## Context
This commit adds the supporting infrastructure that makes the assign
feature work end-to-end.
## Components Added/Modified
### SmartDag
- Main view component for graph-based task management
- Integrates TaskCardGrid and WorkflowGraph
- Has 'Assign' mode toggle button
- Passes archetypes and assignMode to WorkflowGraph
- Manages filter state (hideClosed, sortReadyFirst, etc.)
### useGraphAnalysis Hook
- Extracted graph analysis logic for reuse
- Returns: actionableNodeIds, cycleNodeIdSet, blockerTooltipMap, etc.
- Used by both SmartDag and AssignmentPanel
- Ensures consistent 'actionable' definition across components
### UnifiedShell
- Added assignMode state
- Added selectedAssignIssue state
- Renders AssignmentPanel when in graph view + assign mode
- Wires up onAssignModeChange and onSelectedIssueChange callbacks
## Design Philosophy
- Shared hook means single source of truth for 'actionable'
- Clean separation between view (SmartDag) and sidebar (AssignmentPanel)
- URL state preserved for navigation
## Test Coverage
- SmartDag tests: 12 tests covering buttons, callbacks, imports
- useGraphAnalysis tests: 6 tests covering cycle detection, blockers
- UnifiedShell tests: 9 tests covering state and rendering
This commit includes the new SwarmWorkspace with its 3 sub-tabs, the LeftPanel mission picker, and the comprehensive Operations Command Dashboard featuring the live interactive DAG telemetry and task assignment prep flow.
- Created ThreadDrawer component (24rem) that slides from right edge of middle
- RightPanel now reserved for Activity Feed + Agent roster (bb-ui2.29)
- Updated URL state: added drawer and agentId params
- Thread shows in drawer when card selected
Architecture now matches PRD:
- Right Panel (17rem): Activity Feed + Agent roster
- Thread Drawer (24rem): Opens from middle when card clicked
Beads: bb-ui2.31 thread drawer created, bb-ui2.13 closed
- Create GraphView component with Flow/Overview tab switcher
- Wire GraphView into UnifiedShell when view=graph
- Connect taskId URL param to selectedId for node selection
- Connect graphTab URL param for tab state persistence
- ReactFlow renders in middle panel with proper layout
Closes bb-ui2.20
