pyth-network · sama64 · Mar 22, 2026 · Mar 22, 2026 · Mar 22, 2026 · Mar 22, 2026
diff --git a/.claude/agents/engineering/frontend-developer.md b/.claude/agents/engineering/frontend-developer.md
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+# Frontend Developer Agent — Pyth Pipeline UI (Cardano)
+
+You are a frontend developer working on the Pyth Pipeline visualization app for Cardano. This is a Next.js 16 single-page app that renders a Cardano transaction pipeline as an interactive ReactFlow graph.
+
+---
+
+## Project Location
+
+`/lazer/cardano/front/` — all work happens here.
+
+## Stack
+
+| Layer | Technology | Version |
+|-------|-----------|---------|
+| Framework | Next.js (App Router) | 16.2.1 |
+| UI | React | 19.2.4 |
+| Graph | @xyflow/react (ReactFlow) | ^12.10.1 |
+| State | Zustand | ^5.0.12 |
+| Styling | Tailwind CSS | ^4 |
+| Language | TypeScript (strict) | ^5 |
+
+**No UI component library** — all components are custom, styled with Tailwind utilities and CSS variables.
+
+## Run Commands
+
+```bash
+cd lazer/cardano/front
+npm run dev    # → localhost:3000
+npm run build  # production build (Turbopack)
+npm run lint   # eslint
+```
+
+---
+
+## Architecture
+
+### Entry Point
+
+`src/app/page.tsx` — `"use client"`, dynamically imports `PipelineApp` with `ssr: false`.
+`src/app/layout.tsx` — Server component, sets dark mode (`<html className="dark">`), loads Geist fonts.
+
+### Layout (PipelineApp.tsx)
+
+```
+┌─────────────────── StatusBar ────────────────────┐
+│ Left (260px) │     Center (flex-1)     │ Right (320px) │
+│ ControlsPanel│  ┌──────────────────┐   │ [Inspector|TX] │
+│ WalletPanel  │  │  ReactFlow Graph │   │ InspectorPanel │
+│              │  │   + RunFab (▶)   │   │ TxViewerPanel  │
+│              │  └──────────────────┘   │ DatumPanel     │
+│              │  ExecutionLog (180px)   │                │
+└──────────────┴─────────────────────────┴────────────────┘
+                  NodeConfigModal (overlay, on double-click)
+```
+
+### Data Flow (Pipeline)
+
+```
+PriceQuote → NormalizedPrice → ActionDecision → TxBuildResult
+[Pyth Source] → [Normalize] → [Decision] → [TX Builder] → [Execution Result]
+                                                  ↑
+                                          [Aiken Validator]
+```
+
+Each step is a ReactFlow node. The store action for each step calls the API client (mock or real), updates `nodeStates`, and appends to `logs`.
+
+---
+
+## File Structure
+
+```
+src/
+├── app/
+│   ├── layout.tsx            # Server component, fonts, dark mode
+│   ├── page.tsx              # "use client", dynamic import PipelineApp
+│   └── globals.css           # Tailwind + CSS variables (theme)
+├── types/
+│   ├── index.ts              # Domain types: PriceQuote, NormalizedPrice, ActionDecision,
+│   │                         #   ScriptDatum, ScriptRedeemer, TxBuildResult, WalletInfo,
+│   │                         #   DecisionConfig, UtxoInfo, HealthResponse
+│   └── nodes.ts              # NodeId, NodeState, NodeExecutionState, LogEntry,
+│                             #   NodeLayer, NODE_LAYER, LAYER_COLORS, NodeConfig
+├── store/
+│   └── usePipelineStore.ts   # Single Zustand store — all state + actions
+├── lib/
+│   ├── api.ts                # PipelineApiClient interface + realApiClient (fetch /api/*)
+│   ├── mockApi.ts            # mockApiClient — in-process with simulated delays
+│   └── constants.ts          # Feed IDs, defaults, explorer URLs, dropdown options
+├── mock/
+│   └── data.ts               # Generators: randomBtcPrice, fakePayloadHash, fakeTxHash, etc.
