panel: a click that moves a point or two is still a click

any pointer movement between press and release started a panel drag and
swallowed the click, so clicking a row often did nothing and had to be
repeated: in a logged session, 12 of 17 clicks were taken as drags. the
5 that counted waited at most 4 ms and ran `dingger focus` in 60-120 ms.
a drag now needs more than 4 points of movement (isDrag, selftest).

1 files changed, 2 insertions, 0 deletions

diff --git a/menubar/main.swift b/menubar/main.swift
index c37386e..1b6ce4f 100644
--- a/menubar/main.swift
+++ b/menubar/main.swift
@@ -408,6 +408,8 @@ if arguments.contains("--selftest") {
     if importanceListed != importanceExpected {
         failures.append("order: status first, then importance, then time: \(importanceListed)")
     }
+    if isDrag(from: .zero, to: NSPoint(x: 2, y: 3)) { failures.append("click: a few points of jitter is a click") }
+    if !isDrag(from: .zero, to: NSPoint(x: 0, y: 5)) { failures.append("click: moving 5 points is a drag") }
     let high = Row(paneId: "%1", agent: "pi", name: "Fix it", status: .done, session: "s", window: "w", since: 1, importance: .high)
     if rowTitle(high).string != "✓  ! Fix it" || rowTitlePrefix(high) != "✓  ! " {
         failures.append("title: a high agent is marked: \(rowTitle(high).string)")