QA: Shared State (Read + Write) — Spring AI

Prerequisites

• Demo is deployed and accessible
• Agent backend is healthy (check /api/health)
• OPENAI_API_KEY is set on the Spring backend

Architecture under test

• The UI owns a preferences = { name, tone, language, interests } object and writes it into agent state via agent.setState({ preferences, notes }).
• Spring's SharedStateReadWriteController runs a per-request LocalAgent subclass that reads preferences off the AG-UI envelope and injects them into the system prompt every turn.
• The agent has a single tool, set_notes(notes: List<String>), that mutates state.notes and emits a STATE_SNAPSHOT event so the useAgent({ updates: [OnStateChanged] }) hook re-renders the page.

Test Steps

1. Page load

• Navigate to /demos/shared-state-read-write.
• Verify both sidebar cards render: data-testid="preferences-card" and data-testid="notes-card".
• Verify the chat input is visible on the right.
• Confirm the preferences JSON pre block (data-testid="pref-state-json") shows the seeded defaults: { name: "", tone: "casual", language: "English", interests: [] }.

2. Write side (UI -> agent)

• Type "Atai" into data-testid="pref-name".
• Switch tone to "playful" via data-testid="pref-tone".
• Switch language to "Spanish" via data-testid="pref-language".
• Click two interest chips (e.g. "Cooking", "Music").
• Confirm the JSON pre block updates live to reflect every edit.
• Send the message "Greet me." and verify the assistant's reply:
  • addresses the user as "Atai",
  • is in Spanish,
  • has a playful tone (exclamations / light humor OK),
  • and references at least one selected interest if natural.

3. Read side (agent -> UI)

• Send: "Remember that I prefer morning meetings and that I don't eat dairy."
• Verify the agent calls set_notes (visible briefly in the chat stream) and that the Notes card shows two list items shortly after.
• Verify data-testid="notes-list" is present and contains two data-testid="note-item" entries.
• Send another remember-style message: "Also remember I'm vegetarian."
• Verify the notes list grows (the agent should pass the FULL list, not a diff), now showing three items.

4. Bidirectional clear

• Click data-testid="notes-clear-button" in the Notes card.
• Verify the list is cleared and data-testid="notes-empty" appears.
• Send "What did I tell you to remember?" — agent should not hallucinate removed notes (memory persists in chat history but the notes panel is canonical).

5. Error handling

• Send an empty message — UI should handle gracefully.
• Disconnect briefly: verify reconnect does not corrupt state.
• No console errors during normal usage.

Expected Results

• Page loads within 3 seconds.
• Preferences edits show in the JSON pre block instantly (local state).
• Agent replies adapt to preferences within 10 seconds.
• Notes panel reflects set_notes calls within 1 second after the tool result event lands (driven by the STATE_SNAPSHOT emission).
• No UI errors, no orphaned state across renders.