Mark Henderson
4f84a19e75
Standard chat-app pattern: while the AI is streaming or running
tools, the Send button morphs into a Stop control (filled square
inside a faded spinner). Click it (or press Esc) to abort the turn.
Why: with MAX_TOOL_ROUNDS=18, a confused tool-loop can chew through
60-90s of compute and tokens. The user had no way to interrupt — they
just watched ✓ icons accumulate. Stop fixes that.
How:
Client (chat-panel.tsx):
- abortRef holds the in-flight AbortController; lives in a ref so the
Stop button can reach it without re-rendering on every chunk.
- sendMessage creates a fresh controller and passes signal to fetch.
- cancelMessage calls .abort(); also bound to Escape while sending.
- Button morph: while `sending`, render lucide Square overlaid on a
faded Loader2 spin, switch onClick to cancelMessage, swap aria/title
to "Stop generating (Esc)".
- Catch DOMException AbortError separately from network errors and
append "(stopped by user)" to the partial assistant message.
- Textarea no longer disabled during streaming so users can queue
the next prompt; Enter still won't submit until the turn ends.
Server (app/api/chat/route.ts):
- request.signal is captured before the ReadableStream and an `aborted`
flag is flipped on the addEventListener('abort', ...) callback.
- Loop checkpoints `aborted` (a) at the top of every round, (b) before
the inner tool-call loop, (c) before each individual executeMcpTool
call. Picks the next safe boundary instead of yanking mid-call.
- On abort: emit a "(stopped by user)" text chunk + an "aborted" event,
skip the round-cap recovery summary (don't pay for tokens the user
just canceled), persist the partial assistant message normally.
- Fetch errors that come from the abort propagating into Gemini's HTTP
client are recognized and downgraded from "error" to "aborted".
- safeClose() guards against double controller.close() when the abort
races with normal completion.
Made-with: Cursor
VIBN Frontend
AI-Powered Development Platform - Track, manage, and deploy your AI-coded projects with ease.
🎨 Features
Built with Plane.so design patterns:
- ✅ Resizable Sidebar - Collapsible sidebar with peek-on-hover
- ✅ Dashboard Layout - Clean, modern interface following Plane's style
- ✅ Overview Page - Project stats, recent activity, and getting started guide
- ✅ Sessions - Track AI coding sessions with conversation history
- ✅ Features - Plan and track product features
- ✅ API Map - Auto-generated API endpoint documentation
- ✅ Architecture - Living architecture docs and ADRs (Architectural Decision Records)
- ✅ Analytics - Cost analysis, token usage, and performance metrics
- ✅ Porter Integration - One-click deployment for AI-coded tools
🛠️ Tech Stack
- Framework: Next.js 15 (App Router)
- Language: TypeScript
- Styling: Tailwind CSS
- UI Components: shadcn/ui
- Icons: Lucide React
- Notifications: Sonner
🚀 Getting Started
Quick Start
# 1. Install dependencies
npm install
# 2. Setup environment variables (see SETUP.md for details)
cp .env.template .env.local
# Edit .env.local with your Firebase credentials
# 3. Start development server
npm run dev
📖 For detailed setup instructions, see SETUP.md
Build
npm run build
npm start
📁 Project Structure
vibn-frontend/
├── app/
│ ├── (dashboard)/
│ │ └── [projectId]/
│ │ ├── layout.tsx # Main dashboard layout
│ │ ├── overview/page.tsx # Dashboard home
│ │ ├── sessions/page.tsx # AI coding sessions
│ │ ├── features/page.tsx # Feature planning
│ │ ├── api-map/page.tsx # API documentation
│ │ ├── architecture/ # Architecture docs
│ │ └── analytics/page.tsx # Cost & metrics
│ ├── layout.tsx # Root layout
│ └── page.tsx # Home redirect
├── components/
│ ├── sidebar/
│ │ ├── resizable-sidebar.tsx # Resizable sidebar wrapper
│ │ └── project-sidebar.tsx # Sidebar content
│ └── ui/ # shadcn/ui components
└── lib/
└── utils.ts # Utility functions
🎯 Routes
/[projectId]/overview- Project dashboard/[projectId]/sessions- AI coding sessions/[projectId]/features- Feature planning/[projectId]/api-map- API endpoint map/[projectId]/architecture- Architecture documentation/[projectId]/analytics- Cost and metrics
📊 Components
Resizable Sidebar
Based on Plane's sidebar pattern:
- Drag-to-resize (200px - 400px)
- Collapse/expand button
- Peek-on-hover when collapsed
- Smooth transitions
Dashboard Pages
All pages follow consistent patterns:
- Header with title and actions
- Content area with cards
- Responsive layout
- Empty states with CTAs
🔄 Next Steps
- Connect to Database - Wire up PostgreSQL data
- Build API Routes - Create Next.js API routes for data fetching
- Real-time Updates - Add live session tracking
- Porter Integration - Implement deployment workflows
- Authentication - Add user auth and project management
🎨 Design System
Following Plane.so patterns:
- Clean, minimal interface
- Consistent spacing and typography
- Subtle animations
- Dark mode support (via Tailwind)
- Accessible components (via shadcn/ui)
📝 Notes
- Built for Porter hosting deployment
- Designed for AI vibe-coded project management
- Real data integration coming next
- Backend API in
/vibn-backendfolder
Status: ✅ Frontend scaffolded and running Next: Connect to PostgreSQL database and build API layer