feat(zsh): add sensible keybinds for navigation, editing, history, completion, and autosuggestions

Improves productivity and usability for both emacs and vi mode users.

🤖 Generated with [opencode](https://opencode.ai)

Co-Authored-By: opencode <noreply@opencode.ai>

.zshrc

@@ -65,6 +65,9 @@ setopt hist_reduce_blanks
 # Autosuggestions
 if [ -f /usr/share/zsh/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh ]; then
   source /usr/share/zsh/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh
+  # Accept autosuggestion with Ctrl+F or Right Arrow
+  bindkey '^F' autosuggest-accept
+  bindkey '^[[C' autosuggest-accept
 fi
 # Syntax highlighting
 if [ -f /usr/share/zsh/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh ]; then
@@ -74,6 +77,44 @@ fi
 fpath+=/usr/share/zsh/site-functions
 autoload -Uz compinit && compinit
 
+# =====================
+# Sensible keybinds
+# =====================
+
+# Emacs mode by default (comment out for vi mode)
+bindkey -e
+# Uncomment below for vi mode
+# bindkey -v
+
+# History search
+bindkey '^R' history-incremental-search-backward
+bindkey '^S' history-incremental-search-forward
+
+# Navigation
+bindkey '^A' beginning-of-line
+bindkey '^E' end-of-line
+bindkey '^[b' backward-word
+bindkey '^[f' forward-word
+
+# Editing
+bindkey '^U' kill-whole-line
+bindkey '^W' backward-kill-word
+bindkey '^K' kill-line
+bindkey '^Y' yank
+
+# Completion
+bindkey '^I' expand-or-complete
+bindkey '^ ' menu-complete
+
+# fzf keybinds (if fzf is loaded)
+if [ -n "$FZF_TMUX" ] || [ -f /usr/share/fzf/key-bindings.zsh ]; then
+  # Ctrl+T: fzf file search
+  bindkey '^T' fzf-file-widget
+  # Ctrl+R: fzf history search (already set above)
+  # Alt+C: fzf cd widget
+  bindkey '^[c' fzf-cd-widget
+fi
+
 
 # =====================
 # Command-not-found handler (Arch/pkgfile)