refactor: centralize slash command registry (#1603)

* refactor: centralize slash command registry

Replace 7+ scattered command definition sites with a single
CommandDef registry in hermes_cli/commands.py. All downstream
consumers now derive from this registry:

- CLI process_command() resolves aliases via resolve_command()
- Gateway _known_commands uses GATEWAY_KNOWN_COMMANDS frozenset
- Gateway help text generated by gateway_help_lines()
- Telegram BotCommands generated by telegram_bot_commands()
- Slack subcommand map generated by slack_subcommand_map()

Adding a command or alias is now a one-line change to
COMMAND_REGISTRY instead of touching 6+ files.

Bugfixes included:
- Telegram now registers /rollback, /background (were missing)
- Slack now has /voice, /update, /reload-mcp (were missing)
- Gateway duplicate 'reasoning' dispatch (dead code) removed
- Gateway help text can no longer drift from CLI help

Backwards-compatible: COMMANDS and COMMANDS_BY_CATEGORY dicts are
rebuilt from the registry, so existing imports work unchanged.

* docs: update developer docs for centralized command registry

Update AGENTS.md with full 'Slash Command Registry' and 'Adding a
Slash Command' sections covering CommandDef fields, registry helpers,
and the one-line alias workflow.

Also update:
- CONTRIBUTING.md: commands.py description
- website/docs/reference/slash-commands.md: reference central registry
- docs/plans/centralize-command-registry.md: mark COMPLETED
- plans/checkpoint-rollback.md: reference new pattern
- hermes-agent-dev skill: architecture table

