feat(backend): complete Module 13 reports + analytics

daily_collection_stats, weekly_route_performance, monthly_store_sales
aggregation tables. Aggregator service is idempotent — wipes the slice
and re-inserts. php artisan reports:aggregate (default: yesterday) for
the nightly cron. Admin endpoints: daily-collection / trip-performance
/ store-sales chart series + totals, compliance.csv stream of dumpsite
releases (DENR-style), POST rebuild for on-demand aggregation.

Payments, notifications, and live tracking sub-modules of Module 13
are deferred per scope.

164 feature tests passing.

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

app/Models/DailyCollectionStat.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class DailyCollectionStat extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'date', 'barangay_id', 'total_scans', 'total_weight_kg',
+        'unique_households', 'missed_pickups',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'date' => 'date',
+            'total_scans' => 'integer',
+            'total_weight_kg' => 'integer',
+            'unique_households' => 'integer',
+            'missed_pickups' => 'integer',
+        ];
+    }
+
+    public function barangay(): BelongsTo
+    {
+        return $this->belongsTo(Barangay::class);
+    }
+}