[reference-impl-sync] Reference Implementation sync: 6 new commits (2026-05-08)

[github-actions]

Automated Reference Implementation Sync

There are 6 new commits in the official Copilot SDK since the last merge.

• Last merged commit: 066a69c1e849adf1bd98564ab1b52316ec471182
• Reference Implementation HEAD: ce56eb81a1b57f72f603f8cd3e7fb5ce9ee2dbc3

Recent reference implementation commits

ce56eb8 Fix SDK documentation typos (#1235)
299ea21 Default publish workflow to prerelease (#1233)
97f505c Disable CI workflows on forked repositories (#1232)
b0d1c8e feat(rust): support binary tool results (#1222)
671b50a Restore mode handler APIs across SDKs (#1228)
e759700 Use string enums for .NET session events (#1226)

Instructions

You MUST follow these steps in order. Do NOT improvise or skip scripts.

1. ✅✅Read .github/prompts/agentic-merge-reference-impl.prompt.md in full before starting✅✅

❌❌Do NOT clone the reference implementation manually — the start script does this.❌❌
❌❌Do NOT update .lastmerge manually — the finish script does this.❌❌
❌❌Do NOT skip the finish script — it syncs codegen versions and updates .lastmerge.❌❌

Generated by Reference Implementation Sync · ● 199K · ◷

• expires on May 14, 2026, 11:10 PM UTC

[github-actions]

Superseded by a newer reference implementation sync check.