Providers fetch in parallel now (cost ~= max, not sum), so the old
90s stopgap for the 3-sequential-providers-plus-pagination worst case
can come back down toward the 30s default, with headroom for
pagination and per-request HTTP timeouts.
Move all provider-related classes, enums, interface and trait into
App\Service\Provider; move SvgRenderer into App\Service\Renderer.
ContributionAggregator stays at the Service root as the orchestrator.
Test namespaces and use statements updated to match.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Introduce ProviderHealthChecker which probes each configured provider
via AutowireIterator. Wire it into GraphController so /health returns
detailed per-provider status and responds 503 when any provider is
in a degraded state.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Move fetchAllContributions and merge logic from GraphController into a new
ContributionAggregator service. Replace deprecated TaggedIterator with
AutowireIterator throughout.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
haylan
