184

[RAprogramm]

Follow-up to #184 (found by re-validating against a real consumer): the repository impl block and the constraints mapper were still wrapped in consumer-side #[cfg(feature = "postgres")], so a consumer without a declared postgres feature kept getting unexpected_cfgs warnings and silently lost the impl.

• postgres::generate now returns nothing when the facade's postgres feature is off and emits the impl plainly when it is on
• Constraints mapper cfg removed (already inside the gated generator)
• Module docs updated

Suites green on default, postgres, and --all-features.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ates/entity-derive-impl/src/entity/sql/postgres.rs	66.66%	1 Missing ⚠️

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