Edit in place and add a global All tab

Editing a prompt opened a separate floating window that ignored the
panel's theme; it is now an in-panel modal that matches. A Workspace/All
segmented tab above the list shows every prompt labeled with its
workspace, so the whole library is browsable without typing a search.

README.md

@@ -19,6 +19,10 @@ to your work. Select what you need and send it back to your clipboard.
   the Cmd+K switcher (which opens a name modal); Cmd+K switches, and the
   up/down arrows in the switcher reorder them. (The code and the saved JSON
   still call these `sections` so existing data keeps working.)
+- **An "All" tab** — a global view of every prompt across every workspace,
+  each labeled with the workspace it lives in.
+- **Edit in place** — right-click → Edit opens an in-panel modal on the same
+  theme, not a separate window.
 - **Right-click for actions** — Copy, Copy as List, Copy as Lines, Mark as Done,
   Edit, Open, Merge Notes, Move To, Delete — each acting on the whole selection.
 - **Search** — Cmd+F searches across all workspaces.