diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a717f9c..f0ee838 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -75,7 +75,7 @@ jobs:
             # ✅ Test env
             - name: Setup test environment
               run: |
-                  cp .env .env.test
+                  touch .env.test
                   echo "DB_URL=postgresql://coderz-space:coderz-space@localhost:5432/coderz?sslmode=disable" >> .env.test
                   echo "DB_DSN=postgresql://coderz-space:coderz-space@localhost:5432/coderz?sslmode=disable" >> .env.test
 
diff --git a/apps/server/go.mod b/apps/server/go.mod
index 0c09ae6..f8d76d9 100644
--- a/apps/server/go.mod
+++ b/apps/server/go.mod
@@ -1,6 +1,6 @@
 module github.com/coderz-space/coderz.space
 
-go 1.25.0
+go 1.24.3
 
 require (
 	github.com/go-playground/validator/v10 v10.30.1
diff --git a/apps/server/internal/db/sqlc/assignment.sql.go b/apps/server/internal/db/sqlc/assignment.sql.go
index 42f11b9..d9a5667 100644
--- a/apps/server/internal/db/sqlc/assignment.sql.go
+++ b/apps/server/internal/db/sqlc/assignment.sql.go
@@ -94,11 +94,11 @@ SELECT $1, unnest($2::uuid[]), 'pending'
 
 type InitializeAssignmentProblemsParams struct {
 	AssignmentID pgtype.UUID   `db:"assignment_id" json:"assignment_id"`
-	ProblemIds   []pgtype.UUID `db:"problem_ids" json:"problem_ids"`
+	ProblemIDs   []pgtype.UUID `db:"problem_ids" json:"problem_ids"`
 }
 
 func (q *Queries) InitializeAssignmentProblems(ctx context.Context, arg InitializeAssignmentProblemsParams) error {
-	_, err := q.db.Exec(ctx, initializeAssignmentProblems, arg.AssignmentID, arg.ProblemIds)
+	_, err := q.db.Exec(ctx, initializeAssignmentProblems, arg.AssignmentID, arg.ProblemIDs)
 	return err
 }
 
diff --git a/apps/server/internal/modules/assignment/service.go b/apps/server/internal/modules/assignment/service.go
index 149a2ca..881f2e0 100644
--- a/apps/server/internal/modules/assignment/service.go
+++ b/apps/server/internal/modules/assignment/service.go
@@ -407,14 +407,14 @@ func (s *Service) CreateAssignment(ctx context.Context, req CreateAssignmentRequ
 	}
 
 	// Initialize all problems with pending status (Requirement 28.6)
-	problemIds := make([]pgtype.UUID, len(problems))
+	problemIDs := make([]pgtype.UUID, len(problems))
 	for i := range problems {
-		problemIds[i] = problems[i].ID
+		problemIDs[i] = problems[i].ID
 	}
 
 	err = qtx.InitializeAssignmentProblems(ctx, db.InitializeAssignmentProblemsParams{
 		AssignmentID: assignment.ID,
-		ProblemIds:   problemIds,
+		ProblemIDs:   problemIDs,
 	})
 	if err != nil {
 		return nil, err