Dogfood native AG-UI client tools in React

[blove]

Adds a native React preview for AG-UI Client Tools, using the session-owned typed catalog and continuations from #1304. Five browser tools demonstrate simulated weather, a cancellable status check, weather cards, terminal snapshots, and explicit fictional booking decisions. The app keeps native observations separate from local execution and delivery evidence; Stop and New revoke stale execution and decision controls.

Registers the preview in Docs, Code, and Run with actual frontend sources and the canonical Python backend and prompt. Angular remains the default. The frontend fleet becomes 75 examples: 34 React and 41 Angular. Offline tests prepare a frozen canonical Python environment and exercise the actual graph and locked adapter over HTTP/SSE. The docs describe the private source-build packages and the limits of the demo.

An actual Code-view browser failure exposed duplicate prompt paths across source groups. Stable path deduplication fixes the duplicate row and tab, with a regression test. Browser output is excluded by a local ignore rule.

Validation:

• 109 app unit tests; 20 native browser scenarios; four Docs/Code/Run browser flows.
• 102 registry tests, 87 scoped website tests, 394 workspace tests, and strict TypeScript 5.9.3 checks.
• Four project lint targets passed with zero errors; existing warnings remain.
• Matrix, ports, and runtime bridge checks: 52 tests; source/CI policy: 394 tests; parity governance: 736 tests.
• Fresh installed-package build: 164 modules, with 23 native runtime source records matching the merged runtime. Website production build passed.
• Exact canonical result/model/snapshot bindings and worker cleanup verified. Offline scripted-model evidence does not claim a live provider request.

[vercel]

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Project	Deployment	Actions	Updated
threadplane	Ready	Preview	Oct 13, 2026 6:18am UTC