Support local scopes on injected dependencies

[GedMarc]

Consumers can now apply a scope to an injectable constructor parameter or field without changing the dependency's binding for other consumers. This ports the core behavior proposed in google/guice#1949 to GuicedEE's shaded Guice source.

The scoped provider is shared by the same consumer, scope annotation, and dependency key. Other consumers remain isolated, and a locally scoped dependency wraps any scope already configured on its binding. Scope recognition and binding continue through the existing ScopeAnnotationProvider and BindScopeProvider SPIs.

The README documents local scope semantics and walks through registering @RequestScoped, including a minimal synchronous scope implementation, service registration, and request entry/exit. No web runtime dependency is added to guice-core.

Validation: mvn -q test in Google/guice-core on this branch (8 tests, 0 failures).

[Copilot]

Copilot review overview

🟡 Changes recommended

Core cache-separation and scope-wrapping guarantees are not conclusively tested.

Review effort: Balanced
Findings: 2

Open (2)

• Test cache separation by dependency key and scope annotation · New
• Test that local scope wraps the existing scope · New

What changed in this PR

Adds validation for consumer-local dependency scopes and test-time SPI registration.

Changes:

• Tests constructor, field, custom, lifecycle, and error semantics.
• Registers test scope SPIs through ServiceLoader.

File	Description
LocalScopeTest.java	Exercises local-scope behavior.
...ScopeAnnotationProvider	Registers the test marker provider.
...BindScopeProvider	Registers the test scope binder.

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