Three classes of regression are now pinned:
1. Secondary-LLM tool name doesn't collide with the A2UI middleware's
default intercept list (`render_a2ui`). New
`src/agents/test_a2ui_internal_tools.py` parametrises over
`beautiful_chat._design_a2ui_surface`, `a2ui_dynamic._design_a2ui_surface`,
and `a2ui_fixed.display_flight` and asserts none match the
middleware's `a2uiToolNames` default. Catches accidental rename
reverts that would re-enable the bypass.
2. `generate_a2ui` force-pins the canonical `catalog_id` even when the
secondary LLM hallucinates a wrong one. The new test stubs
`ChatOpenAI` with a fake response carrying a bogus catalogId and
asserts the surface op carries the module's `CUSTOM_CATALOG_ID`.
3. `generate_a2ui` short-circuits with a clean error string when the
LLM emits a root component without a `component` field — never
feeds the renderer the partial tree that surfaced as the "Cannot
create component root without a type" infinite-loop.
7 unit tests, all green locally (`pytest src/agents/test_a2ui_internal_tools.py`).
E2E tests on the same fixes now also assert:
- No `A2UI render error: Catalog not found` banner on the page after
Beautiful Chat → Sales Dashboard, Declarative Gen UI → BarChart, and
A2UI Fixed Schema → Find SFO → JFK round-trips.
- No `Cannot create component … without a type` banner on the same
three pills.
- Exactly ONE flight card on A2UI Fixed Schema (was 6+ on deploy
pre-fix from the `display_flight` loop) — `Flight Details` count
pinned to 1, `Book flight` count pinned to 1.
- At most one ResponsiveContainer on the BarChart pill (loops would
stack multiple).
- At most two ResponsiveContainers on Beautiful Chat → Sales Dashboard
(one pie + one bar = single dashboard render).
Cross-cutting changes that don't belong with any one demo: manifest +
landing-page tags, runtime route adjustments, e2e + QA notes that
follow the demo renames, and a few small cleanups.
Manifest (manifest.yaml + src/app/page.tsx tag labels):
- Naming convention: every demo uses `Thing: Subthing` (Generative UI:
Tool Rendering - Default / Custom Default / Specific; Open Generative
UI: Default / Advanced; Shared State: Streaming / Read + Write;
Reasoning: Default / Custom; Frontend Tools: In-App Actions / Async;
Human in the Loop: In-chat / In-App / Interrupt based; Chat
Customization: CSS / Slots; Headless UI: Simple / Complete).
- Retags: Auth → `platform`; HITL Step Selection + Interrupt-based →
`interactivity`; Reasoning Default + Custom → `chat-ui`; Generative
UI: Tools → `generative-ui`.
- Renames: Readonly State (Agent Context) → Frontend Context Sharing.
- HITL slot points at /demos/hitl-in-chat (working
useHumanInTheLoop+interrupt path) instead of the previous
/demos/hitl that had no backend `interrupt()` calls.
- Highlight paths corrected for the rebuilt headless demos (root-level
paths replaced with hooks/, chat/, tools/, attachments/ subdirs).
- Descriptions rewritten where they had drifted from the implementation
(gen-ui-agent: dropped useCoAgentStateRender claim;
headless-simple: shadcn primitives, not raw Tailwind;
headless-complete: enumerates the actual hooks wired).
Runtime / route:
- src/app/api/copilotkit/route.ts — 30 agents registered (incl. the
reasoning-custom rename from agentic-chat-reasoning).
- copilotkit-mcp-apps/route.ts replaced with [[...slug]]/route.ts so v2
subpath POSTs (/v2/agent/run) resolve.
- src/app/api/copilotkit-voice/[[...slug]]/route.ts — env var standardized
(was `AGENT_URL || LANGGRAPH_DEPLOYMENT_URL`, now matches the rest
of the showcase with just LANGGRAPH_DEPLOYMENT_URL); trailing `/`
removed from deploymentUrl.
Tests / QA:
- e2e specs renamed and paths updated for the demo renames.
- qa notes for a2ui-fixed-schema (booked-state checklist removed) and
byoc-json-render (Wave 4a residue removed).
- docs-links.json key renamed for reasoning-custom.
Cleanup:
- Removed remaining stub agent.py files in demo dirs (real graphs in
src/agents/); removed dead beautiful-chat/components/headless-chat.tsx
(zero importers); removed [A2UI-DEBUG] / [A2UI-RESPONSE] print
statements from beautiful_chat.py; gpt-5.4-mini → gpt-5-mini typo
fix in beautiful_chat.py:249 (would have 4xx'd every model call);
stripped iframe-restriction LLM-prompt copy bleed from
open-gen-ui-advanced suggestion titles.
The convention pass that ran across ~28 demos earlier in this branch is
already reflected in their per-demo commits — every page.tsx reads as
imports + provider + suggestions hook + JSX, with `useConfigureSuggestions`
extracted to a sibling suggestions.ts.
The showcase framework directories better reflect their role as
integration examples rather than distributable packages.
Renames showcase/packages/ -> showcase/integrations/ and updates
the test docker-compose file reference accordingly.
Alem Tuzlak