feat: add the pearl-prefix-map keymap and regroup the transient menu

The command surface had no muscle-memory path. Everything went through M-x or the transient, and the transient grouped commands by an ad-hoc mix (issue-at-point, create, org-sync) rather than by what you're doing.

I added pearl-prefix-map, an opt-in prefix keymap organized as save / edit / new / delete. It isn't bound at load, because a global multi-key prefix isn't reliably free across terminals and GUIs. Each binding is a (label . command) menu item, so which-key shows the label without pearl depending on which-key. The user binds the map to a free prefix (the README suggests C-; L). So C-; L s s saves the ticket at point, s a saves the whole file, e p edits priority, n t creates a ticket, m opens the transient.

I regrouped the transient to mirror those categories: Save, Edit, New, Delete for ticket actions, and Fetch, View, Setup for the workspace. I added the two save commands and relabeled every entry to the verb wording. The per-field push entries (edit-desc, edit-title) are gone since the save model subsumes them, though the commands still work from M-x. I pulled the org-sync commands (enable, disable, push-file) from the menu too, since they're plumbing, tracked separately for going private.

The keymap binds the existing command names. Aligning those names with the labels (edit-state, new-comment) is a separate task, as is the delete-comment command that will fill the d c slot.

1 files changed, 14 insertions, 2 deletions

diff --git a/README.org b/README.org
index 5954e19..b2ffbbe 100644
--- a/README.org
+++ b/README.org
@@ -144,13 +144,25 @@ Pearl writes one active Org file. Running a different query or view replaces tha
 
 *** Command menu
 
-=M-x pearl-menu= opens a transient dispatcher with commands grouped by fetch, view, issue-at-point, creation, Org sync, and setup. Bind that command if you use Pearl regularly:
+=M-x pearl-menu= opens a transient dispatcher. Ticket actions are grouped as save, edit, new, and delete; workspace actions as fetch, view, and setup. Bind that command if you use Pearl regularly:
 
 #+begin_src emacs-lisp
   (global-set-key (kbd "C-c L") #'pearl-menu)
 #+end_src
 
-Every command below is also available directly through =M-x=.
+*** Prefix keymap
+
+For muscle memory, Pearl also defines an opt-in prefix keymap, =pearl-prefix-map=, organized as save / edit / new / delete. It is not bound at load -- a global multi-key prefix isn't reliably free across terminals and GUIs, so you bind it to a prefix that suits your setup. A suggested binding:
+
+#+begin_src emacs-lisp
+  (global-set-key (kbd "C-; L") pearl-prefix-map)
+  ;; or, with use-package:
+  ;; :bind-keymap ("C-; L" . pearl-prefix-map)
+#+end_src
+
+With that prefix, =C-; L s s= saves the ticket at point, =C-; L s a= saves every ticket in the file, =C-; L e p= edits its priority, =C-; L n t= creates a ticket, and =C-; L m= opens the full transient. If you use =which-key=, each step shows a labeled menu.
+
+Every command is also available directly through =M-x=.
 
 *** Fetching and refreshing