Unify @github/copilot version tracking and rename sync workflow

[edburns]

Problem:
Two independent paths updated the @github/copilot dependency:

1. Dependabot bumped scripts/codegen/package.json (for schema codegen)
2. The weekly reference-impl sync updated pom.xml (for CLI test binary)

These could drift apart, causing schema/CLI version mismatches.

Solution (Option C):
Make the reference-impl sync the single entry point for all @github/copilot
version changes. During sync, both pom.xml AND scripts/codegen/package.json
are updated from the reference implementation's nodejs/package.json.

Changes:

1. New script: sync-codegen-version.sh

   • Extracts @github/copilot version from reference impl
   • Runs npm install in scripts/codegen/ to update package.json and lock file

2. Updated merge-reference-impl-finish.sh

   • Calls sync-codegen-version.sh after the existing pom.xml sync
   • Stages scripts/codegen/package.json and package-lock.json in the commit

3. Removed Dependabot npm entry for /scripts/codegen

   • No longer needed since the reference-impl sync handles this dependency

4. Renamed workflow files (removed timing from names):

   • weekly-reference-impl-sync.yml -> reference-impl-sync.yml
   • weekly-reference-impl-sync.md -> reference-impl-sync.md
   • weekly-reference-impl-sync.lock.yml -> reference-impl-sync.lock.yml

5. Changed schedule from weekly (Monday) to daily

6. Removed all "weekly"/"Weekly" timing references from:

   • Workflow files (.yml, .md, .lock.yml)
   • POM property name (removed "weekly" from the long property name)
   • setup-copilot/action.yml
   • sync-cli-version-from-reference-impl.sh
   • coding-agent-merge-reference-impl-instructions.md
   • README.md
   • docs/WORKFLOWS.md

7. Recompiled agentic workflow lock file via gh aw compile

[edburns]

Copilot authored.

[Copilot]

Pull request overview

This PR aims to make the reference-implementation sync the single mechanism for keeping the @github/copilot version aligned across the Java SDK’s test CLI (via pom.xml) and schema/codegen tooling (via scripts/codegen/package.json), while also renaming and de-“weekly”-ifying the reference sync workflow and related docs.

Changes:

• Add a new sync script to update scripts/codegen’s @github/copilot dependency from the reference implementation, and invoke it from the merge finish script.
• Rename the reference-impl sync workflows/files and update schedule/text references across docs and scripts.
• Remove Dependabot’s npm updater for /scripts/codegen.

Show a summary per file

File	Description
src/test/java/com/github/copilot/sdk/generated/rpc/GeneratedRpcRecordsCoverageTest.java	Updates tests for the new AgentInfo shape (adds path).
pom.xml	Renames the readonly @github/copilot tracking property to remove “weekly” from the name.
docs/WORKFLOWS.md	Updates workflow names/links for the renamed reference sync workflows.
README.md	Updates the description/linking for the renamed sync workflow and mentions lockstep versioning.
.github/workflows/reference-impl-sync.yml	Renames the workflow and changes its cron schedule.
.github/workflows/reference-impl-sync.md	Renames the agentic workflow source prompt and updates schedule metadata.
.github/workflows/reference-impl-sync.lock.yml	Recompiled compiled agentic workflow with updated naming/schedule.
.github/scripts/reference-impl-sync/sync-codegen-version.sh	New script to sync scripts/codegen @github/copilot version from reference impl.
.github/scripts/reference-impl-sync/sync-cli-version-from-reference-impl.sh	Updates property name references to match the renamed pom property.
.github/scripts/reference-impl-sync/merge-reference-impl-finish.sh	Calls the new codegen sync script and stages codegen package/lock updates.
.github/prompts/coding-agent-merge-reference-impl-instructions.md	Updates workflow filename references after rename.
.github/dependabot.yml	Removes npm updates for /scripts/codegen.
.github/actions/setup-copilot/action.yml	Updates the pom property name used to read the pinned @github/copilot version.

Copilot's findings

Comments suppressed due to low confidence (1)

.github/workflows/reference-impl-sync.yml:6

• The workflow schedule here is Tuesday/Thursday (cron 0 10 * * 2,4), but the PR description and the agentic workflow metadata indicate the sync was changed to daily. Please align the schedule across the non-agentic workflow, the agentic workflow, and docs/PR description (either make this cron daily, or update the other references to match Tue/Thu).

• Files reviewed: 12/13 changed files
• Comments generated: 3