Tap a map pin to preview and expand element details (#8)

Tapping a marker brings up a bottom preview card with name, address,
and a description snippet. Tapping the card opens a full-screen modal
with photos, schedule, labels, and the rest. Tapping elsewhere on the
map dismisses the preview.

Marker and Map onPress are both codegen BubblingEventHandlers, so the
marker's "onPress" bubbles to the map's onPress listener — handler
calls stopPropagation() to keep the map from clearing the selection
right after.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: dfalling

src/graphql/__generated__/types.ts

@@ -0,0 +1,30 @@
+query ElementDetail($id: String!) {
+  element(id: $id) {
+    id
+    name
+    icon
+    description
+    completed
+    labels
+    location {
+      id
+      address
+      latitude
+      longitude
+    }
+    photos {
+      id
+      thumbnail
+      regular
+      description
+    }
+    schedule {
+      id
+      allDay
+      startDate
+      endDate
+      startTime
+      endTime
+    }
+  }
+}