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# QA: BYOC json-render — LangGraph (Python)
## Prerequisites
- Demo deployed at `/demos/declarative-json-render`.
- Railway backend healthy (`showcase-langgraph-python-production.up.railway.app`).
- `OPENAI_API_KEY` and `LANGGRAPH_DEPLOYMENT_URL` configured on the Next.js app.
- `@json-render/core` + `@json-render/react` present in `package.json` (pinned to `0.18.0`).
- `byoc_json_render` graph registered in `langgraph.json`.
## Test Steps
### 1. Page load
- [ ] Navigate to `/demos/declarative-json-render`.
- [ ] Chat composer is visible.
- [ ] Three suggestion pills appear with titles: "Sales dashboard", "Revenue by category", "Expense trend".
- [ ] No console errors.
### 2. Sales dashboard suggestion
- [ ] Click the "Sales dashboard" suggestion.
- [ ] Within 60 seconds, a `data-testid="json-render-root"` wrapper appears in the assistant bubble.
- [ ] A `data-testid="metric-card"` renders inside the wrapper.
- [ ] A chart (`data-testid="bar-chart"` or `data-testid="pie-chart"`) renders inside the wrapper.
- [ ] No raw JSON text is shown once rendering finishes — the streaming JSON is replaced by components.
### 3. Revenue by category
- [ ] Click the "Revenue by category" suggestion.
- [ ] Within 60 seconds, a `data-testid="pie-chart"` renders with multiple category slices + legend.
### 4. Expense trend
- [ ] Click the "Expense trend" suggestion.
- [ ] Within 60 seconds, a `data-testid="bar-chart"` renders with month labels.
### 5. Free-form prompt
- [ ] Type "Show me a metric for quarterly revenue" and send.
- [ ] Verify at least one `metric-card` renders; no console errors.
### 6. Multi-turn
- [ ] After a previous render is visible, send a follow-up prompt ("Now break that down by region").
- [ ] A new assistant message appears with a new json-render rendering — prior renders stay in the transcript.
### 7. Malformed output handling
- [ ] If the agent ever replies with non-JSON text (force it by asking "tell me a joke"), the chat falls back to rendering that raw text via the default assistant bubble. No crash, no stuck spinner.
## Expected Results
- Suggestion renders land within 60 seconds. Budget is slightly higher than the hashbrown demo because a JSON `{ root, elements }` spec is more verbose than hashbrown's token stream.
- No uncaught errors in the console.
- Streaming falls back to plain text until the JSON parses, then swaps to rendered components.