feat(client): show Dawarich stays, routes and marks where they belong

The trip planner and the journal get a "From Dawarich" list: the stays
recorded for those dates, each one a row that can be dismissed or turned
into a place or an entry after a review step that shows time, name, note
and day. A place that came from a recording carries the Dawarich mark
next to its name so its origin stays visible afterwards.

The recorded route lies over the trip and journal maps as an overlay,
coloured per day and cut along the reader's own timezone rather than
UTC. It is fetched for the window on screen and never stored.

The Atlas gets its own panel beside the map for the countries and cities
the recordings prove, and the wish list is ticked off there, on the day
of the visit, undoably. The phone has its own take on all of it, in the
mobile shell's colours and with native sheets.

client/src/components/Atlas/useGlassGlare.ts

@@ -0,0 +1,48 @@
+import { useRef, type RefObject } from 'react'
+
+export interface GlassGlare {
+  /** Goes on the panel itself — the glare is measured against its box. */
+  panelRef: RefObject<HTMLDivElement | null>
+  /** The soft light under the cursor. */
+  glareRef: RefObject<HTMLDivElement | null>
+  /** The lit stretch of border around it. */
+  borderGlareRef: RefObject<HTMLDivElement | null>
+  onMouseMove: (e: { clientX: number; clientY: number }) => void
+  onMouseLeave: () => void
+}
+
+/**
+ * The Atlas panels' liquid-glass hover: a pool of light under the cursor and the
+ * piece of border nearest to it lighting up.
+ *
+ * Extracted so a second panel beside the first one behaves identically. Two
+ * hand-copied versions of a gradient are two versions that drift, and the whole
+ * point of the effect is that the panels look like one material.
+ *
+ * Written straight to the DOM rather than through state: this runs on every
+ * mousemove, and a re-render per frame would cost more than the effect is worth.
+ */
+export function useGlassGlare(dark: boolean): GlassGlare {
+  const panelRef = useRef<HTMLDivElement>(null)
+  const glareRef = useRef<HTMLDivElement>(null)
+  const borderGlareRef = useRef<HTMLDivElement>(null)
+
+  const onMouseMove = (e: { clientX: number; clientY: number }): void => {
+    if (!panelRef.current || !glareRef.current || !borderGlareRef.current) return
+    const rect = panelRef.current.getBoundingClientRect()
+    const x = e.clientX - rect.left
+    const y = e.clientY - rect.top
+    glareRef.current.style.background = `radial-gradient(circle 300px at ${x}px ${y}px, ${dark ? 'rgba(255,255,255,0.025)' : 'rgba(255,255,255,0.25)'} 0%, transparent 70%)`
+    glareRef.current.style.opacity = '1'
+    borderGlareRef.current.style.opacity = '1'
+    borderGlareRef.current.style.maskImage = `radial-gradient(circle 150px at ${x}px ${y}px, black 0%, transparent 100%)`
+    borderGlareRef.current.style.webkitMaskImage = `radial-gradient(circle 150px at ${x}px ${y}px, black 0%, transparent 100%)`
+  }
+
+  const onMouseLeave = (): void => {
+    if (glareRef.current) glareRef.current.style.opacity = '0'
+    if (borderGlareRef.current) borderGlareRef.current.style.opacity = '0'
+  }
+
+  return { panelRef, glareRef, borderGlareRef, onMouseMove, onMouseLeave }
+}