Move Elsewhen into Omarchy as omarchy.elsewhen (#13429)

* Move Elsewhen into Omarchy as omarchy.elsewhen

The world clock ships in the shell tree instead of its own package. A
migration renames existing bar entries with their settings and removes
the retired package.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Remove Elsewhen's shelved Earth row, overlap band and sky tint

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Tidy Elsewhen's models, data helper and docs, and drop currency

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Restructure Elsewhen's panel and globe on the shared shell components

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Show Elsewhen's bar globe upright

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Use the shared city search for Elsewhen's globe jump bar

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Keep legacy Elsewhen entries single and retry offline geocodes

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Fetch Elsewhen's weather with curl instead of a Python helper

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

shell/plugins/panels/elsewhen/Arc.js

@@ -0,0 +1,52 @@
+// A line of text laid along a shallow circular arc. `widths` are character
+// advances; `rise` is how far the ends sit from the middle, in pixels; `smile`
+// bends the ends up. Returns { width, height, chars: [{ x, y, rotation }] }
+// with each box's top-left and its turn in degrees about its center.
+function layout(widths, rise, smile) {
+  var chars = []
+  var total = 0
+  var i
+  for (i = 0; i < widths.length; i++) total += widths[i]
+
+  if (total <= 0 || rise <= 0) {
+    var x = 0
+    for (i = 0; i < widths.length; i++) {
+      chars.push({ x: x, y: 0, rotation: 0 })
+      x += widths[i]
+    }
+    return { width: total, height: 0, chars: chars }
+  }
+
+  // Keeps the trig in range for absurd rises.
+  var sag = Math.min(rise, total / 4)
+
+  // Shallow-arc sagitta: R = w^2 / 8s.
+  var radius = (total * total) / (8 * sag)
+  var halfAngle = total / (2 * radius)
+  var maxDrop = radius * (1 - Math.cos(halfAngle))
+  var chordWidth = 2 * radius * Math.sin(halfAngle)
+
+  var travelled = 0
+  var left = 0, right = chordWidth
+  for (i = 0; i < widths.length; i++) {
+    var w = widths[i]
+    var a = (travelled + w / 2 - total / 2) / radius
+    var drop = radius * (1 - Math.cos(a))
+    var x = chordWidth / 2 + radius * Math.sin(a) - w / 2
+    chars.push({
+      x: x,
+      y: smile ? maxDrop - drop : drop,
+      rotation: (smile ? -a : a) * 180 / Math.PI
+    })
+    left = Math.min(left, x)
+    right = Math.max(right, x + w)
+    travelled += w
+  }
+
+  // End boxes hang past the chord; shift so x starts at zero and width covers them.
+  for (i = 0; i < chars.length; i++) chars[i].x -= left
+
+  return { width: right - left, height: maxDrop, chars: chars }
+}
+
+if (typeof module !== "undefined") module.exports = { layout: layout }