feat(postgresus): Add schema filter for pg_dump and pg_restore (#131)

Add optional "Schemas" field to PostgreSQL database settings allowing
users to specify which schemas to include in backups (comma-separated).

This solves permission issues when backing up some of databases that
have restricted internal schemas (auth, storage, realtime).

Changes:
- Add schemas column to postgresql_databases table (migration)
- Update PostgresqlDatabase model with Schemas field
- Modify buildPgDumpArgs() to append --schema flags for each schema
- Modify pg_restore args to support --schema filtering on restore
- Add Schemas input field to frontend edit form with tooltip
- Display schemas in read-only database view

Example usage: Setting schemas to "public,drizzle" generates:
  pg_dump ... --schema public --schema drizzle
  pg_restore ... --schema public --schema drizzle

Author: leonardocouy

backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go

@@ -334,6 +334,17 @@ func (uc *CreatePostgresqlBackupUsecase) buildPgDumpArgs(pg *pgtypes.PostgresqlD
 		"--verbose",
 	}
 
+	// Add schema filters if specified
+	if pg.Schemas != nil && *pg.Schemas != "" {
+		schemas := strings.Split(*pg.Schemas, ",")
+		for _, schema := range schemas {
+			schema = strings.TrimSpace(schema)
+			if schema != "" {
+				args = append(args, "--schema", schema)
+			}
+		}
+	}
+
 	compressionArgs := uc.getCompressionArgs(pg.Version)
 	return append(args, compressionArgs...)
 }

backend/internal/features/databases/databases/postgresql/model.go

@@ -29,6 +29,7 @@ type PostgresqlDatabase struct {
 	Password string  `json:"password" gorm:"type:text;not null"`
 	Database *string `json:"database" gorm:"type:text"`
 	IsHttps  bool    `json:"isHttps"  gorm:"type:boolean;default:false"`
+	Schemas  *string `json:"schemas"  gorm:"type:text"`
 }
 
 func (p *PostgresqlDatabase) TableName() string {
@@ -85,6 +86,7 @@ func (p *PostgresqlDatabase) Update(incoming *PostgresqlDatabase) {
 	p.Username = incoming.Username
 	p.Database = incoming.Database
 	p.IsHttps = incoming.IsHttps
+	p.Schemas = incoming.Schemas
 
 	if incoming.Password != "" {
 		p.Password = incoming.Password

backend/internal/features/restores/usecases/postgresql/restore_backup_uc.go

@@ -83,6 +83,17 @@ func (uc *RestorePostgresqlBackupUsecase) Execute(
 		"--no-acl",    // Skip restoring access privileges (GRANT/REVOKE commands)
 	}
 
+	// Add schema filters if specified
+	if pg.Schemas != nil && *pg.Schemas != "" {
+		schemas := strings.Split(*pg.Schemas, ",")
+		for _, schema := range schemas {
+			schema = strings.TrimSpace(schema)
+			if schema != "" {
+				args = append(args, "--schema", schema)
+			}
+		}
+	}
+
 	return uc.restoreFromStorage(
 		originalDB,
 		tools.GetPostgresqlExecutable(

backend/migrations/20251210053223_add_schemas_column.sql

@@ -0,0 +1,15 @@
+-- +goose Up
+-- +goose StatementBegin
+
+ALTER TABLE postgresql_databases
+    ADD COLUMN schemas TEXT;
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+
+ALTER TABLE postgresql_databases
+    DROP COLUMN IF EXISTS schemas;
+
+-- +goose StatementEnd

frontend/src/entity/databases/model/postgresql/PostgresqlDatabase.ts

@@ -11,4 +11,5 @@ export interface PostgresqlDatabase {
   password: string;
   database?: string;
   isHttps: boolean;
+  schemas?: string;
 }

frontend/src/features/backups/ui/BackupsComponent.tsx

@@ -649,7 +649,7 @@ export const BackupsComponent = ({ database, isCanManageDBs, scrollContainerRef
 
       {showingRestoresBackupId && (
         <Modal
-          width={400}
+          width={420}
           open={!!showingRestoresBackupId}
           onCancel={() => setShowingRestoresBackupId(undefined)}
           title="Restore from backup"

frontend/src/features/databases/ui/edit/EditDatabaseSpecificDataComponent.tsx

@@ -275,6 +275,32 @@ export const EditDatabaseSpecificDataComponent = ({
             </div>
           )}
 
+          <div className="mb-1 flex w-full items-center">
+            <div className="min-w-[150px]">Schemas</div>
+            <Input
+              value={editingDatabase.postgresql?.schemas}
+              onChange={(e) => {
+                if (!editingDatabase.postgresql) return;
+
+                setEditingDatabase({
+                  ...editingDatabase,
+                  postgresql: { ...editingDatabase.postgresql, schemas: e.target.value.trim() },
+                });
+                setIsConnectionTested(false);
+              }}
+              size="small"
+              className="max-w-[200px] grow"
+              placeholder="public,myschema (optional)"
+            />
+
+            <Tooltip
+              className="cursor-pointer"
+              title="Comma-separated list of schemas to include. Leave empty for all schemas."
+            >
+              <InfoCircleOutlined className="ml-2" style={{ color: 'gray' }} />
+            </Tooltip>
+          </div>
+
           <div className="mb-3 flex w-full items-center">
             <div className="min-w-[150px]">Use HTTPS</div>
             <Switch

frontend/src/features/databases/ui/show/ShowDatabaseSpecificDataComponent.tsx

@@ -53,6 +53,11 @@ export const ShowDatabaseSpecificDataComponent = ({ database }: Props) => {
             <div>{database.postgresql?.database || ''}</div>
           </div>
 
+          <div className="mb-1 flex w-full items-center">
+            <div className="min-w-[150px]">Schemas</div>
+            <div>{database.postgresql?.schemas || 'All (full backup)'}</div>
+          </div>
+
           <div className="mb-1 flex w-full items-center">
             <div className="min-w-[150px]">Use HTTPS</div>
             <div>{database.postgresql?.isHttps ? 'Yes' : 'No'}</div>