* Add Pi extension-launch plumbing for in-process tree primitives
* Add Rewind controls for agent sessions
* Preserve SDK checkpoint env var so Claude file rewind works
The SDK injects CLAUDE_CODE_ENABLE_SDK_FILE_CHECKPOINTING=true when file checkpointing is enabled. The earlier parent-env stripping from c4782ec71c was too broad and removed that child flag along with real parent-session markers.
Keep stripping parent markers, but preserve the checkpoint flag so the SDK rewind path can run directly. With that boundary fixed, the JSONL file-rewind fallback is no longer needed.
* Update OpenCode history replay tests for rewind state
* Show Rewind actions in an adaptive sheet
* Fix rewind semantics across providers
* Refactor Pi IDs through extension capture
* Restore user message to composer after rewind
* Fix Claude rewind tool result mapping
* Fix Claude rewind session switch roundtrip
* Fix rewind and optimistic message regressions
* Tighten rewind test discipline
* Fix OpenCode optimistic message reconciliation
* Reconcile optimistic user messages by marker
* Reorder user message actions
* Unify provider user message contract
* Add Claude rewind flow Playwright contract
* Add Codex rewind flow Playwright contract
* Add OpenCode rewind flow Playwright contract
* Add Pi rewind flow Playwright contract
* Remove real-provider rewind Playwright contracts
* Gate real-provider rewind specs from CI Playwright
- Add download toast component with progress indicator and auto-dismiss
- Add download store for managing file download state
- Add e2e tests for permission prompts (allow/deny flows)
- Add global setup for e2e tests with isolated daemon instance
- Update favicon assets with new design
- Refactor agent-stream-view to use shared tool-call-details component
- Simplify file-explorer-pane component
- Clean up unused screenshots and PRODUCTION.md
🤖 Generated with [Claude Code](https://claude.com/claude-code)
