feat(sqlite): CI Tests for Alembic and SQLite (#3358)

Co-authored-by: Matt Zhou <mattzh1314@gmail.com>

alembic/versions/416b9d2db10b_repurpose_jobusagestatistics_for_new_.py

@@ -12,6 +12,7 @@ import sqlalchemy as sa
 from sqlalchemy.dialects import postgresql
 
 from alembic import op
+from letta.settings import settings
 
 # revision identifiers, used by Alembic.
 revision: str = "416b9d2db10b"
@@ -21,6 +22,10 @@ depends_on: Union[str, Sequence[str], None] = None
 
 
 def upgrade() -> None:
+    # Skip this migration for SQLite
+    if not settings.letta_pg_uri_no_default:
+        return
+
     # ### commands auto generated by Alembic - please adjust! ###
     # Rename the table
     op.rename_table("job_usage_statistics", "steps")
@@ -74,6 +79,10 @@ def upgrade() -> None:
 
 
 def downgrade() -> None:
+    # Skip this migration for SQLite
+    if not settings.letta_pg_uri_no_default:
+        return
+
     # ### commands auto generated by Alembic - please adjust! ###
     # Remove step_id from messages first to avoid foreign key conflicts
     op.drop_constraint("fk_messages_step_id", "messages", type_="foreignkey")