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/Policies/InvestigationPolicy.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Policies;
+
+use App\Models\Investigation;
+use App\Models\User;
+
+class InvestigationPolicy
+{
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    public function view(User $user, Investigation $investigation): bool
+    {
+        return $investigation->isAccessibleBy($user);
+    }
+
+    public function create(User $user): bool
+    {
+        return true;
+    }
+
+    public function update(User $user, Investigation $investigation): bool
+    {
+        return $investigation->isEditableBy($user);
+    }
+
+    public function delete(User $user, Investigation $investigation): bool
+    {
+        return $investigation->owner_id === $user->id;
+    }
+
+    public function restore(User $user, Investigation $investigation): bool
+    {
+        return $investigation->owner_id === $user->id;
+    }
+
+    public function forceDelete(User $user, Investigation $investigation): bool
+    {
+        return $investigation->owner_id === $user->id;
+    }
+
+    /**
+     * Only the owner can grant/revoke access to users or groups.
+     */
+    public function manageAccess(User $user, Investigation $investigation): bool
+    {
+        return $investigation->owner_id === $user->id;
+    }
+}