Add enableSessionTelemetry option to all SDKs

[Davsterl]

Adds an optional enableSessionTelemetry field to SessionConfig and ResumeSessionConfig across Node.js, Python, Go, and .NET SDKs.

When omitted (default), session telemetry remains enabled — no extra parameter is needed. When set to false, internal session telemetry is disabled.

Includes unit tests for serialization, cloning, and wire forwarding in all four languages.

[Copilot]

Pull request overview

Adds a new per-session configuration flag (enableSessionTelemetry) across the Node.js, Python, Go, and .NET SDKs to allow callers to disable internal session telemetry (while keeping the default behavior unchanged when omitted). This fits into the SDKs’ cross-language SessionConfig / ResumeSessionConfig surface area and ensures the option is serialized and forwarded over the JSON-RPC wire consistently.

Changes:

• Introduces enableSessionTelemetry / enable_session_telemetry on SessionConfig and ResumeSessionConfig across Node.js, Python, Go, and .NET.
• Forwards the value into session.create / session.resume payloads in each SDK.
• Adds unit tests in each language to validate cloning/serialization and wire forwarding behavior.

Show a summary per file

File	Description
python/test_client.py	Adds forwarding tests for enableSessionTelemetry on session.create and session.resume.
python/copilot/session.py	Extends SessionConfig / ResumeSessionConfig TypedDicts with enable_session_telemetry.
python/copilot/client.py	Adds optional enable_session_telemetry parameters and forwards to enableSessionTelemetry on the wire.
nodejs/test/client.test.ts	Adds request-forwarding tests for enableSessionTelemetry on create/resume.
nodejs/src/types.ts	Extends SessionConfig and ResumeSessionConfig types to include enableSessionTelemetry (with docs).
nodejs/src/client.ts	Forwards enableSessionTelemetry into session.create / session.resume request payloads.
go/types.go	Adds EnableSessionTelemetry to configs and wire request structs with JSON tag.
go/client.go	Forwards EnableSessionTelemetry from config into create/resume requests.
go/client_test.go	Adds JSON serialization tests for presence/omission of enableSessionTelemetry.
dotnet/test/Unit/SerializationTests.cs	Adds serialization tests ensuring enableSessionTelemetry is written as expected.
dotnet/test/Unit/CloneTests.cs	Adds clone coverage for EnableSessionTelemetry (set + default/null).
dotnet/src/Types.cs	Adds EnableSessionTelemetry to SessionConfig and ResumeSessionConfig and ensures it is cloned.
dotnet/src/Client.cs	Adds EnableSessionTelemetry to internal create/resume request records and wires it from config.

Copilot's findings

• Files reviewed: 13/13 changed files
• Comments generated: 1

[nickfyson]

👋 Hello!

Is it likely to be possible to get this merged today, and then into a published version of the SDK? 😄

(Context – we're waiting on this functionality for our work on TS Autofind, and it's one of the blockers to starting our dark ship of the re-platforming onto CCA.)

[stephentoub]

@Davsterl, could you make the docs clarifying change for the other languages as well? Then we can get this merged. Thanks.

[stephentoub]

I'm not sure why the node tests are failing; it looks like infrastructure and not being able to get an auth token. I'm going to try submitting your commits in a new PR...

[stephentoub]

@Davsterl, I cherry-picked your commits into #1224, which is passing CI. I'm going to close this PR and go with that one, which also addresses the code review that highlighted because of things racing in CI, the Rust SDK was missing the new members.