feat(config): integrate iris and streamline keybindings

dot_config/bash/keybinds.bash

@@ -1,7 +1,7 @@
 # ~/.config/bash/keybinds.bash — readline ports of the television keys in
 # fish_user_key_bindings.fish / zsh keybinds.zsh:
 #   ctrl-o → gho (ghq-repos cable, cd)     ctrl-e → tv git-files (nvim)
-#   ctrl-p → pj (pj cable)                 down   → pj on an empty prompt
+#   ctrl-p → pj (pj cable)
 #   ctrl-t → tv smart autocomplete (tv init bash ships no ctrl-t)
 # Keys owned by kitty.conf never reach the shell: ctrl-h/j/k/l (pass_keys.py).
 #
@@ -19,12 +19,12 @@ _kb_git_files() {
 }
 bind -x '"\C-e": _kb_git_files'
 
-# ctrl-p, and down on an empty prompt. pj reports through $PJ_STATE: `open`
-# = cancelled, `ran` = a task printed output, empty = no task sources.
+# ctrl-p. pj reports through $PJ_STATE: `open` = cancelled, `ran` = a task
+# printed output, empty = no task sources.
 _kb_pj() {
     local state
     state=$(mktemp) || return
-    PJ_STATE=$state pj "$@" </dev/tty
+    PJ_STATE=$state pj </dev/tty
     [ "$(<"$state")" = open ] && _kb_up
     rm -f "$state"
 }
@@ -66,21 +66,6 @@ bind -x '"\C-x1": _kb_gho'
 bind -x '"\C-x0": _kb_restore'
 bind '"\C-o": "\C-x1\C-x2\C-x3\C-x0"'
 
-# down: the pj cable on an idle, empty prompt, otherwise history search
-# (fish's _pj_bind_down). bind -x can't call readline functions, so _kb_down
-# rebinds \C-x5, which the macro sends right after it.
-_kb_down() {
-    if [ -n "$READLINE_LINE" ]; then
-        bind '"\C-x5": history-search-forward'
-        return
-    fi
-    PJ_QUIET=1 _kb_pj
-    bind '"\C-x5": redraw-current-line'
-}
-bind -x '"\C-x4": _kb_down'
-bind '"\e[B": "\C-x4\C-x5"'
-bind '"\eOB": "\C-x4\C-x5"'
-
 # ctrl-t: pick with the channel tv guesses from the text left of the cursor
 # (shell_integration.channel_triggers) and insert the picks there, quoted.
 _kb_tv_autocomplete() {