feat: add per-user tenant scoping

internal/store/files.go

@@ -15,10 +15,10 @@ import (
 
 func (db *DB) InsertStoredFile(ctx context.Context, file thoughttypes.StoredFile) (thoughttypes.StoredFile, error) {
 	row := db.pool.QueryRow(ctx, `
-		insert into stored_files (thought_id, project_id, name, media_type, kind, encoding, size_bytes, sha256, content)
-		values ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+		insert into stored_files (thought_id, project_id, tenant_key, name, media_type, kind, encoding, size_bytes, sha256, content)
+		values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
 		returning id, guid, thought_id, project_id, name, media_type, kind, encoding, size_bytes, sha256, created_at, updated_at
-	`, file.ThoughtID, file.ProjectID, file.Name, file.MediaType, file.Kind, file.Encoding, file.SizeBytes, file.SHA256, file.Content)
+	`, file.ThoughtID, file.ProjectID, tenantKeyPtr(ctx), file.Name, file.MediaType, file.Kind, file.Encoding, file.SizeBytes, file.SHA256, file.Content)
 
 	var model generatedmodels.ModelPublicStoredFiles
 	if err := row.Scan(
@@ -42,11 +42,11 @@ func (db *DB) InsertStoredFile(ctx context.Context, file thoughttypes.StoredFile
 }
 
 func (db *DB) GetStoredFile(ctx context.Context, id uuid.UUID) (thoughttypes.StoredFile, error) {
+	args := []any{id}
 	row := db.pool.QueryRow(ctx, `
 		select id, guid, thought_id, project_id, name, media_type, kind, encoding, size_bytes, sha256, content, created_at, updated_at
 		from stored_files
-		where guid = $1
-	`, id)
+		where guid = $1`+tenantSQL(ctx, &args, "tenant_key"), args...)
 
 	var model generatedmodels.ModelPublicStoredFiles
 	if err := row.Scan(
@@ -77,6 +77,7 @@ func (db *DB) ListStoredFiles(ctx context.Context, filter thoughttypes.StoredFil
 	args := make([]any, 0, 4)
 	conditions := make([]string, 0, 3)
 
+	addTenantCondition(ctx, &args, &conditions, "tenant_key")
 	if filter.ThoughtID != nil {
 		args = append(args, *filter.ThoughtID)
 		conditions = append(conditions, fmt.Sprintf("thought_id = $%d", len(args)))