Add: bash completion

completion.bash

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+_manage_completion() {
+    local cur prev commands
+    COMPREPLY=()
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    prev="${COMP_WORDS[COMP_CWORD-1]}"
+    
+    # Define available commands
+    commands="help new edit iedit"
+
+    case "$prev" in
+        edit|iedit)
+            # Provide completion for existing song names (directories in content/)
+            COMPREPLY=( $(compgen -W "$(ls -1 content/ 2>/dev/null)" -- "$cur") )
+            return 0
+            ;;
+        new)
+            # No completion for "new" since it's a new name
+            return 0
+            ;;
+    esac
+
+    # Default command completion
+    if [[ $COMP_CWORD -eq 1 ]]; then
+        COMPREPLY=( $(compgen -W "$commands" -- "$cur") )
+    fi
+}
+
+# Register the completion function for 'manage'
+complete -F _manage_completion manage
+complete -F _manage_completion ./manage
+