fix: use boolean literal for reversible server_default

PostgreSQL rejects DEFAULT 1 for boolean columns; use DEFAULT true
which works on both PostgreSQL and SQLite (3.23.0+).

alembic/versions/20260713_0100_f1e2d3c4b5a6_add_reversible_to_routes.py

@@ -28,7 +28,7 @@ def upgrade() -> None:
             "reversible",
             sa.Boolean(),
             nullable=False,
-            server_default=sa.text("1"),
+            server_default=sa.text("true"),
         ),
     )
 

src/meshcore_hub/common/models/route.py

@@ -88,7 +88,7 @@ class Route(Base, UUIDMixin, TimestampMixin):
     reversible: Mapped[bool] = mapped_column(
         Boolean,
         default=True,
-        server_default="1",
+        server_default="true",
         nullable=False,
     )