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/Controllers/Api/V1/DropOff/DropOffPointController.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1\DropOff;
+
+use App\Http\Controllers\Api\V1\ApiController;
+use App\Http\Resources\DropOffPointResource;
+use App\Models\DropOffPoint;
+use App\Services\DropOff\DropOffPointFinder;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class DropOffPointController extends ApiController
+{
+    public function nearby(Request $request, DropOffPointFinder $finder): JsonResponse
+    {
+        $data = $request->validate([
+            'lat' => ['required', 'numeric', 'between:-90,90'],
+            'lng' => ['required', 'numeric', 'between:-180,180'],
+            'radius_km' => ['nullable', 'numeric', 'min:0.1', 'max:50'],
+            'limit' => ['nullable', 'integer', 'min:1', 'max:50'],
+        ]);
+
+        $points = $finder->nearby(
+            (float) $data['lat'],
+            (float) $data['lng'],
+            (float) ($data['radius_km'] ?? 5.0),
+            (int) ($data['limit'] ?? 25),
+        );
+
+        return $this->ok(DropOffPointResource::collection($points));
+    }
+
+    public function show(DropOffPoint $dropOffPoint): JsonResponse
+    {
+        $dropOffPoint->load('barangay.cityMunicipality');
+
+        return $this->ok(new DropOffPointResource($dropOffPoint));
+    }
+}