mark as unread: make an idle agent done again, to come back to it

like "mark as unread" in mail: an agent you have seen (idle) becomes done
again, last among done agents of its importance, with no sound or
notification. it stays done until you come back to it: leave its tmux
window and return, or jump to it. marked while you look at it, it holds
until you look away (`held`); a new turn clears it. only idle agents can
be marked.

- daemon: `pane.mark_unread` on the hook socket; the watcher applies it
  after the tick's observations (mark_unread, advance's hold rule).
- `dingger unread [--pane]`: refuses done, working, blocked, and panes
  without an agent; returns once the agent shows as done.
- pi: /unread (refused while the agent works or is blocked).
- panel: right-click an idle agent in the full list, "Mark as unread".
- search: ⌘U or right-click marks the selected idle agent; the footer
  offers ⌘U when it applies; search stays open.

tests: unit (hold, jump, new turn, idle only), e2e step 22 (queue
position, hold, look away and back, jump, refusals, no sound, menu, the
extension), pi-live in real pi 1.4 (a mark, not a turn: an unknown
command would also end done), swift selftest (menu only for idle, footer).

1 files changed, 11 insertions, 1 deletions

diff --git a/menubar/main.swift b/menubar/main.swift
index 1b6ce4f..135c099 100644
--- a/menubar/main.swift
+++ b/menubar/main.swift
@@ -88,10 +88,12 @@ final class Menubar: NSObject, NSApplicationDelegate, NSMenuDelegate {
         item.menu = menu
         panel = PanelController(
             onClick: { [weak self] paneId in self?.jump(to: paneId) },
+            onMarkUnread: { [weak self] paneId in self?.markUnread(paneId) },
             onToggleFull: { [weak self] in self?.toggleFull() },
             onRestore: { [weak self] in self?.restore(sessions: []) },
             onDismissRestore: { [weak self] in self?.dismissRestore() })
-        searchWindow = SearchController(onJump: { [weak self] paneId in self?.jump(to: paneId) })
+        searchWindow = SearchController(onJump: { [weak self] paneId in self?.jump(to: paneId) },
+                                        onMarkUnread: { [weak self] paneId in self?.markUnread(paneId) })
         Settings.ensureFile()
         reloadSettings()
         refresh()
@@ -258,6 +260,14 @@ final class Menubar: NSObject, NSApplicationDelegate, NSMenuDelegate {
         }
     }
 
+    private func markUnread(_ paneId: String) {
+        log("unread: \(paneId)")
+        DispatchQueue.global().async {
+            markAgentUnread(paneId)
+            DispatchQueue.main.async { self.refresh() }
+        }
+    }
+
     // MARK: menu (rebuilt from fresh data every time it opens)
 
     func menuNeedsUpdate(_ menu: NSMenu) {