Update TODO.md: mark completed items, consolidate TUI section

- Transition error context: done (error messages include available
  transitions in all clients)
- Board overview endpoint: done (model Resource exists)
- Cross-board @me filter: done for API/CLI, TUI item remains
- Consolidate cross-surface items into TUI section since remaining
  work is all TUI/dashboard UI

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bricef

TODO.md

@@ -10,26 +10,24 @@ Outstanding tasks and known issues. See [docs/plans/active/](docs/plans/active/)
 ## TUI
 
 - [ ] Filter bar: filter tasks by assignee, priority, tags, state — applies to both kanban and list views
+- [ ] "My tasks" mode in TUI: dedicated view or filter for `@me` tasks (API and CLI already support it)
+- [ ] Board overview in TUI board selector: show task counts by state when selecting a board
 - [ ] Dependency tree visualisation in task detail view
 - [ ] Mouse support (using [bubblezone](https://github.com/lrstanley/bubblezone))
 
 See also [TUI improvements plan](docs/plans/active/2026-03-31-tui-improvements.md) for page scrolling, searchable selectors, @me shortcut, and take action.
 
-## Cross-surface
-
-- [ ] "My tasks" view: integrate cross-board `@me` filter into TUI (new tab or filter mode) and dashboard
-- [ ] Board overview in TUI board selector: show task counts by state when selecting a board
-- [ ] Transition error context in CLI/TUI: show available transitions in error messages (API already returns them)
-
 ## Done
 
 - [x] MCP server with auto-derived tools, resources, notifications, whoami, task_ref
 - [x] TUI global event stream with per-board ring buffers
 - [x] Structured error responses with available transitions on failure
+- [x] Transition error context — error messages include available transitions in all clients
 - [x] Batch operations (POST /batch)
 - [x] Webhook dispatch with HMAC-SHA256 signatures
 - [x] @me actor alias for self-assignment
-- [x] Cross-board task search (GET /tasks)
+- [x] Cross-board task search (GET /tasks) with @me filter support
 - [x] Idempotency keys for safe retries
 - [x] List view with sortable columns
 - [x] Workflow graph visualisation
+- [x] Board overview endpoint (board_overview Resource)