claude 2>/dev/null || true)
-
-  if [ -z "$claude_bin" ]; then
-    echo ""
-    return
-  fi
-
-  local real_path
-  real_path=$(readlink -f "$claude_bin" 2>/dev/null || echo "$claude_bin")
-
-  # If npm install, get version from package.json (avoids Node.js version issues)
-  if echo "$real_path" | grep -q 'node_modules'; then
-    local pkg_dir
-    pkg_dir=$(dirname "$real_path")
-    if [ -f "$pkg_dir/package.json" ]; then
-      grep '"version"' "$pkg_dir/package.json" | head -1 | sed 's/.*"version": *"\([0-9][0-9.]*\)".*/\1/' && return
-    fi
-  fi
-
-  # For native installs, try --version
-  timeout 2 "$claude_bin" --version 2>/dev/null | grep -oE '[0-9]+\.[0-9]+\.[0-9]+' | head -1 || true
+  # Always use --version for accurate version detection
+  timeout 2 claude --version 2>/dev/null | grep -oE '[0-9]+\.[0-9]+\.[0-9]+' | head -1 || true
 }
 
 # Install via native installer (recommended)
@@ -116,7 +96,8 @@ upgrade_claude() {
   real_path=$(readlink -f "$claude_bin" 2>/dev/null || echo "$claude_bin")
 
   # Detect installation method and upgrade accordingly
-  if echo "$real_path" | grep -q 'node_modules'; then
+  # Check for npm install: node_modules in resolved path OR .nvm path (nvm-managed npm)
+  if echo "$real_path" | grep -qE 'node_modules|\.nvm/'; then
     local current_ver
     current_ver=$(get_current_version)