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-# Handoff: Introduce ThreadId — Fix sidebar compilation
-
-## Branch: `introduce-thread-id`
-## Worktree: `/Users/nathan/src/worktrees/zed/pure-stork/zed`
-
-## What's done
-
-All `agent_ui` crate changes are complete and compiling:
-- `thread_metadata_store.rs`: New `ThreadId` type, DB migrations, all store methods updated
-- `thread_import.rs`, `thread_worktree_archive.rs`, `threads_archive_view.rs`: Updated
-- `thread_view.rs`: Added `is_draft()` method
-- `agent_ui.rs`: Re-exports `ThreadId`
-- `agent_panel.rs`: Minimal fixes (`entry_by_session`, `unarchive` lookup)
-
-Verify: `cargo check -p agent_ui` passes.
-
-## What remains
-
-`crates/sidebar/src/sidebar.rs` has ~58 compilation errors because `ThreadMetadata.session_id` changed from `acp::SessionId` to `Option<acp::SessionId>`, and several store methods changed signatures.
-
-Run `cargo check -p sidebar 2>&1` to see all errors.
-
-### Mechanical fix patterns needed:
-
-1. **Comparisons**: `metadata.session_id == *session_id` → `metadata.session_id.as_ref() == Some(session_id)`
-2. **HashSet collection**: Where `session_id` is collected into `HashSet<SessionId>`, use `.filter_map(|m| m.session_id.clone())` to extract from Option
-3. **Field access**: `session_id.0` → `session_id.as_ref().unwrap().0` or `if let Some(sid) = &session_id { sid.0 ... }`
-4. **CancelRestore event**: Pattern `CancelRestore { session_id }` → `CancelRestore { thread_id }`. Import `agent_ui::ThreadId`.
-5. **Store lookups**: `store.entry(&session_id)` → `store.entry_by_session(&session_id)`
-6. **Store mutations** (`delete`, `archive`, `unarchive`, `update_working_directories`): These now take `ThreadId`. Look up via `store.entry_by_session(&session_id).map(|t| t.thread_id)` first, then call with the `ThreadId`.
-7. **`entry_ids()`**: Now returns `Iterator<Item = ThreadId>` not `SessionId`
-8. **`cleanup_thread_archived_worktrees`**: Now takes `ThreadId` not `&acp::SessionId`
-
-### After fixing sidebar:
-
-1. Run tests: `cargo test -p agent_ui -- thread_metadata` and `cargo test -p agent_ui -- thread_import`
-2. Verify: `cargo check -p sidebar`
-
-## Reference
-
-The full target implementation exists on the `project-group-refactor` branch at `/Users/nathan/src/zed` if you need to check anything.