feat: add registerable actions to ProcessorTimeline and RouteFlow

Both components now accept `actions` (static) or `getActions` (dynamic
per-item) props. When provided, a "⋮" trigger appears on hover that
opens a Dropdown menu. Click propagation is stopped so action clicks
don't fire the row/node click handler.

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

src/pages/Inventory/sections/CompositesSection.tsx

@@ -769,7 +769,7 @@ export function CompositesSection() {
         <DemoCard
           id="processortimeline"
           title="ProcessorTimeline"
-          description="Horizontal Gantt-style timeline showing processor execution order, duration, and status."
+          description="Horizontal Gantt-style timeline with selectable rows and optional action menus via actions or getActions prop."
         >
           <div style={{ width: '100%' }}>
             <ProcessorTimeline
@@ -780,6 +780,11 @@ export function CompositesSection() {
                 { name: 'RouteToQueue', type: 'router', durationMs: 8, status: 'ok', startMs: 47 },
                 { name: 'AuditLog', type: 'logger', durationMs: 65, status: 'fail', startMs: 55 },
               ]}
+              getActions={(proc) => [
+                { label: 'Change Log Level', onClick: () => {} },
+                { label: 'View Configuration', onClick: () => {} },
+                ...(proc.status === 'fail' ? [{ label: 'View Stack Trace', onClick: () => {} }] : []),
+              ]}
             />
           </div>
         </DemoCard>
@@ -788,7 +793,7 @@ export function CompositesSection() {
         <DemoCard
           id="routeflow"
           title="RouteFlow"
-          description="Vertical processor node diagram showing route execution flow with status coloring and connectors."
+          description="Vertical processor node diagram with status coloring, connectors, and optional action menus."
         >
           <div style={{ width: '100%', maxWidth: 360 }}>
             <RouteFlow
@@ -802,6 +807,10 @@ export function CompositesSection() {
                 { name: 'kafka:order-completed', type: 'to', durationMs: 11, status: 'ok' },
                 { name: 'dead-letter:failed-orders', type: 'error-handler', durationMs: 14, status: 'fail' },
               ]}
+              actions={[
+                { label: 'Change Log Level', onClick: () => {} },
+                { label: 'Enable Tracing', onClick: () => {} },
+              ]}
             />
           </div>
         </DemoCard>