1. Summary

Introduce a resume workflow that lets qwen seamlessly continue previous sessions scoped to the current project (i.e., the current working directory). This enables multi-step development workflows without reconstructing context manually.

Breaking Changes:

• Old JSON session files are not supported
• /chat slash commands are removed, and history chat list are ignored

2. --continue: Resume the Most Recent Session

qwen --continue

• Resumes the most recent session in the current project
• Restores message history, (model config?), and tool state
• Starts in interactive mode

Non-interactive usage

qwen --continue --p "Continue my task"

• Same as above, but non-interactive
• Ideal for scripts and CI

3. --resume: Pick a Session

qwen --resume

• Shows an interactive list of sessions from the current project only
• Includes summary, timestamps, message count, and optional git info
• Arrow keys to navigate; Enter to select

4. Technical Notes

🔄 Breaking Change: JSON → JSONL Storage

The old JSON session format is replaced by a project-scoped JSONL system.

• No backward compatibility
• Sessions are stored under a directory tied to the current working directory
• Sessions from one project are not visible in another

JSONL Structure

• Line 1: Metadata

  • id, title, timestamps
  • model configuration
  • project root path / git metadata

• Line 2+: Message entries

  • user, assistant, tool events

Benefits: fast listing, incremental saves, improved safety.

📄 Listing, Loading & Auto-Save

Conversation Listing

• Only the first line of each JSONL file is read
• Listing is restricted to the project’s session directory

Conversation Loading

• Full JSONL is deserialized
• Restores complete history + tool state + config

Auto-Save

• New messages appended as new JSONL lines
• Metadata never rewritten
• Safe, incremental persistence

5. ACP Integration

The resume system is fully exposed through customized ACP endpoints:

session/list

• Returns metadata for sessions in the current project only
• Mirrors CLI scoping behavior

session/load

• Loads full session history for a given project-scoped session
• Restores configuration + tool state

This ensures consistent behavior across CLI, IDE plugins, and external clients.

6. Breaking Change: Removal of /chat Commands

All /chat slash commands (e.g., /chat new, /chat list, /chat switch) are removed.

Rationale

• Fully superseded by the new session system
• Simplifies UX by having one unified flow
• Reduces duplicated functionality and edge cases

7. Example Usage

# In a project folder
qwen --continue
qwen --continue --print "Run tests again"
qwen --resume            # lists sessions for this project only