Summary

Add support for /<alias> as a shorthand for /model <alias>.

Many users naturally type /gpt, /sonnet, /haiku etc. to switch models. Today only /model <name> is recognized, so those commands are silently ignored.

How it works

Aliases are read dynamically from cfg.agent.models[*].alias at runtime — nothing is hard-coded.

Example config:

{
  "agent": {
    "models": {
      "anthropic/claude-opus-4-5": { "alias": "opus" },
      "anthropic/claude-sonnet-4-5": { "alias": "sonnet" },
      "openai-codex/gpt-5.2": { "alias": "gpt" }
    }
  }
}

With this config, /opus, /sonnet, and /gpt all work as model switches.

Command collision handling

If an alias collides with an existing command (e.g. /status, /help, /reset), the existing command takes priority. The alias is filtered out and won't be recognized as a model switch.

This prevents accidental shadowing of built-in commands.

Changes

• src/auto-reply/model.ts — extractModelDirective() now accepts an optional aliases array and matches /<alias> patterns
• src/auto-reply/reply/directive-handling.ts — passes aliases to the directive parser
• src/auto-reply/reply.ts — collects aliases from config, filters out reserved commands, and passes them through
• src/auto-reply/model.test.ts — new: 17 tests covering alias matching, edge cases, and priority

Notes

• No breaking changes — /model <name> still works exactly as before
• Only configured aliases are recognized (arbitrary /foo won't be treated as a model switch)
• Reserved commands are never shadowed by aliases