v2.9.0 (#641)

Co-authored-by: Antoine <33425718+anth2o@users.noreply.github.com>
Co-authored-by: Bastien <bastien.baret@gmail.com>
Co-authored-by: Clément Sirieix <clement.sirieix@mistral.ai>
Co-authored-by: Kim-Adeline Miguel <51720070+kimadeline@users.noreply.github.com>
Co-authored-by: Mathias Gesbert <mathias.gesbert@mistral.ai>
Co-authored-by: Maxime Dolores <maxime.dolores@ext.mistral.ai>
Co-authored-by: Michel Thomazo <51709227+michelTho@users.noreply.github.com>
Co-authored-by: Nelson PROIA <144663685+Nelson-PROIA@users.noreply.github.com>
Co-authored-by: Pierre Rossinès <pierre.rossines@mistral.ai>
Co-authored-by: Quentin <quentin.torroba@mistral.ai>
Co-authored-by: Robin Gullo <robin.gullo@mistral.ai>
Co-authored-by: Mistral Vibe <vibe@mistral.ai>

CHANGELOG.md

@@ -5,6 +5,51 @@ 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).
 
+## [2.9.0] - 2026-04-28
+
+### Added
+
+- Scratchpad directory for temporary working files shared with subagents
+- `/copy` slash command
+- Experimental hooks system with post-agent-turn lifecycle
+- OpenAI Responses API adapter
+- ACP session fork and session close support
+- Thinking level picker in ACP CLI
+- `--trust` session-only flag and fail-fast behavior in `-p` mode
+- Opus 4.7 model support
+- `ConfigLayer` for layered configuration resolution
+- `~/.vibe/prompts` overrides for builtin prompts
+- Enable/disable MCP servers and individual tools from `/mcp` menu
+- Custom compaction instructions via `/compact`
+- `vibe.ready` telemetry event
+- Usage updates sent after every LLM turn for ACP
+- Headless section in system prompt to prevent bad model behavior
+
+### Changed
+
+- Renamed `auto_approve` config to `bypass_tool_permissions`
+- Increased feedback bar frequency with cooldown and TOML cache
+- Feedback bar only shown when active model is Mistral
+- Centralized telemetry metadata construction and wired through entrypoints
+- Preserved stable session identity across compact/fork/rewind
+- Filtered remote sessions by current user and deduped continue-as-new
+- `--continue` now only looks for sessions of the current working directory
+- Batched widget mounts and narrowed CSS selectors for UI performance
+
+### Fixed
+
+- Autocomplete popup height calculation for wrapped lines
+- Autocomplete popup dismissed on tab completion and escape
+- Double Ctrl+C/Ctrl+D required to quit instead of killing session immediately
+- Context window overrun now shows a friendly error message
+- `MallocStackLogging` error messages suppressed in CLI input
+- `index.lock` leftover on interrupted deferred init
+- Safe `find` commands allowed by default
+- Session ID preserved when resuming sessions through ACP
+- Usage updates sent after tool results instead of tool streams in ACP
+- KV cache warming via x-affinity in count tokens
+
+
 ## [2.8.1] - 2026-04-21
 
 ### Fixed
@@ -457,7 +502,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Bumped agent-client-protocol to 0.7.1
 - Refactored UI to require AgentLoop at VibeApp construction
 - Updated README with new MCP server config
-- Improved readability of the AskUserQuerstion tool output
+- Improved readability of the AskUserQuestion tool output
 
 ### Fixed