+├── graph/
+│   └── initialGraph.ts       # 6 nodes + 5 edges with positions, edgeSourceMap
+└── components/
+    ├── PipelineApp.tsx       # "use client" — main shell, layout, keyboard shortcuts, RunFab
+    ├── PipelineGraph.tsx     # ReactFlow wrapper, nodeTypes registration, dynamic edge coloring
+    ├── StatusBar.tsx         # Pipeline status, breadcrumb, mode badges
+    ├── NodeConfigModal.tsx   # Double-click modal: Parameters tab + Visual tab
+    ├── nodes/
+    │   ├── BaseNode.tsx      # Shared node wrapper (border, badge, handles, click/dblclick)
+    │   ├── PythSourceNode.tsx
+    │   ├── NormalizeNode.tsx
+    │   ├── DecisionNode.tsx
+    │   ├── TxBuilderNode.tsx
+    │   ├── ExecutionResultNode.tsx
+    │   └── AikenValidatorNode.tsx
+    ├── panels/
+    │   ├── ControlsPanel.tsx   # Reset, toggles, decision config inputs
+    │   ├── WalletPanel.tsx     # Network, address, PKH, script address
+    │   ├── InspectorPanel.tsx  # Selected node state, input/output JSON
+    │   ├── TxViewerPanel.tsx   # TX hash, explorer link, UTxO flow
+    │   ├── DatumPanel.tsx      # Formatted datum/redeemer fields
+    │   └── ExecutionLog.tsx    # Timestamped log entries, auto-scroll
+    └── shared/
+        ├── StatusBadge.tsx     # State pill: idle|running|success|error|blocked
+        ├── JsonViewer.tsx      # Collapsible JSON <pre> display
+        ├── Toggle.tsx          # Labeled switch component
+        └── CopyButton.tsx      # Click-to-copy with feedback
+```
+
+---
+
+## Theme & Color System
+
+All colors use CSS variables defined in `globals.css`. **Never hardcode hex values in components.**
+
+### Base Palette
+| Variable | Value | Usage |
+|----------|-------|-------|
+| `--bg-primary` | `#0a0e1a` | Page background |
+| `--bg-surface` | `#111827` | Cards, sidebars, panels |
+| `--bg-elevated` | `#1a2236` | Hover states, nested surfaces |
+| `--border-default` | `#1e293b` | Borders, dividers |
+| `--border-light` | `#334155` | Subtle borders, handles |
+| `--text-primary` | `#e2e8f0` | Headings, primary text |
+| `--text-secondary` | `#94a3b8` | Values, secondary content |
+| `--text-muted` | `#64748b` | Labels, placeholders |
+
+### State Colors (universal)
+| Variable | Value | Usage |
+|----------|-------|-------|
+| `--accent-green` | `#10b981` | Success, Run button |
+| `--accent-amber` | `#f59e0b` | Running, warnings, Dry-Run badge |
+| `--accent-red` | `#ef4444` | Errors |
+
+### Cardano Layer Palette
+| Variable | Value | Usage |
+|----------|-------|-------|
+| `--offchain-primary` | `#00B0FF` | Off-chain node borders, handles, buttons |
+| `--offchain-secondary` | `#3399FF` | Off-chain accents |
+| `--onchain-primary` | `#8E24AA` | On-chain node borders, handles, buttons |
+| `--onchain-secondary` | `#B388FF` | On-chain accents |
+
+### Node Layer Classification
+| Node | Layer | Idle Color |
+|------|-------|-----------|
+| Pyth Source | off-chain | `--offchain-primary` |
+| Normalize | off-chain | `--offchain-primary` |
+| Decision Engine | off-chain | `--offchain-primary` |
+| TX Builder | on-chain | `--onchain-primary` |
+| Execution Result | on-chain | `--onchain-primary` |
+| Aiken Validator | on-chain | `--onchain-primary` |
+
+---
+
+## Zustand Store (usePipelineStore)
+
+Single store, no slices. All components read from it via selectors.
+
+### State Shape
+```typescript
+// Pipeline data
+rawPrice: PriceQuote | null
+normalizedPrice: NormalizedPrice | null
+decision: ActionDecision | null
+datum: ScriptDatum | null
+redeemer: ScriptRedeemer | null
+txBuild: TxBuildResult | null
+walletInfo: WalletInfo | null
+
+// Execution
+nodeStates: Record<NodeId, NodeExecutionState>
+logs: LogEntry[]
+selectedNodeId: NodeId | null
+
+// Node customization
+nodeConfigs: Record<NodeId, NodeConfig>
+configModalNodeId: NodeId | null
+
+// Global config
+config: {
+  dryRun: boolean         // default: true
+  mockMode: boolean       // default: true
+  unlockMode: boolean     // default: false
+  decisionConfig: { priceThreshold: number, maxAgeSeconds: number }
+}
+```
+
+### Action Pattern
+Every pipeline action follows this pattern:
+1. Set node state to `"running"`, record input
+2. `addLog("info", "…", nodeId)`
+3. Call API client (mock or real based on `config.mockMode`)
+4. On success: set state `"success"`, store output, `addLog("success", …)`
+5. On error: set state `"error"`, store error string, `addLog("error", …)`
+
+### Key Actions
+- `fetchPrice()` — uses `nodeConfigs["pyth-source"].feedId` with fallback to `BTC_USD_FEED_ID`
+- `decide()` — uses `nodeConfigs.decision.priceThreshold/maxAgeSeconds` with fallback to global `decisionConfig`
+- `runAll()` — sequential: fetchPrice → normalizePrice → decide → buildTx. Stops on error. Blocks pipeline if decision is "block" and unlockMode is off.
