feat(FN-3087): add immediate wake controls for agent inbox and message API,

This merge ships five distinct features: experimental-flag gating for research tools in the CLI extension and core settings, immediate wake controls for the agent inbox and message API enabling on-demand heartbeat triggers, separation of plugin lifecycle from setup probe state in the dashboard, grap

Fusion-Task-Id: FN-3087

plugins/fusion-plugin-dependency-graph/README.md

@@ -15,7 +15,7 @@ Plugin-provided top-level **Graph** dashboard view for Fusion.
 - **Position persistence**: dragged node positions are stored per project in browser localStorage and restored on reload
 - **Animated transitions**: fit/reset operations animate `transform` (`var(--transition-normal)`), while continuous drag/wheel/pinch stays transition-free for responsiveness
 - **Node rendering**: each graph node renders the real dashboard `TaskCard` via `GraphTaskNode` (no duplicated card markup)
-- **Task detail integration**: clicking a graph card opens the native dashboard task detail modal through host context (`openTaskDetail`), matching board/list behavior
+- **Task detail integration**: a primary non-drag click on a graph node surface opens the native dashboard task detail modal exactly once through host context (`openTaskDetail`), matching board/list behavior
 - **In-progress behavior**: steps are visible by default and active-task glow (`agent-active`) is preserved because node cards reuse TaskCard directly
 - **Active-state indicator bar**: active nodes render a compact top bar (`.graph-task-active-indicator`) with the current execution status label (for example `Executing`, `Planning`) and pulsing `--in-progress` emphasis
 - **Current-step highlighting**: active nodes set `data-current-step` for valid native step indices so CSS selectors highlight the currently executing `.card-step-item` and pulse its step dot
@@ -36,10 +36,11 @@ Plugin-provided top-level **Graph** dashboard view for Fusion.
 ## Dependency chain highlighting
 
 - **Hover** a node to highlight the full transitive upstream + downstream chain for that task.
-- **Click** a node to persist selection highlighting until the same node is clicked again or the canvas pane is clicked.
+- **Click** a node to persist selection highlighting until the same node is clicked again or the canvas pane is clicked; this same click also opens task detail once through the host detail callback.
 - **Priority**: hover state overrides selected state; when hover leaves, selected highlighting reappears.
 - **Dimming**: when a chain is active, unrelated nodes and edges are dimmed.
 - **Neutral state**: when nothing is hovered/selected, no highlight/dim classes are applied.
+- **Drag suppression**: drag movements above the node drag threshold suppress the post-drag click, preventing accidental detail opens on pointer release.
 - **Edge rule**: an edge is highlighted only when both its source and target nodes are in the active chain.
 
 ## Controls