feat(session): Support file operation rollback

[lhpqaq]

Description

Support file operation rollback (e.g. recovering accidentally deleted files). Task 6 in #2291.

Related Issue: Relates to #2590

Security Considerations: [If applicable, e.g. channel auth, env/config handling]

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation
• Refactoring

Component(s) Affected

• Core / Backend (app, agents, config, providers, utils, local_models)
• Console (frontend web UI)
• Channels (DingTalk, Feishu, QQ, Discord, iMessage, etc.)
• Skills
• CLI
• Documentation (website)
• Tests
• CI/CD
• Scripts / Deploy

Checklist

• I ran pre-commit run --all-files locally and it passes
• If pre-commit auto-fixed files, I committed those changes and reran checks
• I ran tests locally (pytest or as relevant) and they pass
• Documentation updated (if needed)
• Ready for review

Testing

Local Verification Evidence

pre-commit run --all-files
# paste summary result

pytest
# paste summary result

Additional Notes

[Optional: any other context]

[github-actions]

Welcome to QwenPaw! 🐾

Hi @lhpqaq, this is your 2nd Pull Request.

🙌 Join Developer Community

Thanks so much for your contribution! We'd love to invite you to join the official QwenPaw developer group! You can find the Discord and DingTalk group links under the "Developer Community" section on our docs page:
https://qwenpaw.agentscope.io/docs/community

We truly appreciate your enthusiasm—and look forward to your future contributions! 😊

We'll review your PR soon.

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[Copilot]

Pull request overview

Adds workspace snapshotting + linear undo/redo so agent-driven file operations can be rolled back, and exposes the feature via new /undo and /redo control commands (with console command hints + i18n).

Changes:

• Introduce SnapshotService to snapshot workspace state, record history, and perform undo/redo.
• Record rollback history around each agent run in AgentRunner.query_handler.
• Add /undo + /redo handlers and surface the commands in the Console UI + translations; add test coverage for snapshot/rollback behavior.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/qwenpaw/app/rollback/service.py	New snapshot/history/undo/redo implementation backed by an internal git-dir.
src/qwenpaw/app/rollback/__init__.py	Exports rollback service types.
src/qwenpaw/app/runner/runner.py	Tracks workspace state before agent run and records history after.
src/qwenpaw/app/runner/control_commands/undo_handler.py	Adds /undo control command.
src/qwenpaw/app/runner/control_commands/redo_handler.py	Adds /redo control command.
src/qwenpaw/app/runner/control_commands/__init__.py	Registers and exports the new control commands.
tests/test_rollback.py	New tests covering snapshot init/track/patch/revert + linear undo/redo semantics.
console/src/pages/Chat/index.tsx	Adds /undo and /redo to command suggestions.
console/src/locales/en.json	Adds i18n strings for undo/redo descriptions.
console/src/locales/zh.json	Adds i18n strings for undo/redo descriptions.
console/src/locales/ja.json	Adds i18n strings for undo/redo descriptions.
console/src/locales/ru.json	Adds i18n strings for undo/redo descriptions.
console/src/components/LanguageSwitcher/index.tsx	Updates the RU icon mapping (currently to a USD icon).

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