upstream port: session rename / delete / auto-title (#3093, #3540)

[mabry1985]

Backport upstream's session management overhaul: /rename <name>, /delete, and auto-titled sessions via fastModel.

Upstream PRs

• feat(session): add rename, delete, and auto-title generation for session QwenLM/qwen-code#3093 feat(session): add rename, delete, and auto-title generation for session — foundation: custom_title records, parentUuid chaining, rename/delete UX, resume by custom title.
• feat(session): auto-title sessions via fast model, add /rename --auto QwenLM/qwen-code#3540 feat(session): auto-title sessions via fast model, add /rename --auto — builds on feat(session): add rename, delete, and auto-title generation for session QwenLM/qwen-code#3093.

Why

High user value. Today resuming sessions by listing prompts is awkward; named sessions + auto-titles make the picker much friendlier. Auto-title feature is also a natural fit with our existing fastModel routing (proven out by recap).

Scope / effort

XL. Already attempted as path-of-least-resistance and aborted. Specific blockers:

• 8 modify/delete conflicts on files in packages/vscode-ide-companion/ — our fork deleted that whole package; upstream PR modifies those files. Need to skip all vscode changes during cherry-pick.
• DialogManager.tsx import of MemoryDialog from un-ported feat(memory): managed auto-memory and auto-dream system QwenLM/qwen-code#3087 auto-memory work — strip.
• 4 core source conflicts: config.ts, chatRecordingService.ts, secure-browser-launcher.ts, secure-browser-launcher.test.ts.
• The Tier 2 PR (feat: backport Space-to-preview in /resume session picker (#3605) #182) we merged today already laid groundwork (SessionPicker has enablePreview); session rename adds parallel features (customTitle references, initialSessions prop).

Estimated effort: 1-2 focused days.

Prerequisites

Decide whether to also re-introduce vscode-ide-companion or stay deleted. If staying deleted, the cherry-pick strategy is "manually replay only the core + cli + webui pieces, skip vscode files entirely".

Links

• feat(session): add rename, delete, and auto-title generation for session QwenLM/qwen-code#3093
• feat(session): auto-title sessions via fast model, add /rename --auto QwenLM/qwen-code#3540

[mabry1985]

Closing as already landed on main (verified during the 2026-05 upstream survey): session rename/delete (QwenLM#3093/QwenLM#3540) — renameCommand.ts + deleteCommand.ts on main. Reopen if the implementation needs the upstream variant.