Fix GAgent member and draft-run flows

[AbigailDeng]

Problem

• GAgent-type members created from Studio could disappear after refresh because the UI did not preserve the pending member/actor binding across read-model lag.
• Newly created teams could show a success state but remain absent from My Teams until projection caught up.
• The GAgent draft-run SSE endpoint could open a request without sending any event frames, leaving the Run button stuck in loading.

Solution

• Preserve pending GAgent member binding candidates and bridge them into the Studio member flow until the backend read model catches up.
• Add a pending team roster bridge for newly created teams so My Teams remains honest during read-model lag.
• Add frontend draft-run timeout handling and explicit dev proxy routing for /api/scopes/{scopeId}/gagent/draft-run.
• Change the CQRS command interaction flow to emit the accepted/run-started callback after command preparation, before awaiting actor dispatch, so SSE clients receive the first frame promptly while dispatch and live projection continue.

Impacted paths

• apps/aevatar-console-web/src/pages/studio/*
• apps/aevatar-console-web/src/pages/teams/*
• apps/aevatar-console-web/src/pages/gagents/*
• apps/aevatar-console-web/src/shared/api/runtimeGAgentApi.ts
• apps/aevatar-console-web/config/proxy.ts
• src/Aevatar.CQRS.Core/Interactions/DefaultCommandInteractionService.cs

Validation

• pnpm jest --selectProjects jsdom --runTestsByPath src/pages/studio/components/StudioBuildPanels.test.tsx
• pnpm jest --selectProjects jsdom --runTestsByPath src/pages/studio/index.test.tsx
• pnpm jest --selectProjects jsdom --runTestsByPath src/pages/teams/home.test.tsx src/pages/teams/new.test.tsx
• pnpm jest --selectProjects jsdom --runTestsByPath src/shared/api/runtimeGAgentApi.test.ts src/pages/gagents/index.test.tsx src/pages/studio/components/StudioBuildPanels.test.tsx
• pnpm jest --selectProjects node --runTestsByPath src/shared/config/proxyConfig.test.ts
• pnpm tsc
• dotnet test test/Aevatar.CQRS.Core.Tests/Aevatar.CQRS.Core.Tests.csproj --nologo --filter DefaultCommandInteractionServiceTests
• dotnet test test/Aevatar.GAgentService.Integration.Tests/Aevatar.GAgentService.Integration.Tests.csproj --nologo --filter ScopeGAgentEndpointsTests
• git diff --check

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.47%. Comparing base (9888995) to head (9b8e81a).

@@            Coverage Diff             @@
##              dev     #702      +/-   ##
==========================================
- Coverage   82.47%   82.47%   -0.01%     
==========================================
  Files         941      941              
  Lines       60101    60101              
  Branches     7872     7872              
==========================================
- Hits        49571    49569       -2     
- Misses       7132     7133       +1     
- Partials     3398     3399       +1     

Flag	Coverage Δ
ci	82.47% <ø> (-0.01%)	⬇️

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see 1 file with indirect coverage changes

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