Typing / in the chat composer now shows a filtered popup listing all
available commands with their description. Arrow keys or Tab to select,
Enter/Tab to insert, Esc to close, click also works.
- New module: static/js/slashAutocomplete.js
Reads the existing COMMANDS registry (and LEGACY_ALIASES) from
slashCommands.js — no command logic added here, just discovery UI.
Excludes easter-egg commands (flip, roll, 8ball, fortune, odyssey,
ascii). Promotes short legacy aliases (/new, /clear, /web, /compact,
/research, etc.) as first-class rows so users don't have to know the
full /session new form.
- slashCommands.js: export COMMANDS and LEGACY_ALIASES so the new
module can read the registry.
- chat.js: lazy-import slashAutocomplete on init, wire to #message
textarea.
- style.css: popup + row styles using existing CSS variables.
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