feat: quality of life sweep from the feature discussions

Small requests from the discussions, each built end to end: planner and
map (cycling mode, date first headings, clear a day, stay times per day,
off-route stops, map lock, compact unplanned markers, pending stays,
cable car, transit quick picks), places (location filter, category from
OSM, open in maps, geo: link, image from an attachment, enrichment on
file import, places near a pin, place name language, Amap first in
China), lists and costs (packed counter, inherited sharing, Markdown
to-dos, payment notes, bookings CSV, my plan PDF), sharing (unplanned
places, travel only, without photos), journey (photo zoom, drafts,
photo order, trip suggestion, day jump), atlas (region counter, region
bucket list, places per country), vacay half company holidays, studio
copy and paste plus the book's own layouts, and RESTORE_FROM_BACKUP for
a first start restore.

client/src/components/Map/MapTogglePill.tsx

@@ -0,0 +1,50 @@
+import type { ReactNode } from 'react'
+import { Tooltip } from '../shared/Tooltip'
+import { MAP_CONTROL_SHADOW } from './mapControlShadow'
+
+/**
+ * One round on/off control in the frosted shell every map control wears, so a new
+ * one lines up with the compass, the layer switcher and the overview toggle.
+ */
+export function MapTogglePill({ active, onToggle, label, icon, testId, tooltipPlacement = 'left' }: {
+  active: boolean
+  onToggle: () => void
+  label: string
+  icon: ReactNode
+  testId?: string
+  /** Away from the edge the control hugs: left on the right edge, right on the left one. */
+  tooltipPlacement?: 'left' | 'right'
+}) {
+  return (
+    <div style={{
+      display: 'inline-flex', alignItems: 'center', padding: 4, borderRadius: 999, pointerEvents: 'auto',
+      background: 'var(--sidebar-bg)',
+      backdropFilter: 'blur(20px) saturate(180%)',
+      WebkitBackdropFilter: 'blur(20px) saturate(180%)',
+      boxShadow: MAP_CONTROL_SHADOW,
+    }}>
+      {/* TREK's own tooltip, not the browser's: the native one ignores the colour
+          scheme, waits a second and a half, and cannot be read on a touch device. */}
+      <Tooltip label={label} placement={tooltipPlacement}>
+        <button
+          type="button"
+          onClick={onToggle}
+          aria-label={label}
+          aria-pressed={active}
+          data-testid={testId}
+          className={active ? 'text-accent' : 'text-content-muted'}
+          style={{
+            display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+            width: 34, height: 34, borderRadius: 999, border: 'none', cursor: 'pointer',
+            background: 'transparent', padding: 0,
+            transition: 'background 0.14s, color 0.14s',
+          }}
+          onMouseEnter={e => { e.currentTarget.style.background = 'var(--bg-hover)' }}
+          onMouseLeave={e => { e.currentTarget.style.background = 'transparent' }}
+        >
+          {icon}
+        </button>
+      </Tooltip>
+    </div>
+  )
+}