feat(FN-3711): add inline fast mode toggle and wire shared state in peer ex

This merge introduces several dashboard and engine improvements: agent inbox wake controls (FN-3087, FN-3588) with immediate message triggers; separated plugin lifecycle from setup probe state (FN-3704); assigned-agent triage inheritance in the engine (FN-3703); inline fast mode toggle in the task d

Fusion-Task-Id: FN-3711

docs/task-management.md

@@ -185,6 +185,7 @@ Execution mode can be set during task creation or editing:
 
 - **Via API**: Include `executionMode` field in task create/update payload
 - **Via dashboard**: Select execution mode in the task creation dialog or task detail modal
+- **Task detail quick toggle**: In read mode, use the inline lightning-bolt control in task metadata to switch between **Standard** and **Fast** without entering full edit mode
 - **Values**: `"standard"` (default) or `"fast"`
 
 Example API payload:
@@ -215,6 +216,8 @@ Research document content appears in the existing **Documents** tab in Task Deta
 
 The task detail modal exposes multiple tabs.
 
+In read mode, task metadata includes lightweight inline controls: priority can be changed from the priority chip, and execution mode can be toggled with a one-click lightning-bolt fast-mode button (Fast ↔ Standard) without opening full edit mode.
+
 Task settings edited from the modal now auto-save as you edit (change/blur with debounce for text-like fields). This includes title, description, dependencies, working/base branch (`branch`/`baseBranch`), workflow-step selection, model overrides in the edit form, and source issue metadata. The footer Save button remains available, but normal field edits no longer depend on a manual save click.
 
 The edit footer shows inline autosave state (saving/saved/error), and successful saves propagate the returned task through `onTaskUpdated` so open detail/list state stays fresh.