v2.9.1 (#644)

Co-authored-by: Brice Carpentier <brice.carpentier@mistral.ai>
Co-authored-by: Clément Drouin <clement.drouin@mistral.ai>
Co-authored-by: Clément Sirieix <clement.sirieix@mistral.ai>
Co-authored-by: Kim-Adeline Miguel <51720070+kimadeline@users.noreply.github.com>
Co-authored-by: Lucas Marandat <31749711+lucasmrdt@users.noreply.github.com>
Co-authored-by: Michel Thomazo <51709227+michelTho@users.noreply.github.com>
Co-authored-by: Pierre Rossinès <pierre.rossines@mistral.ai>
Co-authored-by: Quentin <quentin.torroba@mistral.ai>
Co-authored-by: Mistral Vibe <vibe@mistral.ai>

CHANGELOG.md

@@ -5,6 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.9.1] - 2026-04-29
+
+### Added
+
+- Connector OAuth authentication flow in `/mcp` menu
+- `ConfigPatch` operation types for Vibe Code
+- `extra_headers` field to `ProviderConfig`
+- Structured metadata on ACP tool results
+- `vibe.user_cancelled_action` ACP telemetry coverage
+- `vibe.new_session` telemetry event emitted whenever the session is reset
+
+### Changed
+
+- Migrated default model to `mistral-medium-3.5`
+
+
 ## [2.9.0] - 2026-04-28
 
 ### Added