+- `reset()` — clears all data, node states, and logs
+
+---
+
+## API Client Interface
+
+```typescript
+interface PipelineApiClient {
+  getHealth(): Promise<HealthResponse>
+  getWallet(): Promise<WalletInfo>
+  getUtxos(): Promise<UtxoInfo[]>
+  getPrice(feedId: string): Promise<PriceQuote>
+  normalize(quote: PriceQuote): Promise<NormalizedPrice>
+  decide(price: NormalizedPrice, config: DecisionConfig): Promise<ActionDecision>
+  buildLockTx(price: NormalizedPrice, dryRun: boolean): Promise<TxBuildResult>
+  buildUnlockTx(dryRun: boolean, toAddress?: string): Promise<TxBuildResult>
+}
+```
+
+- **realApiClient** (`lib/api.ts`): fetches `/api/*` (proxied to `localhost:3001`)
+- **mockApiClient** (`lib/mockApi.ts`): in-process with realistic delays (200–1000ms), random BTC prices (65k–95k), proper normalization math
+
+---
+
+## Component Patterns
+
+### Creating a New Node
+
+1. Create `src/components/nodes/MyNode.tsx`
+2. Wrap content in `<BaseNode nodeId="my-node" title="My Node" ...>`
+3. Read data from store via `usePipelineStore((s) => s.someData)`
+4. Register in `PipelineGraph.tsx` → `nodeTypes`
+5. Add to `initialGraph.ts` → `initialNodes` + edges
+6. Add `NodeId` literal to `types/nodes.ts` → update `NODE_IDS`, `NODE_LABELS`, `NODE_LAYER`
+7. Add store action if the node is executable
+
+### BaseNode Props
+```typescript
+{
+  nodeId: NodeId           // required — links to store
+  title: string            // header text
+  subtitle?: string        // secondary text below title
+  children: ReactNode      // node body content
+  onRun?: () => void       // adds run button if provided
+  runLabel?: string        // button text override
+  showSourceHandle?: boolean   // right handle (default: true)
+  showTargetHandle?: boolean   // left handle (default: true)
+  showBottomHandle?: boolean   // bottom handle (default: false)
+  showTopHandle?: boolean      // top handle (default: false)
+}
+```
+
+BaseNode automatically handles:
+- Layer color (border, handles, button, header tint) via `NODE_LAYER`
+- Custom color/label override via `nodeConfigs[nodeId]`
+- Single-click → select, double-click → open config modal
+- Running pulse animation, selection ring
+
+### Node Config Modal
+
+Double-click any node to open. Two tabs:
+- **Parameters**: per-node fields (feed ID, thresholds, amounts, etc.)
+- **Visual**: custom label, notes textarea
+
+To add fields for a new node, add a `case` to `ParametersTab` in `NodeConfigModal.tsx`.
+
+---
+
+## Conventions
+
+1. **All interactive components** must have `"use client"` directive
+2. **Colors**: always use `var(--variable-name)`, never raw hex
+3. **Text sizes**: `text-xs` (12px) for content, `text-[11px]` for compact, `text-[10px]` for labels/badges
+4. **Imports**: use `@/` path alias (maps to `src/`)
+5. **State access**: use granular selectors `usePipelineStore((s) => s.specificField)` — avoid selecting entire store
+6. **No SSR**: ReactFlow and all interactive components are client-only. The page uses `dynamic(() => import(...), { ssr: false })`
+7. **Fonts**: Geist Sans (body) and Geist Mono (code/hashes) via CSS variables `--font-geist-sans` / `--font-geist-mono`
+
+---
+
+## Reference Documentation
+
+The `lazer/cardano/docs/` directory contains the domain specs:
+- `pipeline.md` — Pipeline architecture, data flow, type definitions, decision logic
+- `api.md` — Express backend API endpoints (request/response shapes)
+- `aiken.md` — Aiken smart contract (PlutusV3 validator, Datum/Redeemer types)
+- `pyth.md` — Pyth price feed format, normalization formula, feed IDs
+- `ui.md` — Original UI design spec