Support longer API key field in DB to store GCP service account keyfile

src/khoj/database/migrations/0087_alter_aimodelapi_api_key.py

@@ -0,0 +1,17 @@
+# Generated by Django 5.0.13 on 2025-03-23 04:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("database", "0086_alter_texttoimagemodelconfig_model_type"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="aimodelapi",
+            name="api_key",
+            field=models.CharField(max_length=4000),
+        ),
+    ]

src/khoj/database/models/__init__.py

@@ -188,7 +188,7 @@ class Subscription(DbBaseModel):
 
 class AiModelApi(DbBaseModel):
     name = models.CharField(max_length=200)
-    api_key = models.CharField(max_length=200)
+    api_key = models.CharField(max_length=4000)
     api_base_url = models.URLField(max_length=200, default=None, blank=True, null=True)
 
     def __str__(self):