refactor(tmux): improve config with vi copy mode and unified set

- Unify setw to set (modern tmux auto-detects option scope)
- Add vi copy mode with v/y bindings
- Add clipboard and passthrough support
- Increase history-limit to 50000
- Add base-index 1 and pane-base-index 1
- Enable monitor-bell, change bell-action to other
- Quote ${HOME} in new-window binding