fix(db): change secret.value from VARCHAR(255) to TEXT (fixes #5353)

keep/api/models/db/migrations/versions/2025-06-19-10-00_a1b2c3d4e5f6.py

@@ -0,0 +1,36 @@
+"""fix: Change secret.value from VARCHAR to TEXT
+
+Revision ID: a1b2c3d4e5f6
+Revises: 9dd1be4539e0
+Create Date: 2025-06-19 10:00:00.000000
+
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "a1b2c3d4e5f6"
+down_revision = "9dd1be4539e0"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("secret") as batch_op:
+        batch_op.alter_column(
+            "value",
+            existing_type=sa.String(length=255),
+            type_=sa.Text(),
+            existing_nullable=False,
+        )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("secret") as batch_op:
+        batch_op.alter_column(
+            "value",
+            existing_type=sa.Text(),
+            type_=sa.String(length=255),
+            existing_nullable=False,
+        )

keep/api/models/db/secret.py

@@ -1,10 +1,11 @@
 from datetime import datetime
 
+from sqlalchemy import TEXT, Column
 from sqlmodel import Field, SQLModel
 
 class Secret(SQLModel, table=True):
     key: str = Field(primary_key=True)
-    value: str
+    value: str = Field(sa_column=Column(TEXT, nullable=False))
 
     last_updated: datetime = Field(
         default_factory=datetime.utcnow,