Initial commit: Laravel OSINT platform

Multi-user OSINT investigation tool with owner-controlled per-user and
per-group access grants. Includes Sherlock, theHarvester, crt.sh, WHOIS,
and ip-api.com collectors wired through a pluggable Runner/queue pipeline,
investigation search, and printable/CSV/JSON reporting.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/Models/Source.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+#[Fillable(['key', 'name', 'description', 'target_types', 'runner', 'enabled'])]
+class Source extends Model
+{
+    protected function casts(): array
+    {
+        return [
+            'target_types' => 'array',
+            'enabled' => 'boolean',
+        ];
+    }
+
+    public function findings(): HasMany
+    {
+        return $this->hasMany(Finding::class);
+    }
+}