feat(config): replace ctrl-a agents bind with omp-session command

dot_config/fish/functions/fish_user_key_bindings.fish

@@ -11,17 +11,18 @@ function fish_user_key_bindings
         #   ctrl-g → lazygit overlay, ctrl-y → yazi vsplit,
         #   ctrl-h/j/k/l → vim-aware split nav (pass_keys.py).
         # ctrl-e: tv git-files (bat preview, enter opens nvim). ctrl-o, ctrl-p
-        # and down also open tv cables — same keys in zsh and bash; ctrl-a
-        # (tv agents: pick an AI agent and start it) is fish-only. tv runs
-        # --inline below the prompt; _tv_inline/_gho_bind/_pj_bind/_agents_bind
-        # put the prompt back in place (or below any output) afterwards.
+        # and down also open tv cables — same keys in zsh and bash. tv runs
+        # --inline below the prompt; _tv_inline/_gho_bind/_pj_bind put the
+        # prompt back in place (or below any output) afterwards. ctrl-a:
+        # omp-session resumes or starts omp for the repo (same in zsh); when it
+        # opens the omp-sessions cable and it is cancelled, it steps back up.
         bind -M $mode ctrl-e '_tv_inline git-files; commandline -f repaint'
         bind -M $mode ctrl-b purple repaint
         bind -M $mode ctrl-y clip-last
 
         bind -M $mode ctrl-o _gho_bind
         bind -M $mode ctrl-p _pj_bind
-        bind -M $mode ctrl-a _agents_bind
+        bind -M $mode ctrl-a 'omp-session; commandline -f repaint'
         bind -M $mode ctrl-w 'atuin ai inline; commandline -f repaint'
 
         # Arrow keys: atuin owns up (bound from config.fish, survives the