feat: streaming UI — generative UI engine, MCP tooling, playground#184
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feat: streaming UI — generative UI engine, MCP tooling, playground#184geoquant wants to merge 353 commits intocloudflare:mainfrom
geoquant wants to merge 353 commits intocloudflare:mainfrom
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…ponent-docs implementation
…module - generative-map-generator.ts generates component-manifest.ts (pure data) - stateful-wrappers.tsx: Select, Checkbox, Switch, Tabs, Collapsible - generative-wrappers.tsx: Surface, Input, InputArea, CloudflareLogo, Select - component-map.ts assembles COMPONENT_MAP (40 entries) + KNOWN_TYPES - wired into codegen:registry pipeline (atomic with registry/schemas)
…flare/kumo/generative
…component map, and action system docs
…oesn't block custom examples
…Is fill panel width
…romptTextView in panel B
…ration history, and patch op summary
The canonical system prompt from getSystemPrompt() is ~75k chars. The previous 50k limit silently dropped the override in parseChatRequest, causing regenerateWithPrompt to send no system prompt at all — producing invalid HTML/CSS output instead of JSONL.
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startWorkspaceComparison ignored editedSystemPrompt — only regenerateWithPrompt sent skipSystemPrompt + systemPromptOverride. Chat submissions now forward the edited prompt for both panels.
…t false drops LLMs sometimes emit multi-line indented JSON instead of compact JSONL. The verifier's line-by-line parsing counted each fragment as a dropped line, exceeding maxDroppedLines=0 and blocking render. Add reassembleJsonObjects() that buffers lines by tracking brace depth and joins them before parsing. Compact JSONL gets a fast-path (no regression). Leftover unclosed fragments still count as dropped.
LLMs frequently emit pretty-printed JSON. maxDroppedLines=0 caused constant false-positive failures. Dropped lines are informational — the tree still renders whatever ops parsed successfully.
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Summary
@cloudflare/kumo/streaming— JSONL + RFC 6902 patch engine,useUITreehook, action system (handler registry, URL policy, processors)@cloudflare/kumo/generative—UITreeRenderer, element validator with enum coercion, component map codegen,gradeCompositionquality rules,uiTreeToJsxconverter@cloudflare/kumo/loadable— UMD bundle entry point for cross-boundary / iframe embedding@cloudflare/kumo/catalog— system prompt builder with prop scoring/filtering, custom component support, few-shot examplescreate_worker/execute_create_workertools, iframe postMessage bridge/streamingpage with live demo,/playgroundwith auth-gated chat, custom components docs288 files changed, ~54k insertions