Changelog for v0.54.0-preview.0 (#28567)

Co-authored-by: gemini-cli-robot <224641728+gemini-cli-robot@users.noreply.github.com>

docs/changelogs/preview.md

@@ -1,6 +1,6 @@
-# Preview release: v0.53.0-preview.0
+# Preview release: v0.54.0-preview.0
 
-Released: July 22, 2026
+Released: July 28, 2026
 
 Our preview release includes the latest, new, and experimental features. This
 release may not be as stable as our [latest weekly release](latest.md).
@@ -13,42 +13,59 @@ npm install -g @google/gemini-cli@preview
 
 ## Highlights
 
-- **Caretaker LLM Triage Orchestrator**: Implemented the LLM triage orchestrator
-  and container build configuration to support caretaker triage workflows.
-- **Enhanced Workspace Trust & Sandbox Hardening**: Aligned macOS permissive
-  Seatbelt profiles with the deny-default model and enforced workspace trust and
-  task isolation in the Agent-to-Agent (A2A) server to prevent remote code
-  execution (RCE).
-- **Core Robustness & API Protections**: Mitigated infinite ReAct and prompt
-  injection loops, and prevented 400 Bad Request errors by grouping cancelled
-  tool responses and coalescing consecutive roles.
-- **Robust Credentials & Fallbacks**: Restored the
-  `GOOGLE_APPLICATION_CREDENTIALS` environment variable fallback and
-  sequentially verified cached credentials.
-- **Evaluation Coverage Reporting**: Added a new command to generate
-  comprehensive eval coverage reports.
+- **Antigravity Agent & PR Generator:** Integrated the Antigravity agent runner,
+  Firestore dual-locking for concurrency, prompt templates, and ingestion
+  testing utilities.
+- **Caretaker Triage & Issue Management:** Enhanced the issue triage workflow by
+  automatically posting a comment before closing issues, and sanitizing and
+  wrapping issue titles in `untrusted_context`.
+- **Core API & Session Stability:** Enforced HTTPS for
+  GoogleCredentialsAuthProvider to prevent cleartext leakage, rotated session
+  IDs on model fallback to prevent stateful API errors, and refined chat history
+  by filtering out thought parts when context management is disabled.
 
 ## What's Changed
 
-- fix(core,a2a): group cancelled tool responses and coalesce consecutive roles
-  to prevent 400 Bad Request by @luisfelipe-alt in
-  [#28407](https://github.com/google-gemini/gemini-cli/pull/28407)
-- feat(caretaker-triage): implement LLM triage orchestrator and container build
-  by @chadd28 in
-  [#28345](https://github.com/google-gemini/gemini-cli/pull/28345)
-- refactor(cli): align macOS permissive Seatbelt profiles with deny-default
-  model by @ompatel-aiml in
-  [#28424](https://github.com/google-gemini/gemini-cli/pull/28424)
-- fix(core): mitigate infinite ReAct loops and prompt injection loops by
-  @amelidev in [#28429](https://github.com/google-gemini/gemini-cli/pull/28429)
-- fix(a2a-server): enforce workspace trust and task isolation to prevent RCE by
+- Changelog for v0.53.0-preview.0 by @gemini-cli-robot in
+  [#28507](https://github.com/google-gemini/gemini-cli/pull/28507)
+- Changelog for v0.52.0 by @gemini-cli-robot in
+  [#28508](https://github.com/google-gemini/gemini-cli/pull/28508)
+- chore(release): bump version to 0.54.0-nightly.20260722.gf743ab579 by
+  @gemini-cli-robot in
+  [#28510](https://github.com/google-gemini/gemini-cli/pull/28510)
+- fix(caretaker): sanitize and wrap issue title in untrusted_context by @chadd28
+  in [#28352](https://github.com/google-gemini/gemini-cli/pull/28352)
+- chore(caretaker): update vitest to v3.2.4 and add package-lock.json files by
+  @chadd28 in [#28409](https://github.com/google-gemini/gemini-cli/pull/28409)
+- fix(core): rotate session ID on model fallback to prevent stateful API errors
+  by @amelidev in
+  [#28469](https://github.com/google-gemini/gemini-cli/pull/28469)
+- feat(caretaker-triage): post comment before auto-closing issues by @chadd28 in
+  [#28411](https://github.com/google-gemini/gemini-cli/pull/28411)
+- fix(core): enforce HTTPS for GoogleCredentialsAuthProvider to prevent
+  cleartext leakage by @amelidev in
+  [#28517](https://github.com/google-gemini/gemini-cli/pull/28517)
+- fix(core): filter out thought parts from getHistoryTurns when context
+  management is disabled by @DavidAPierce in
+  [#28509](https://github.com/google-gemini/gemini-cli/pull/28509)
+- fix(a2a-server): normalize CRLF line endings to LF in getProposedContent by
   @luisfelipe-alt in
-  [#28470](https://github.com/google-gemini/gemini-cli/pull/28470)
-- fix(core): sequentially verify cached credentials and restore
-  GOOGLE_APPLICATION_CREDENTIALS fallback by @luisfelipe-alt in
-  [#28472](https://github.com/google-gemini/gemini-cli/pull/28472)
-- feat(evals): add eval coverage report command by @ved015 in
-  [#28169](https://github.com/google-gemini/gemini-cli/pull/28169)
+  [#28531](https://github.com/google-gemini/gemini-cli/pull/28531)
+- fix(core): enforce explicit tag length and validation in file keychain by
+  @luisfelipe-alt in
+  [#28523](https://github.com/google-gemini/gemini-cli/pull/28523)
+- chore/release: bump version to 0.54.0-nightly.20260728.gbef611950 by
+  @gemini-cli-robot in
+  [#28552](https://github.com/google-gemini/gemini-cli/pull/28552)
+- feat(pr-generator-db): implement Firestore concurrency dual-locking and test
+  ingestion utilities by @joneba-google in
+  [#28432](https://github.com/google-gemini/gemini-cli/pull/28432)
+- feat(pr-generator-agent): implement Antigravity agent runner and prompt
+  templates … by @joneba-google in
+  [#28434](https://github.com/google-gemini/gemini-cli/pull/28434)
+- fix(core): skip merged function-response turns when finding the active loop by
+  @adamfweidman in
+  [#28565](https://github.com/google-gemini/gemini-cli/pull/28565)
 
 **Full Changelog**:
-https://github.com/google-gemini/gemini-cli/compare/v0.52.0-preview.0...v0.53.0-preview.0
+https://github.com/google-gemini/gemini-cli/compare/v0.53.0-preview.0...v0.54.0-preview.0