v3.0.21 Bug Fixes (#998)

* fix(journey): remove photo upload count limit and surface upload errors (#997)

Removes the arbitrary 10-file cap on journey entry photo uploads and 20-file
cap on gallery uploads. MulterErrors now return proper 4xx responses instead
of 500, and the client surfaces the server error message via toast rather than
silently trapping the user in the post editor overlay.

* fix(planner): remove correct assignment when place assigned to same day multiple times

When a place was assigned to the same day more than once, the "Remove from day"
button in PlaceInspector always deleted the first assignment (Array.find on
place.id) instead of the currently selected one. Now prefers selectedAssignmentId
when available.

Fixes #1005

* fix(map): enable 3D terrain for Mapbox outdoors style in trip planner

wantsTerrain() only matched satellite styles, so the outdoors-v12 style
was flat in the planner despite showing correct 3D terrain in the settings
preview. Added outdoors-v12 to the allowlist; marker drift is already
handled by syncMarkerAltitudes().

Fixes #1002

* fix(maps): send Referer header on Google API calls when APP_URL is set

Supports HTTP referrer restrictions on GCP API keys. Documents the
restriction types and photo troubleshooting steps in the wiki.

client/src/components/Map/mapboxSetup.ts

@@ -8,13 +8,15 @@ export function isStandardFamily(style: string): boolean {
   return style === 'mapbox://styles/mapbox/standard' || style === 'mapbox://styles/mapbox/standard-satellite'
 }
 
-// Terrain is only genuinely useful for the satellite imagery styles — on
-// clean flat styles like streets/light/dark it nudges route lines onto
-// the DEM while our HTML markers stay at Z=0, which causes the visible
-// offset when the map is pitched. Restrict terrain to satellite.
+// Terrain is only genuinely useful for styles that benefit from elevation
+// data. On flat vector styles (streets/light/dark) it nudges route lines
+// onto the DEM while HTML markers stay at Z=0, causing a visible drift
+// when the map is pitched. Satellite and Outdoors are the intended styles
+// for terrain; markers are re-pinned by syncMarkerAltitudes().
 export function wantsTerrain(style: string): boolean {
   return style === 'mapbox://styles/mapbox/satellite-v9'
       || style === 'mapbox://styles/mapbox/satellite-streets-v12'
+      || style === 'mapbox://styles/mapbox/outdoors-v12'
 }
 
 // 3D can be added to every style now — the standard family has it built-in

client/src/components/Planner/PlaceInspector.tsx

@@ -169,7 +169,10 @@ export default function PlaceInspector({
 
   const category = categories?.find(c => c.id === place.category_id)
   const dayAssignments = selectedDayId ? (assignments[String(selectedDayId)] || []) : []
-  const assignmentInDay = selectedDayId ? dayAssignments.find(a => a.place?.id === place.id) : null
+  const assignmentInDay = selectedDayId
+    ? ((selectedAssignmentId ? dayAssignments.find(a => a.id === selectedAssignmentId) : null)
+      ?? dayAssignments.find(a => a.place?.id === place.id))
+    : null
 
   const openingHours = googleDetails?.opening_hours || null
   const openNow = googleDetails?.open_now ?? null