🎯 Major Feature Release
This release revolutionizes background session handling with /resume support, session-specific model selection, and 20+ stability improvements.
✨ New Features
/resume Now Supports Background Sessions
Sessions started via claude --bg or agent view now appear alongside
interactive ones in the resume picker, marked with bg badge.
Before:
/resume
Only showed interactive sessions
After:
/resume
Shows both interactive + background sessions (bg badge)
Elapsed Duration for Background Agents
Background subagent completion notifications now show elapsed time:
"Agent completed · 3h 2m 5s"
Track long-running agent tasks at a glance. Perfect for overnight runs or complex multi-hour analysis workflows.
Session-Specific Model Selection
/model now changes the model for the current session only.
Press d in the model picker to set a default for new sessions.
Model Selection Behavior:
- /model → Changes model for current session only
- Press 'd' → Sets default for all new sessions
- Resumed sessions → Keep the model they were using
Plugin Last Updated Display
/plugin browse and /plugin discover panes now show
when each plugin was last updated. Make informed decisions about plugin freshness
and maintenance activity.
Terminology Update: Usage Credits
Renamed "extra usage" to "usage credits" across CLI copy.
Command /extra-usage is now /usage-credits
(old name still works for backward compatibility).
🐛 Bug Fixes
Startup Hang Fixed
Fixed startup hanging up to 75s when api.anthropic.com is unreachable — side-channel API calls now time out after 15s
Terminal Output Fixed
Fixed garbled terminal output after missed window-resize event — now self-heals on next frame instead of requiring Ctrl+L
Display Corruption Fixed
Fixed progressive terminal display corruption (stale/garbled glyphs) in very long sessions
VS Code Glitches Reduced
Reduced terminal rendering glitches in VS Code by reducing spinner animation color count
macOS FDA Crash Fixed
Fixed macOS background sessions crashing with "exit 1 before init" in Full Disk Access-protected folders
Image Extension Mismatch
Fixed unrecoverable conversation when reading file whose image extension doesn't match contents (e.g., HTML saved as .png)
Search Tool Errors
Fewer spurious tool errors during search: head/tail views satisfy read-before-edit check, "no matches" no longer reported as failure
/branch Fixed
Fixed /branch failing with "No conversation to branch" after entering worktree or in some background sessions
Escape Key Behavior
Fixed pressing Escape in AskUserQuestion notes field aborting the turn instead of returning to answer selection
Model Selection Persistence
Fixed model selection not applying when changed via IDE model picker; resumed sessions keep their model
Bedrock/Vertex Opus Fix
Fixed Bedrock and Vertex users unable to select "Opus (1M context)" from /model picker
Remote Session Login
Fixed remote-session login failing with "Can't access this organization" for users with forceLoginMethod set
MCP Paginated Tools
Fixed MCP servers with paginated tools/list responses only returning first page, silently dropping tools
Unsupported MIME Types
Fixed MCP images with unsupported MIME types (e.g., SVG) breaking conversation — now saved to disk
File Descriptor Exhaustion
Fixed file descriptor exhaustion when build runs inside skill directory — non-.md files no longer trigger skill reloads
Session Title Generation
Fixed session title being generated from plugin monitor output instead of user's first prompt
Skill in Headless Mode
Fixed Skill tool failing with permission error in headless mode
Plugin Cache Errors
Fixed plugins enabled in your settings showing "not cached" errors after first load on fresh machine
MCP Config Parsing
Fixed claude mcp list silently reporting no servers when .mcp.json can't be parsed
Background Side-Queries
Fixed background side-queries on custom ANTHROPIC_BASE_URL setups and Bedrock Mantle not using Haiku
Windows Scrolling
Fixed scrolling in attached background sessions on Windows — PgUp/PgDn, mouse wheel now work
Terminal Close Crash
Fixed crash when closing terminal while attached to background session
🎯 Key Improvements Summary
📋 Background Sessions First-Class
Background sessions (claude --bg) are now first-class citizens. They appear in /resume picker, show elapsed duration, and integrate seamlessly with interactive sessions.
🎛️ Granular Model Control
Per-session model selection with /model, default setting with 'd' key, and model persistence across session resumes.
⚡ Startup Performance
5x faster timeout (75s → 15s) when api.anthropic.com is unreachable. No more minute-long hangs on network issues.
🖥️ Terminal Stability
Self-healing terminal display after resize, reduced glitches in VS Code, fixed garbled output in long sessions.
💻 Usage Examples
Start Background Session
claude --bg -p "Analyze this codebase"
Session runs in background, appears in /resume with "bg" badge
Resume Background Session
/resume
Select from list including background sessions marked with "bg"
Change Model for Current Session
/model
Select model for this session only
Set Default Model for New Sessions
Press 'd' in model picker
Sets default for all future sessions