feat(backend): complete Module 5 (drop-off points + auto-assign)

drop_off_points (with SPATIAL INDEX on coordinates) +
drop_off_capacity_logs. Public nearby query via ST_Distance_Sphere
returns DOPs sorted by distance with distance_meters in payload.
Admin CRUD plus capacity-log endpoint. Household creation auto-assigns
to the nearest active DOP within 25km; resident can re-run the lookup
via POST /households/{uuid}/reassign-drop-off.

97 feature tests passing.

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

app/Http/Resources/DropOffPointResource.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class DropOffPointResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->uuid,
+            'name' => $this->name,
+            'code' => $this->code,
+            'address_line' => $this->address_line,
+            'coordinates' => $this->coordinates ? [
+                'lat' => $this->coordinates->latitude,
+                'lng' => $this->coordinates->longitude,
+            ] : null,
+            'capacity_kg' => $this->capacity_kg,
+            'operating_hours' => $this->operating_hours,
+            'accepted_waste_types' => $this->accepted_waste_types,
+            'status' => $this->status,
+            'photo_path' => $this->photo_path,
+            'contact_person' => $this->contact_person,
+            'contact_phone' => $this->contact_phone,
+            'distance_meters' => $this->when(
+                isset($this->distance_meters),
+                fn () => round((float) $this->distance_meters, 1),
+            ),
+            'barangay' => BarangayResource::make($this->whenLoaded('barangay')),
+        ];
+    }
+}