Add a cloud flag to generateSystemPrompt in lang-core - #1117
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OpenUI Cloud now gets its system prompt from lang-core via `{ cloud: true }`, so callers emit the muse config sentinel instead of a locally generated prompt.
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Keep the same issue codes and messages, without a schema layer in between.
Callers don't need validateChatLibrary; Cloud prompt generation already runs it.
No separate ChatLibrary type — generateSystemPrompt accepts the same spec and omits `components` from the config block.
Callers only need the prompt string — the marker and library version are wire details.
Public code should talk about OpenUI Cloud, not backend service names.
Self-hosted prompts already have preamble and additionalRules; extra prose after the config block is Cloud-specific.
Updated README to clarify usage of OpenUI Cloud and deprecated prompt generation method.
Callers bring a library, they do not register a custom one.
abhithesys
approved these changes
Sep 2, 2026
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Summary
generateSystemPrompt({ cloud: true })in lang-core now emits Cloud's config sentinel instead of a locally generated prompt.{ chatLibrary, systemPromptOptions }; docs updated to match.Test plan
cd packages/lang-core && pnpm test(prompt tests)generateSystemPrompt({ cloud: true })starts with]]>openui:configpromptOptionsonly sends preamble / examples / additionalRules