docs(changelog): audit unreleased entries

packages/ai/CHANGELOG.md

@@ -5,10 +5,12 @@
 ### Added
 
 - Added `gpt-5.4` model support for `openai`, `openai-codex`, `azure-openai-responses`, and `opencode` providers, with GPT-5.4 treated as xhigh-capable and capped to a 272000 context window in built-in metadata.
+- Added `gpt-5.3-codex` fallback model availability for `github-copilot` until upstream model catalogs include it ([#1853](https://github.com/badlogic/pi-mono/issues/1853)).
 
 ### Fixed
 
 - Preserved OpenAI Responses assistant `phase` metadata (`commentary`, `final_answer`) across turns by encoding `id` and `phase` in `textSignature` for session persistence and replay, with backward compatibility for legacy plain signatures ([#1819](https://github.com/badlogic/pi-mono/issues/1819)).
+- Fixed OpenAI Responses replay to omit empty thinking blocks, avoiding invalid no-op reasoning items in follow-up turns.
 - Switched the Mistral provider from the OpenAI-compatible completions path to Mistral's native SDK and conversations API, preserving native thinking blocks and Mistral-specific message semantics across turns ([#1716](https://github.com/badlogic/pi-mono/issues/1716)).
 - Fixed Antigravity endpoint fallback: 403/404 responses now cascade to the next endpoint instead of throwing immediately, added `autopush-cloudcode-pa.sandbox` endpoint to the fallback list, and removed extra fingerprint headers (`X-Goog-Api-Client`, `Client-Metadata`) from Antigravity requests ([#1830](https://github.com/badlogic/pi-mono/issues/1830)).
 - Fixed `@mariozechner/pi-ai/oauth` package exports to point directly at built `dist` files, avoiding broken TypeScript resolution through unpublished wrapper targets ([#1856](https://github.com/badlogic/pi-mono/issues/1856)).

packages/coding-agent/CHANGELOG.md

@@ -2,6 +2,18 @@
 
 ## [Unreleased]
 
+### New Features
+
+- GPT-5.4 support across `openai`, `openai-codex`, `azure-openai-responses`, and `opencode`, with `gpt-5.4` now the default for `openai` and `openai-codex` ([README.md](README.md), [docs/providers.md](docs/providers.md)).
+- `treeFilterMode` setting to choose the default `/tree` filter mode (`default`, `no-tools`, `user-only`, `labeled-only`, `all`) ([docs/settings.md](docs/settings.md), [#1852](https://github.com/badlogic/pi-mono/pull/1852) by [@lajarre](https://github.com/lajarre)).
+- Mistral native conversations integration with SDK-backed provider behavior, preserving Mistral-specific thinking and replay semantics ([README.md](README.md), [docs/providers.md](docs/providers.md), [#1716](https://github.com/badlogic/pi-mono/issues/1716)).
+
+### Added
+
+- Added `gpt-5.4` model availability for `openai`, `openai-codex`, `azure-openai-responses`, and `opencode` providers.
+- Added `gpt-5.3-codex` fallback model availability for `github-copilot` until upstream model catalogs include it ([#1853](https://github.com/badlogic/pi-mono/issues/1853)).
+- Added `treeFilterMode` setting to choose the default `/tree` filter mode (`default`, `no-tools`, `user-only`, `labeled-only`, `all`) ([#1852](https://github.com/badlogic/pi-mono/pull/1852) by [@lajarre](https://github.com/lajarre)).
+
 ### Changed
 
 - Updated the default models for the `openai` and `openai-codex` providers to `gpt-5.4`.
@@ -9,6 +21,7 @@
 ### Fixed
 
 - Fixed GPT-5.3 Codex follow-up turns dropping OpenAI Responses assistant `phase` metadata by preserving replayable signatures in session history and forwarding `phase` back to the Responses API ([#1819](https://github.com/badlogic/pi-mono/issues/1819)).
+- Fixed OpenAI Responses replay to omit empty thinking blocks, avoiding invalid no-op reasoning items in follow-up turns.
 - Updated Mistral integration to use the native SDK-backed provider and conversations API, including coding-agent model/provider wiring and Mistral setup documentation ([#1716](https://github.com/badlogic/pi-mono/issues/1716)).
 - Fixed Antigravity reliability: endpoint cascade on 403/404, added autopush sandbox fallback, removed extra fingerprint headers ([#1830](https://github.com/badlogic/pi-mono/issues/1830)).
 - Fixed `@mariozechner/pi-ai/oauth` extension imports in published installs by resolving the subpath directly from built `dist` files instead of package-root wrapper shims ([#1856](https://github.com/badlogic/pi-mono/issues/1856)).