Upstream sync: port changes from github/copilot-sdk (062b61c → 485ea5e)

[Copilot]

Ports 19 upstream commits from the official github/copilot-sdk (.NET reference implementation) into the Java SDK.

New Features

• TelemetryConfig — new class to configure OpenTelemetry for the CLI server (otlpEndpoint, filePath, exporterType, sourceName, captureContent); set via CopilotClientOptions.setTelemetry(config), which injects the corresponding env vars on CLI startup

• PermissionRequestResultKind.NO_RESULT — signals "leave this permission request unanswered" in multi-client v3 protocol scenarios; the SDK skips the RPC response call when returned from a v3 broadcast handler, and throws IllegalStateException if returned through the v2 path

• ToolDefinition.createSkipPermission() — new factory + skipPermission record field; instructs the CLI to bypass the permission check for safe/read-only tools

• CopilotSession.setModel(model, reasoningEffort) — overload that accepts an optional reasoning effort level ("low", "medium", "high", "xhigh")

• New events: SessionBackgroundTasksChangedEvent (session.background_tasks_changed) and SessionToolsUpdatedEvent (session.tools_updated)

Protocol Data Updates

Added fields to existing event data records (all nullable, backward-compatible):

• ExternalToolRequestedData: traceparent, tracestate (W3C Trace Context)
• SessionStartData, SessionResumeData: reasoningEffort
• SessionResumeData: selectedModel
• SessionModelChangeData: reasoningEffort, previousReasoningEffort
• AssistantUsageData: reasoningEffort

Deprecations

• CopilotClientOptions.autoRestart — marked @Deprecated; has no effect (feature removed upstream)

Not Ported

• Serial event dispatch via channel (b100339) — Java SDK's EventErrorPolicy already provides handler-exception control; full migration would require significant test refactoring
• RequestId serialization fix (a29dc18) — .NET/StreamJsonRpc-specific AOT issue; not applicable to Java/Jackson

Pull request checklist

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• mvn spotless:apply has been run to format the code
• mvn clean verify passes locally

Does this introduce a breaking change?

• Yes
• No

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Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• checkstyle.org
  • Triggering command: `/opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/tools/linux64/java/bin/java /opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/tools/linux64/java/bin/java -jar /opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/xml/tools/xml-extractor.jar --fileList=/tmp/codeql-scratch-a0b8ba07f7cabbfc/dbs/java/working/files-to-index13735164267612819003.list --sourceArchiveDir=/tmp/codeql-scratch-a0b8ba07f7cabbfc/dbs/java/src --outputDir=/tmp/codeql-scratch-a0b8ba07f7cabbfc/dbs/java/trap/java --log-level rgo/bin/which --stdio --auth-token-envshow COPILOT_SDK_AUTH47a10811f863364e55c15c093b1c3c89bee89091:src/main/java/com/github/copilot/sdk/json/TelemetryConfig.java which curl�� b/copilot/sdk/events/SessionModelChangeEvent.java onRequestResultKind.NO_RESULT, skipPermission tools, reasoningEffort, new events

Co-authored-by21.0.9+10-LTS k/_temp/ghcca-node/node/bin/git t-work-113297650git bash /.bin/sh which` (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.