ci: enable display_report for Claude Code actions

[devin-ai-integration]

ci: enable display_report for Claude Code actions

Summary

Adds display_report: true to all anthropics/claude-code-action@v1 steps across three workflow files. This enables the Claude Code Report in the GitHub Step Summary, making it easier to see Claude's output directly from the Actions run page.

Since python-sdk is a public repo, only display_report is enabled (no show_full_output, which could expose sensitive information in publicly visible logs).

Workflows updated:

• claude-code-review.yml — PR review step
• generate-changelog.yml — changelog generation step
• sync-changelog-to-docs.yml — docs sync step

Review & Testing Checklist for Human

• Verify that display_report: true is acceptable for a public repo — the action docs warn this "should only be used in cases where the action is used solely with trusted input." The existing workflows have safeguards (trigger phrases, bot allowlists, workflow-modified skip checks).
• Confirm no show_full_output was accidentally added (it wasn't — this is intentional since the repo is public).

Notes

• Input name display_report confirmed against anthropics/claude-code-action action.yml
• Companion PRs with both display_report and show_full_output are being created for the private repos (hive-kube, honeyhive-helm)
• Devin Session
• Requested by: @sanjeed5

[devin-ai-integration]

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