feat(examples): add self-hosted MiniApps with local persistence

[AbhinRustagi]

Users can build interactive dashboard MiniApps inside a self-hosted agent, reopen them from inline previews or the artifact browser, and edit a selected version without losing the previous completed result.

This example extends the OpenUI self-hosted Next.js template with:

• AgentInterface, generative chat, and native streamed artifact previews/detail views.
• The open-source dashboard library and its existing prompt options.
• An OpenAI SDK main-agent tool loop and MiniApp generation with full-response baseResponse edits.
• Live GitHub/npm tools through createToolExecutor, plus explicit frontend clipboard dispatch.
• localStorage for chats, completed versions, artifact browsing, and input/filter state. Cancelled partial calls are discarded.
• CLI catalog registration, portable npm/pnpm lockfiles, configuration instructions, and a manual QA checklist.

Validation with local package builds and the generalized Coda/Muse/sandbox stack: lint, types, and production verification passed. A real creation streamed 207 artifact chunks and one final result; an edit streamed the base, removed the table, renamed the same app as version 2, and reused its unchanged script. Generated script execution and live GitHub/npm reads passed; invalid tool names return HTTP 400. Inline storage checks covered completed calls, latest-version indexing, input state, search, and thread cleanup.

Stacked on #1292, which depends on #1268. Local package links, gateway configuration, keys, identity fixtures, generated specs, bundler aliases, and debug logs are excluded from the commit.

Draft / release gate: the current pinned published starter versions do not include all prerequisite MiniApps APIs. Update package pins and both lockfiles after the dependent packages are released, then verify a fresh CLI installation without links before merging. Local testing currently uses their worktrees.

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Project	Deployment	Actions	Updated
openui-docs	Ready	Preview	Oct 6, 2026 6:54am UTC