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Adds an abstraction over the CreateChallengeRequest.complexity field
(already present in the proto since the original altcha module landed),
letting applications scale PoW difficulty per request based on actor
signals — repeat-offender counters, threat-intel headers, reputation
scores — without leaking those concerns into the gRPC provider.
- new IAltchaDifficultyAdvisor in Svrnty.CQRS.Altcha.Abstractions:
Task<uint?> GetComplexityAsync(...). null means "use the upstream
service's configured default."
- NullAltchaDifficultyAdvisor in Svrnty.CQRS.Altcha is the no-op
fallback registered by AddSvrntyAltcha() via TryAddSingleton, so
applications can replace it without ordering constraints.
- AltchaGrpcChallengeProvider now resolves the advisor and sets
CreateChallengeRequest.Complexity when the advisor returns a value.
The Altcha server clamps to its configured min/max, so callers
don't need to enforce bounds here.
No breaking changes to existing consumers — the no-op default keeps
behaviour identical when no advisor is registered.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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| .. | ||
| Protos | ||
| AltchaCallCredentials.cs | ||
| AltchaGrpcChallengeProvider.cs | ||
| AltchaGrpcOptions.cs | ||
| AltchaGrpcVerifier.cs | ||
| ServiceCollectionExtensions.cs | ||
| Svrnty.CQRS.Altcha.Grpc.csproj | ||