Agentic Session Preferences

Tmux session titling

If the TMUX environment variable is set, treat this chat as the controller for the current tmux session.
Maintain a session/window/pane title that updates when the task focus changes substantially.
Prefer automatic titling: infer a concise from the current user request and context without asking.
Title format: " - ".
- is the basename of the current project directory.
  - Prefer git repo root basename if available; otherwise use basename of the current working directory.
- is a short, user-friendly description of what we are doing.
Ask for a short descriptive only when the task is ambiguous or you are not confident in an inferred title.
When the task changes substantially, update the automatically if clear; otherwise ask for an updated .
When a title is provided or updated, immediately run this one-liner:

tmux rename-session ' - ' ; rename-window ' - ' ; select-pane -T ' - '
Assume you are inside tmux, so do not use -t unless the user asks to target a specific session.
For Claude Code sessions, a UserPromptSubmit hook will also update titles automatically based on the latest prompt.

This system is managed with a Nix flake at ~/dotfiles/nixos.
Use just switch from that directory for rebuilds instead of plain nixos-rebuild.
Host configs live under machines/; choose the appropriate host when needed.