* chore: remove stale plan docs
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"""Slash command definitions and autocomplete for the Hermes CLI.
Contains the shared built-in ``COMMANDS`` dict and ``SlashCommandCompleter``.
The completer can optionally include dynamic skill slash commands supplied by the
interactive CLI.
Central registry for all slash commands. Every consumer -- CLI help, gateway
dispatch, Telegram BotCommands, Slack subcommand mapping, autocomplete --
derives its data from ``COMMAND_REGISTRY``.
To add a command: add a ``CommandDef`` entry to ``COMMAND_REGISTRY``.
To add an alias: set ``aliases=("short",)`` on the existing ``CommandDef``.
"""
from __future__ import annotations
import os
from collections.abc import Callable, Mapping
from dataclasses import dataclass, field
from pathlib import Path
from typing import Any
from prompt_toolkit.completion import Completer, Completion
# Commands organized by category for better help display
COMMANDS_BY_CATEGORY = {
"Session": {
"/new": "Start a new session (fresh session ID + history)",
"/reset": "Start a new session (alias for /new)",
"/clear": "Clear screen and start a new session",
"/history": "Show conversation history",
"/save": "Save the current conversation",
"/retry": "Retry the last message (resend to agent)",
"/undo": "Remove the last user/assistant exchange",
"/title": "Set a title for the current session (usage: /title My Session Name)",
"/compress": "Manually compress conversation context (flush memories + summarize)",
"/rollback": "List or restore filesystem checkpoints (usage: /rollback [number])",
"/stop": "Kill all running background processes",
"/background": "Run a prompt in the background (usage: /background <prompt>)",
"/bg": "Run a prompt in the background (alias for /background)",
},
"Configuration": {
"/config": "Show current configuration",
"/model": "Show or change the current model",
"/provider": "Show available providers and current provider",
"/prompt": "View/set custom system prompt",
"/personality": "Set a predefined personality",
"/verbose": "Cycle tool progress display: off → new → all → verbose",
"/reasoning": "Manage reasoning effort and display (usage: /reasoning [level|show|hide])",
"/skin": "Show or change the display skin/theme",
"/voice": "Toggle voice mode (Ctrl+B to record). Usage: /voice [on|off|tts|status]",
},
"Tools & Skills": {
"/tools": "List available tools",
"/toolsets": "List available toolsets",
"/skills": "Search, install, inspect, or manage skills from online registries",
"/cron": "Manage scheduled tasks (list, add/create, edit, pause, resume, run, remove)",
"/reload-mcp": "Reload MCP servers from config.yaml",
"/browser": "Connect browser tools to your live Chrome (usage: /browser connect|disconnect|status)",
"/plugins": "List installed plugins and their status",
},
"Info": {
"/help": "Show this help message",
"/usage": "Show token usage for the current session",
"/insights": "Show usage insights and analytics (last 30 days)",
"/platforms": "Show gateway/messaging platform status",
"/paste": "Check clipboard for an image and attach it",
},
"Exit": {
"/quit": "Exit the CLI (also: /exit, /q)",
},
}
# ---------------------------------------------------------------------------
# CommandDef dataclass
# ---------------------------------------------------------------------------
# Flat dict for backwards compatibility and autocomplete
COMMANDS = {}
for category_commands in COMMANDS_BY_CATEGORY.values():
COMMANDS.update(category_commands)
@dataclass(frozen=True)
class CommandDef:
"""Definition of a single slash command."""
name: str # canonical name without slash: "background"
description: str # human-readable description
category: str # "Session", "Configuration", etc.
aliases: tuple[str, ...] = () # alternative names: ("bg",)
args_hint: str = "" # argument placeholder: "<prompt>", "[name]"
cli_only: bool = False # only available in CLI
gateway_only: bool = False # only available in gateway/messaging
# ---------------------------------------------------------------------------
# Central registry -- single source of truth
# ---------------------------------------------------------------------------
COMMAND_REGISTRY: list[CommandDef] = [
# Session
CommandDef("new", "Start a new session (fresh session ID + history)", "Session",
aliases=("reset",)),
CommandDef("clear", "Clear screen and start a new session", "Session",
cli_only=True),
CommandDef("history", "Show conversation history", "Session",
cli_only=True),
CommandDef("save", "Save the current conversation", "Session",
cli_only=True),
CommandDef("retry", "Retry the last message (resend to agent)", "Session"),
CommandDef("undo", "Remove the last user/assistant exchange", "Session"),
CommandDef("title", "Set a title for the current session", "Session",
args_hint="[name]"),
CommandDef("compress", "Manually compress conversation context", "Session"),
CommandDef("rollback", "List or restore filesystem checkpoints", "Session",
args_hint="[number]"),
CommandDef("stop", "Kill all running background processes", "Session"),
CommandDef("background", "Run a prompt in the background", "Session",
aliases=("bg",), args_hint="<prompt>"),
CommandDef("status", "Show session info", "Session",
gateway_only=True),
CommandDef("sethome", "Set this chat as the home channel", "Session",
gateway_only=True, aliases=("set-home",)),
CommandDef("resume", "Resume a previously-named session", "Session",
args_hint="[name]"),
# Configuration
CommandDef("config", "Show current configuration", "Configuration",
cli_only=True),
CommandDef("model", "Show or change the current model", "Configuration",
args_hint="[name]"),
