Polish Inspector live pulse

[eanzhao]

Summary

• route the Inspector hierarchy demo ping through the actor publisher so repeated demo runs still emit runtime HandleEvent telemetry
• add actor list/canvas hover highlighting and live pulse state driven by OTel agent tags
• add regression coverage for repeated hierarchy runs emitting message activity

Validation

• pnpm build
• dotnet test test/Aevatar.Demos.Inspector.Tests/Aevatar.Demos.Inspector.Tests.csproj --nologo
• bash tools/ci/inspector_tier_boundary_guard.sh
• bash tools/ci/test_stability_guards.sh

Notes

• Existing warnings remain: OpenTelemetry.Api NU1902 advisory and unrelated analyzer warnings.

[chatgpt-codex-connector]

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Reviewed commit: 739378a6f0

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[chatgpt-codex-connector]

Broadcast telemetry to all SSE subscribers

When more than one Inspector UI tab or SSE client is connected, each ReadAllAsync call consumes from the same _frames.Reader, so the channel behaves like a work queue: the first reader that drains a frame removes it and the other clients never see that activity. This makes live pulses and recent-event lists inconsistent across multiple connected inspectors; use per-subscriber readers/channels or fan out each TelemetryFrame to all active subscribers.

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[codecov]

Codecov Report

❌ Patch coverage is 74.57627% with 225 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.05%. Comparing base (86889d3) to head (739378a).

Files with missing lines	Patch %	Lines
...ector/ReadModels/InspectorReadModelQueryService.cs	51.88%	44 Missing and 7 partials ⚠️
...os/Aevatar.Demos.Inspector/InspectorApplication.cs	78.36%	32 Missing and 5 partials ⚠️
...bstractions/Observability/AevatarActivitySource.cs	83.57%	21 Missing and 13 partials ⚠️
...ector/ReadModels/InspectorGAgentRegistryService.cs	58.57%	22 Missing and 7 partials ⚠️
...evatar.Demos.Inspector/Demo/InspectorDemoAgents.cs	0.00%	14 Missing ⚠️
...re/Observability/ObservedProjectionMaterializer.cs	76.47%	10 Missing and 2 partials ⚠️
...mos.Inspector/ReadModels/InspectorReadModelDtos.cs	71.42%	10 Missing ⚠️
...ntime/Runtime/ObservedProjectionWriteDispatcher.cs	73.52%	8 Missing and 1 partial ⚠️
....Implementations.Local/Actors/LocalActorRuntime.cs	70.00%	8 Missing and 1 partial ⚠️
....AGUIAdapter/WorkflowExecutionRunEventProjector.cs	81.08%	2 Missing and 5 partials ⚠️
... and 4 more

@@            Coverage Diff             @@
##              dev     #638      +/-   ##
==========================================
+ Coverage   72.01%   72.05%   +0.03%     
==========================================
  Files        1255     1267      +12     
  Lines       90723    91487     +764     
  Branches    11877    11940      +63     
==========================================
+ Hits        65338    65924     +586     
- Misses      20703    20838     +135     
- Partials     4682     4725      +43     

Flag	Coverage Δ
ci	72.05% <74.57%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ctor/ReadModels/InspectorActorCommandDispatcher.cs	100.00% <100.00%> (ø)
...evatar.Demos.Inspector/Telemetry/TelemetryFrame.cs	100.00% <100.00%> (ø)
...ncyInjection/ProjectionMaterializerRegistration.cs	100.00% <100.00%> (ø)
...DependencyInjection/ServiceCollectionExtensions.cs	100.00% <100.00%> (ø)
...undation.Runtime/Observability/EventHandleScope.cs	88.57% <100.00%> (ø)
...Runtime.Implementations.Local/Actors/LocalActor.cs	96.40% <0.00%> (-0.72%)	⬇️
...mos.Inspector/Demo/InspectorDemoScenarioService.cs	93.93% <93.93%> (ø)
demos/Aevatar.Demos.Inspector/Program.cs	0.00% <0.00%> (ø)
...spector/Telemetry/InspectorTelemetryBroadcaster.cs	91.07% <91.07%> (ø)
....AGUIAdapter/WorkflowExecutionRunEventProjector.cs	88.33% <81.08%> (-11.67%)	⬇️
... and 9 more

... and 6 files with indirect coverage changes

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