[ycherkes]

Ordinary C# query syntax can use Raffinert invocations with the registered EF Core adapter, without AsRaffinertQuery() or the QuerySyntax package. Add real SQLite coverage for filtering, ordering and projection, with a negative control that fails before SQL execution when the adapter is unregistered. Extend the isolated package smoke consumer to prove the same scenario without a QuerySyntax dependency.

Rewrite the README introduction around composable conditions and projections, clarify package selection and expansion boundaries, and show reusable calculations and a configurable customer order export using MergeBindings(). Keep the EF guide consistent. No production implementation changes.

Validation:

• New query-syntax tests: 2 passed.
• Complete EF integration project: 198 passed.
• Full solution Release tests: 289 passed.
• Solution formatting verification passed.
• All three packages packed successfully; isolated PackageSmoke passed using a fresh cache restored from the local feed, with no QuerySyntax dependency.
• README relative links, generic order terminology and git diff checks passed.