Replace identity-hash Koin scopeId with a monotonic counter in context classes

[Copilot]

DefaultSimulationContext and DefaultEditingContext derived their Koin scopeId from identity hash codes (platformIdentityCode / hashCode()). Identity hash codes live in a 31-bit space and are not unique, so under high context-creation volume (e.g. JMH benchmarks creating tens of thousands of contexts) two live contexts can collide, throwing ScopeAlreadyCreatedException.

Scope id generation

• Added ContextScopeIds.kt with nextContextScopeId(), a process-wide, atomicfu-backed monotonic counter that is unique by construction regardless of context creation rate.
• DefaultSimulationContext and DefaultEditingContext now use nextContextScopeId() instead of an identity hash code:

override val scope =
    KoinPlatformTools.defaultContext().get()
        .createScope(
            scopeId = nextContextScopeId(),
            qualifier = named<DefaultSimulationContext>(),
            source = this
        )

Documentation

• Clarified platformIdentityCode's KDoc to explicitly state it must not be used as a unique identifier (debug logging only), since its own collision caveat was previously being ignored at a load-bearing call site.

Tests

• Added ContextScopeIdUniquenessTest (commonTest) asserting scope ids stay unique across thousands of contexts and that nextContextScopeId() never repeats.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud