refactor(linear): update demo to match Linear UI and @-mention workflow

- Remove 'Consultation mode' value prop (now 6 boxes)
- Update workflow step #2: 'Call @roo Code' with @-mention in comments
- Redesign hero demo to match actual Linear interface:
  - Replace macOS traffic lights with Linear-style breadcrumb navigation
  - Use smaller avatars (20px) with compact inline format
  - Remove 'Agent' badge for cleaner appearance
  - Add 'event' kind for status changes
  - Add 'Leave a comment...' input field
  - Use relative timestamps ('2m ago', 'just now')
  - Update colors to match Linear dark theme (#1F2023)

Author: mp-roocode

apps/web-roo-code/src/app/linear/page.tsx

@@ -9,7 +9,6 @@ import {
 	MessageSquare,
 	Settings,
 	Shield,
-	Users,
 	Zap,
 } from "lucide-react"
 import type { LucideIcon } from "lucide-react"
@@ -96,12 +95,6 @@ const VALUE_PROPS: ValueProp[] = [
 		description:
 			'Need changes? Just comment "@Roo Code also add dark mode support" and the agent picks up where it left off.',
 	},
-	{
-		icon: Users,
-		title: "Consultation mode.",
-		description:
-			"Not every issue needs code. Ask @Roo Code to analyze, explain, or recommend approaches without opening a PR.",
-	},
 	{
 		icon: Link2,
 		title: "Full traceability.",
@@ -136,8 +129,8 @@ const WORKFLOW_STEPS: WorkflowStep[] = [
 	},
 	{
 		step: 2,
-		title: "Assign to Roo Code",
-		description: "Set the assignee to Roo Code. The agent starts working immediately.",
+		title: "Call @Roo Code",
+		description: "Mention @Roo Code in a comment to start. The agent begins working immediately.",
 	},
 	{
 		step: 3,