CommandDef("provider", "Show available providers and current provider",
"Configuration"),
CommandDef("prompt", "View/set custom system prompt", "Configuration",
cli_only=True, args_hint="[text]"),
CommandDef("personality", "Set a predefined personality", "Configuration",
args_hint="[name]"),
CommandDef("verbose", "Cycle tool progress display: off -> new -> all -> verbose",
"Configuration", cli_only=True),
CommandDef("reasoning", "Manage reasoning effort and display", "Configuration",
args_hint="[level|show|hide]"),
CommandDef("skin", "Show or change the display skin/theme", "Configuration",
cli_only=True, args_hint="[name]"),
CommandDef("voice", "Toggle voice mode", "Configuration",
args_hint="[on|off|tts|status]"),
# Tools & Skills
CommandDef("tools", "List available tools", "Tools & Skills",
cli_only=True),
CommandDef("toolsets", "List available toolsets", "Tools & Skills",
cli_only=True),
CommandDef("skills", "Search, install, inspect, or manage skills",
"Tools & Skills", cli_only=True),
CommandDef("cron", "Manage scheduled tasks", "Tools & Skills",
cli_only=True, args_hint="[subcommand]"),
CommandDef("reload-mcp", "Reload MCP servers from config", "Tools & Skills",
aliases=("reload_mcp",)),
CommandDef("plugins", "List installed plugins and their status",
"Tools & Skills", cli_only=True),
# Info
CommandDef("help", "Show available commands", "Info"),
CommandDef("usage", "Show token usage for the current session", "Info"),
CommandDef("insights", "Show usage insights and analytics", "Info",
args_hint="[days]"),
CommandDef("platforms", "Show gateway/messaging platform status", "Info",
cli_only=True, aliases=("gateway",)),
CommandDef("paste", "Check clipboard for an image and attach it", "Info",
cli_only=True),
CommandDef("update", "Update Hermes Agent to the latest version", "Info",
gateway_only=True),
# Exit
CommandDef("quit", "Exit the CLI", "Exit",
cli_only=True, aliases=("exit", "q")),
]
# ---------------------------------------------------------------------------
# Derived lookups -- rebuilt once at import time
# ---------------------------------------------------------------------------
def _build_command_lookup() -> dict[str, CommandDef]:
"""Map every name and alias to its CommandDef."""
lookup: dict[str, CommandDef] = {}
for cmd in COMMAND_REGISTRY:
lookup[cmd.name] = cmd
for alias in cmd.aliases:
lookup[alias] = cmd
return lookup
_COMMAND_LOOKUP: dict[str, CommandDef] = _build_command_lookup()
def resolve_command(name: str) -> CommandDef | None:
"""Resolve a command name or alias to its CommandDef.
Accepts names with or without the leading slash.
"""
return _COMMAND_LOOKUP.get(name.lower().lstrip("/"))
def _build_description(cmd: CommandDef) -> str:
"""Build a CLI-facing description string including usage hint."""
if cmd.args_hint:
return f"{cmd.description} (usage: /{cmd.name} {cmd.args_hint})"
return cmd.description
# Backwards-compatible flat dict: "/command" -> description
COMMANDS: dict[str, str] = {}
for _cmd in COMMAND_REGISTRY:
if not _cmd.gateway_only:
COMMANDS[f"/{_cmd.name}"] = _build_description(_cmd)
for _alias in _cmd.aliases:
COMMANDS[f"/{_alias}"] = f"{_cmd.description} (alias for /{_cmd.name})"
# Backwards-compatible categorized dict
COMMANDS_BY_CATEGORY: dict[str, dict[str, str]] = {}
for _cmd in COMMAND_REGISTRY:
if not _cmd.gateway_only:
_cat = COMMANDS_BY_CATEGORY.setdefault(_cmd.category, {})
_cat[f"/{_cmd.name}"] = COMMANDS[f"/{_cmd.name}"]
for _alias in _cmd.aliases:
_cat[f"/{_alias}"] = COMMANDS[f"/{_alias}"]
# ---------------------------------------------------------------------------
# Gateway helpers
# ---------------------------------------------------------------------------
# Set of all command names + aliases recognized by the gateway
GATEWAY_KNOWN_COMMANDS: frozenset[str] = frozenset(
name
for cmd in COMMAND_REGISTRY
if not cmd.cli_only
for name in (cmd.name, *cmd.aliases)
)
def gateway_help_lines() -> list[str]:
"""Generate gateway help text lines from the registry."""
lines: list[str] = []
for cmd in COMMAND_REGISTRY:
if cmd.cli_only:
continue
args = f" {cmd.args_hint}" if cmd.args_hint else ""
alias_parts: list[str] = []
for a in cmd.aliases:
# Skip internal aliases like reload_mcp (underscore variant)
if a.replace("-", "_") == cmd.name.replace("-", "_") and a != cmd.name:
continue
alias_parts.append(f"`/{a}`")
alias_note = f" (alias: {', '.join(alias_parts)})" if alias_parts else ""
lines.append(f"`/{cmd.name}{args}` -- {cmd.description}{alias_note}")
return lines
def telegram_bot_commands() -> list[tuple[str, str]]:
"""Return (command_name, description) pairs for Telegram setMyCommands.
Telegram command names cannot contain hyphens, so they are replaced with
underscores. Aliases are skipped -- Telegram shows one menu entry per
canonical command.
"""
result: list[tuple[str, str]] = []
for cmd in COMMAND_REGISTRY:
if cmd.cli_only:
continue
tg_name = cmd.name.replace("-", "_")
result.append((tg_name, cmd.description))
return result
def slack_subcommand_map() -> dict[str, str]:
"""Return subcommand -> /command mapping for Slack /hermes handler.
Maps both canonical names and aliases so /hermes bg do stuff works
the same as /hermes background do stuff.
"""
mapping: dict[str, str] = {}
for cmd in COMMAND_REGISTRY:
if cmd.cli_only:
continue
mapping[cmd.name] = f"/{cmd.name}"
for alias in cmd.aliases:
mapping[alias] = f"/{alias}"
return mapping
# ---------------------------------------------------------------------------
# Autocomplete
# ---------------------------------------------------------------------------
class SlashCommandCompleter(Completer):
"""Autocomplete for built-in slash commands and optional skill commands."""