hermes - 💡(How to fix) Fix Bug: /indicator slash command registered but has no handler implementation

Bug Report

Summary

The /indicator CLI command exists in the central COMMAND_REGISTRY (defined in hermes_cli/commands.py lines 151-153) but lacks a corresponding handler in cli.py's process_command() method, causing it to return "Unknown command" when executed.

Environment

Hermes Agent v0.14.0 (2026.5.16)
Python: 3.11.15
Git: 04b4f765c

Steps to Reproduce

1. Start Hermes in CLI mode: hermes
2. Type: /indicator unicode (or any style: kaomoji, emoji, ascii)
3. Observe error: Unknown command: /indicator unicode

Expected Behavior

The command should change the busy indicator style in real-time.

Actual Behavior

The command is resolved via resolve_command() in the registry, but process_command() in cli.py has no elif canonical == "indicator" handler, causing it to fall through to the "Unknown command" response.

Root Cause Analysis

hermes_cli/commands.py line 151-153:

CommandDef("indicator", "Pick the TUI busy-indicator style", "Configuration",
           cli_only=True, args_hint="[kaomoji|emoji|unicode|ascii]",
           subcommands=("kaomoji", "emoji", "unicode", "ascii"))

cli.py process_command() method (~line 7683+): No handler exists for the "indicator" canonical command.

Workaround

Users can manually set the indicator style via config:

hermes config set display.busy_indicator_style <style>

Where style is: kaomoji, emoji, unicode, ascii

Suggested Fix

Add an elif canonical == "indicator" handler in cli.py that:

1. Parses the subcommand argument
2. Updates display.busy_indicator_style
3. Notifies the display/spinner subsystem

Config Documentation

The config key exists and is documented in hermes_cli/config.py lines 979-980:

# TUI busy indicator style: kaomoji (default), emoji, unicode (braille
# spinner), or ascii. Live-swappable via `/indicator <style>`.