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## Related issue number

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* add subscription response

* fix send subscription response

* add register agent type response

* adding a test

* working on shaping up a test

* appsettins update for backend

* another appsettings

* fixup aspire hosting

* enable AGENT_HOST var from aspire

* add SendMessageAsync

* remove broken test

* test compiles and runs but is not (yet) correct

* subscriptions grain wireup.

* temp assert true.

* remove DI for SubscriptionGrain

* add xlang python code

* add subscription response

* rebond

* Update to .NET 9.0

* Fix Backend project SDK

* Package updates

* get RegisterAgentTypeRequest working

* fix exceptions

* add error handling for requests

* whoops

* send cloud event message type

* processing cloudevents

* trying tosend proto data - doesn't work

* trying to pack proto_data

* fix (#4238)

* pack the Message from agents_events

* format - not sure why these?

* format

* cleanup, error handling, xlang sample publishes messages that can be heard by .NET and vice versa

* format

* sdk version

* sdk vers

* net8

* back to net8

* remove netstandard2

* fix used

* remove unused

* more cleanup

* remove unneeded package

* I'm terrible at writing tests

* deserialize the cloud events and sent them as events

* comment

* cleanup

* await

* Delete dotnet/samples/Hello/Backend/Backend.csproj

unneeded change

* whoops

* merge main python back into here

* revert back to local

* revert some of the helloAgents changes.

* [.NET] Add happy path test for in-memory agent && Simplify HelloAgent example && some clean-up in extension APIs (#4227)

* add happy path test

* remove unnecessary namespace

* fix build error

* Update AgentBaseTests.cs

* revert changes

---------

* fix busted merge from main

* addressing review comments

* make internal

* case sensitive rename step 1

* case sensitive rename step 2

* remove!

---------

Co-authored-by: Peter Chang <petchang@microsoft.com>
Co-authored-by: Reuben Bond <reuben.bond@gmail.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>
Co-authored-by: Xiaoyun Zhang <bigmiao.zhang@gmail.com>

* fix test

* install aspire workload

* format

* fix build error

* fix format

* format

* add AutoGen.AotCompatibility test

* add aot test

* fix build error

* update ps1 path