Status: ✅ Completed Confidence: 92% Started: January 30, 2026 at 09:33 AM Completed: January 30, 2026 at 09:34 AM
Built relay-timeline app with Timeline view (1,709 messages with filtering) and AnimatedFlow view (particle-based message animation with live feed). DataParser created JSONL parser, Designer built visual components, Developer integrated everything.
Approach: Lead-coordinated role assignment: DataParser, Designer, Developer working in parallel on separate concerns. Integration phase combined all components. Added Live Message Feed after user feedback request.
- Chose: Lead assigns role-based tasks to 3 specialist agents
- Rejected: Single agent does everything, Pair programming approach, More granular task breakdown
- Reasoning: Lead agent coordinated Wave 3 by assigning: DataParser for JSONL message parsing, Designer for UI/UX components (Timeline, MessageCard, AnimatedFlow), Developer for integration and wiring. This role separation ensured parallel work without conflicts.
- Chose: DataParser implements JSONL streaming parser with TypeScript interfaces
- Rejected: JSON array format, SQLite database, Binary format for size
- Reasoning: DataParser chose JSONL format for message storage because: each line is independent (no array wrapping needed), easy to append new messages, supports streaming reads, and is human-readable. Created Message interface with from, to, body, timestamp, and channel fields.
- Chose: Designer creates vertical Timeline component with color-coded sender badges
- Rejected: Horizontal timeline, Chat bubble style, Table/grid layout
- Reasoning: Timeline uses vertical scrolling layout (most natural for message history), with each message as a card showing: timestamp, sender badge (color-coded by agent), recipient, and expandable body. Dark theme matches swarm-viz app. Filter dropdown allows viewing specific agent's messages.
- Chose: Designer builds AnimatedFlow with particle-based message visualization
- Rejected: Static arrows between nodes, Animated arrows, Sankey diagram, Force-directed graph only
- Reasoning: AnimatedFlow shows agents as nodes in a network graph with messages visualized as glowing particles traveling between nodes. Particles have color trails, speed controls, and the animation creates a visceral sense of agent communication. More engaging than static arrows.
- Chose: Designer adds Live Message Feed panel with real-time snippets
- Rejected: Tooltip on hover only, Full message modal, No message content
- Reasoning: User requested actual message content be visible during animation. Designer added a 'Live Message Feed' panel showing the 8 most recent messages with: sender/recipient, color-coded badge, truncated body (100 chars), and fade-in animation. Provides context without overwhelming the visualization.
- Chose: Developer wires routes: / for Timeline view, /animated for AnimatedFlow
- Rejected: Single page with tabs, Query parameter switching, Separate apps
- Reasoning: Developer set up SvelteKit routing with +page.svelte for Timeline (default landing, shows all 1,709 messages chronologically) and /animated/+page.svelte for AnimatedFlow (interactive particle visualization). Both share the same data loader but present it differently.
Agent: Lead
- Lead assigns role-based tasks to 3 specialist agents: Lead assigns role-based tasks to 3 specialist agents
- DataParser implements JSONL streaming parser with TypeScript interfaces: DataParser implements JSONL streaming parser with TypeScript interfaces
- Designer creates vertical Timeline component with color-coded sender badges: Designer creates vertical Timeline component with color-coded sender badges
- Designer builds AnimatedFlow with particle-based message visualization: Designer builds AnimatedFlow with particle-based message visualization
- Designer adds Live Message Feed panel with real-time snippets: Designer adds Live Message Feed panel with real-time snippets
- Developer wires routes: / for Timeline view, /animated for AnimatedFlow: Developer wires routes: / for Timeline view, /animated for AnimatedFlow