diff --git a/CLAUDE.md b/CLAUDE.md
index ec414276..0c066141 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -297,6 +297,12 @@ ## Array Data Access
     - Example: `data_get($data, 'name')` instead of `$data['name']`.
     - Use the third parameter for fallback values: `data_get($data, 'username', $sender->username)` instead of `$data['username'] ?? $sender->username`.
 
+## Eloquent Models & Morph Map
+
+- EVERY Eloquent model in `app/Models` MUST be registered in `Relation::enforceMorphMap([...])` inside `AppServiceProvider::configureMorphMap()`, keyed by a camelCase alias (e.g. `'postPlatform' => PostPlatform::class`).
+- When you add a new model, add it to the morph map in the same change. `tests/Unit/MorphMapTest.php` fails if any model is missing.
+- The alias is persisted in polymorphic columns, so never rename or remove an existing alias for a model that has stored rows.
+
 ## Imports
 
 - NEVER use inline class references (e.g., `\DB::listen`, `\Str::uuid()`). ALWAYS import classes at the top of the file with a `use` statement.
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index b7b2cdf0..8d5ed7d9 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -8,6 +8,11 @@
 use App\Models\AccessToken;
 use App\Models\Account;
 use App\Models\AiUsageLog;
+use App\Models\Automation;
+use App\Models\AutomationNodeRun;
+use App\Models\AutomationNodeState;
+use App\Models\AutomationRun;
+use App\Models\AutomationTriggerItem;
 use App\Models\Invite;
 use App\Models\Media;
 use App\Models\Notification;
@@ -114,6 +119,11 @@ protected function configureMorphMap(): void
             'accessToken' => AccessToken::class,
             'account' => Account::class,
             'aiUsageLog' => AiUsageLog::class,
+            'automation' => Automation::class,
+            'automationNodeRun' => AutomationNodeRun::class,
+            'automationNodeState' => AutomationNodeState::class,
+            'automationRun' => AutomationRun::class,
+            'automationTriggerItem' => AutomationTriggerItem::class,
             'invite' => Invite::class,
             'media' => Media::class,
             'notification' => Notification::class,
diff --git a/tests/Unit/MorphMapTest.php b/tests/Unit/MorphMapTest.php
new file mode 100644
index 00000000..859f5392
--- /dev/null
+++ b/tests/Unit/MorphMapTest.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+test('every Eloquent model is registered in the morph map', function () {
+    $mapped = array_values(Relation::morphMap());
+
+    $missing = collect(glob(app_path('Models/*.php')))
+        ->map(fn (string $file): string => 'App\\Models\\'.pathinfo($file, PATHINFO_FILENAME))
+        ->filter(fn (string $class): bool => class_exists($class)
+            && is_subclass_of($class, Model::class)
+            && ! (new ReflectionClass($class))->isAbstract())
+        ->reject(fn (string $class): bool => in_array($class, $mapped, true))
+        ->values()
+        ->all();
+
+    expect($missing)->toBe([]);
+});