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.

AGENTS.md

@@ -46,8 +46,10 @@ clicking an item copies it back to the clipboard.
   as a frame — a representable cannot resize itself through
   `intrinsicContentSize` once SwiftUI offers a larger size.
 - `Sources/Prompt/PanelView.swift` — the panel UI. Header (workspace switcher,
-  search, add photos), item list, composer. There is no in-header close button:
-  the window's own close button hides the panel. Composer `# Name` creates/
+  search, add photos), a segmented Workspace/All tab (All lists every prompt
+  labeled with its workspace), item list, in-panel edit modal, composer.
+  There is no in-header close button: the window's own close button hides the
+  panel. Composer `# Name` creates/
   switches sections. Click = select (Shift+click for a range); the selection
   bar offers Copy (single item), Copy as List, Copy as Lines and Delete;
   right-click = context menu acting on the whole selection (Copy, Copy as List,
@@ -55,8 +57,9 @@ clicking an item copies it back to the clipboard.
   selection before it hides the panel. Drop target for images/files.
 - `Sources/Prompt/PanelController.swift` — owns the floating `NSPanel`
   (`.nonactivatingPanel`, `.floating`, right-edge docked, frame autosaved as
-  `PromptPanel`), the Cmd+V image-paste monitor, and `EditWindowController`
-  (separate edit window with a `TextEditor`).
+  `PromptPanel`), and the Cmd+V paste monitor. Editing a note is an in-panel
+  modal in `PanelView`, not a window — a separate edit window used to float
+  loose from the panel and its theme.
 - `Sources/Prompt/HotkeyManager.swift` — double-Shift detection via a
   CGEvent tap on `flagsChanged` (left Shift ×2 = capture, right Shift ×2 =
   toggle panel), plus Carbon `RegisterEventHotKey` fallbacks (Cmd+Shift+Space