Release v0.52.0

What's Changed

• Refactor: exclude transient CI configuration files from workspace context by @DavidAPierce in #28216
• feat(caretaker-triage): add triage worker core foundational modules by @chadd28 in #28163
• feat(caretaker-egress): implement octokit github action handler for egress service by @chadd28 in #28303
• chore(release): bump version to 0.52.0-nightly.20260707.g27a3da3e8 by @gemini-cli-robot in #28323
• Changelog for v0.51.0-preview.0 by @gemini-cli-robot in #28320
• Changelog for v0.50.0 by @gemini-cli-robot in #28322
• fix(core-tools): bypass LLM correction for JSON and IPYNB files in write_file and replace by @amelidev in #28223
• fix(core): use unambiguous previous intent label in fallback summary by @amelidev in #28343
• feat(caretaker-triage): implement main worker execution loop and egress action publisher by @chadd28 in #28306
• fix(privacy): show a clear message when the account has no Code Assist tier by @ompatel-aiml in #28304
• fix(core): enrich shared project quota limit errors with setup hint by @amelidev in #28391
• fix(a2a-server): ensure task cancellation aborts execution loop by @luisfelipe-alt in #28316
• fix(core): simplify plan mode write policy to support relative paths by @DavidAPierce in #28398
• feat(core): Bump node google-auth-library version to 10.9.0 by @jerrylin3321 in #28385
• chore/release: bump version to 0.52.0-nightly.20260715.gfa975395b by @gemini-cli-robot in #28402

Full Changelog: v0.51.0...v0.52.0