Rayfin automatically pluralizes entity source table names using English rules, breaking existing non-English database schemas

What happened?

Rayfin pluralizes entity/table names using English rules by default when using @entity(), which breaks applications whose database table names are already defined in another language or must be preserved exactly.

Example:

Original table name fromSQL Server:
MovimentoContabil

Rayfin generated source table name:
MovimentoContabils

Another example:
ProjetosUnidadesOperacionaisMacroentregas
became:
ProjetosUnidadesOperacionaisMacroentregases

This causes schema drift and runtime errors because the existing application expects the exact original table names. In Portuguese, adding s or es this way produces invalid table names and changes the domain vocabulary.

Expected behavior:
Rayfin should provide a first-class way to explicitly set the database source table name independently from the entity name, for example:

@entity({ name: "MovimentoContabil", source: "MovimentoContabil" })

or avoid automatic pluralization unless explicitly requested.

Current workaround:
Register every entity with EntityNameResolver.setCustomPlural(name, name) before schema analysis and before frontend GraphQL query generation. This works, but it is not obvious from the default @entity() flow and is easy to miss during migrations from existing databases.

Steps to reproduce

1. Create a Rayfin app with a data entity whose existing SQL table name is already pluralized or uses non-English domain naming, for example:

@entity()
export class MovimentoContabil {
  @uuid()
  guid!: string;
}
Register the entity in rayfin/data/schema.ts.

Run the Rayfin deploy/generation command:

npx rayfin up
Inspect the generated DAB configuration or the created SQL tables.

Notice that Rayfin automatically pluralizes the entity/table name using English pluralization rules.

Expected table/source name:
MovimentoContabil
Actual generated table/source name:
MovimentoContabils
Another observed example:
Expected:
ProjetosUnidadesOperacionaisMacroentregas
Actual:
ProjetosUnidadesOperacionaisMacroentregases

### Environment


**Environment**
```markdown
- OS: Microsoft Windows 11 Pro 10.0.26200
- Node.js: v24.14.0
- npm: 11.9.0
- Rayfin CLI: 1.33.2, built Jun 12, 2026, 09:18 PM UTC
- Browser: Microsoft Edge / Chromium, local dev through Vite
- Database dialect: MSSQL / Microsoft Fabric SQL database
- Fabric region used successfully: Brazil South

### Logs or screenshots

```shell