Add config dir to session options

[devm33]

Enables setting an isolated configuration per session. Added to all SDKs.

[Copilot]

Pull request overview

This PR adds support for a custom configuration directory (config_dir/configDir) option to session creation across all four SDKs (Python, Node.js, Go, and .NET). This enables users to isolate session configuration and state in a custom directory location instead of using the default.

Changes:

• Added config_dir/configDir field to session configuration types in all SDKs
• Updated session creation logic to pass the config directory to the underlying session.create RPC call
• Added E2E tests for all four SDKs to verify sessions work correctly with custom config directories
• Added snapshot file for the new test case

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/snapshots/session/should_create_session_with_custom_config_dir.yaml	Snapshot file for the new test case verifying session creation with custom config directory
python/e2e/test_session.py	Added E2E test to verify session creation with custom config directory in Python SDK
python/copilot/types.py	Added config_dir field to SessionConfig type with documentation
python/copilot/client.py	Added logic to pass config_dir to session.create RPC call
nodejs/test/e2e/session.test.ts	Added E2E test to verify session creation with custom config directory in Node.js SDK
nodejs/src/types.ts	Added configDir field to SessionConfig interface with JSDoc documentation
nodejs/src/client.ts	Added logic to pass configDir to session.create RPC call
go/types.go	Added ConfigDir field to SessionConfig struct with documentation
go/e2e/session_test.go	Added E2E test to verify session creation with custom config directory in Go SDK
go/client.go	Added logic to pass configDir to session.create RPC call
dotnet/test/SessionTests.cs	Added E2E test to verify session creation with custom config directory in .NET SDK
dotnet/src/Types.cs	Added ConfigDir property to SessionConfig class with XML documentation
dotnet/src/Client.cs	Added ConfigDir parameter to CreateSessionRequest record and updated session creation logic

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[criemen]

stamping for merge conflict resolution

[friggeri]

@devm33 You've got some CI failures here

[devm33]

@devm33 You've got some CI failures here

Yes this is blocked by a change in the runtime to fix connecting the config dir setting

[SteveSandersonMS]

@devm33 You might need to rebase on main to inherit test fixes. (Edit: oh maybe you already did merge it in)

[devm33]

@devm33 You might need to rebase on main to inherit test fixes. (Edit: oh maybe you already did merge it in)

done!