Fix Claude adapter to support shell function definitions (#20)

Author: him0

adapters/ai/claude.sh

@@ -1,9 +1,40 @@
 #!/usr/bin/env bash
 # Claude Code AI adapter
 
+# Find the actual claude executable (not a shell function)
+# Returns the path to the executable, or empty string if not found
+find_claude_executable() {
+  local cmd
+
+  # Check common installation paths first
+  if [ -x "$HOME/.claude/local/claude" ]; then
+    echo "$HOME/.claude/local/claude"
+    return 0
+  fi
+
+  # Try to find executable using type -P (Bash/Zsh)
+  for cmd in claude claude-code; do
+    local exe_path
+    exe_path="$(type -P "$cmd" 2>/dev/null)" && [ -n "$exe_path" ] && {
+      echo "$exe_path"
+      return 0
+    }
+  done
+
+  # Fallback: use type -t to check if it's an executable file
+  for cmd in claude claude-code; do
+    if [ "$(type -t "$cmd" 2>/dev/null)" = "file" ]; then
+      command -v "$cmd"
+      return 0
+    fi
+  done
+
+  return 1
+}
+
 # Check if Claude Code is available
 ai_can_start() {
-  command -v claude >/dev/null 2>&1 || command -v claude-code >/dev/null 2>&1
+  find_claude_executable >/dev/null 2>&1
 }
 
 # Start Claude Code in a directory
@@ -12,7 +43,10 @@ ai_start() {
   local path="$1"
   shift
 
-  if ! ai_can_start; then
+  local claude_cmd
+  claude_cmd="$(find_claude_executable)"
+
+  if [ -z "$claude_cmd" ]; then
     log_error "Claude Code not found. Install from https://claude.com/claude-code"
     log_info "The CLI is called 'claude' (or 'claude-code' in older versions)"
     return 1
@@ -23,10 +57,5 @@ ai_start() {
     return 1
   fi
 
-  # Try 'claude' first (official binary name), fallback to 'claude-code'
-  if command -v claude >/dev/null 2>&1; then
-    (cd "$path" && claude "$@")
-  else
-    (cd "$path" && claude-code "$@")
-  fi
+  (cd "$path" && "$claude_cmd" "$@")
 }