feat: render image in markdown

frontend/src/components/nodes/render/useRenderingNodeState.ts

@@ -24,15 +24,21 @@ import { buildSourceSignatures, type NodeLike, type EdgeLike } from '@/lib/graph
 import { getNodeDisplayStatus, type NodeDisplayStatus } from '@/lib/graph/state'
 import type { ConfigTypeId, SourceRenderingLogicContext } from '@/lib/graph/rendering'
 
+export type OutputMode = 'image' | 'string'
+
 export type RenderingNodeData = {
     viewportWidth?: number
     viewportHeight?: number
     updateMode?: 'auto' | 'manual'
     runTrigger?: number
     lastRunSourceSignature?: string
+    /** Controls which view is shown and what the node emits to downstream (Image = markdown embed, String = resolved text). */
+    outputMode?: OutputMode
     cachedRenderedContent?: string
     cachedResolvedContent?: string
     cachedReasoningContent?: string
+    /** Value exposed to config/agent when they reference this node (e.g. {{ renderId }}). Set on pipeline completion. */
+    cachedOutputValue?: string
 }
 
 const DEFAULT_VIEWPORT_WIDTH = 1200
@@ -96,6 +102,10 @@ export type RenderingNodeState = {
 
     /** Source node type id (e.g. 'config', 'agent') for Output menu from descriptor. */
     sourceNodeType: string | null
+
+    /** Output mode (Image vs String); controls view and emitted cachedOutputValue. */
+    outputMode: OutputMode
+    setOutputMode: (mode: OutputMode) => void
 }
 
 export function useRenderingNodeState(
@@ -140,6 +150,11 @@ export function useRenderingNodeState(
     )
     const effectiveUpdateMode = (data?.updateMode ?? sourceLogic?.defaultUpdateMode ?? 'auto') as 'auto' | 'manual'
     const runTrigger = data?.runTrigger ?? 0
+    const outputMode: OutputMode = (data?.outputMode ?? 'image') as OutputMode
+    const setOutputMode = useCallback(
+        (mode: OutputMode) => updateData({ outputMode: mode }),
+        [updateData]
+    )
     const isAgentSource = srcNode?.type === 'agent'
     const agentOutputMarkdown = isAgentSource
         ? ((srcNode?.data as { outputMarkdown?: string })?.outputMarkdown ?? '')
@@ -201,6 +216,8 @@ export function useRenderingNodeState(
 
     const updateDataRef = useRef(updateData)
     updateDataRef.current = updateData
+    const outputModeRef = useRef(outputMode)
+    outputModeRef.current = outputMode
     const setNodesRef = useRef(setNodes)
     setNodesRef.current = setNodes
     const aiConnectionRef = useRef(aiConnection)
@@ -294,6 +311,7 @@ export function useRenderingNodeState(
                 cachedRenderedContent: undefined,
                 cachedResolvedContent: undefined,
                 cachedReasoningContent: undefined,
+                cachedOutputValue: undefined,
             })
             try {
                 // Pipeline: 1) Resolve (source) → 2) Render (output type) → 3) Cache
@@ -324,10 +342,18 @@ export function useRenderingNodeState(
                 if (thisRunId !== runIdRef.current) return
                 setRenderedContent(htmlOrSvg)
                 setError(null)
+                const mode = outputModeRef.current
+                const cachedOutputValue =
+                    mode === 'string'
+                        ? resolved
+                        : mode === 'image' && htmlOrSvg?.trim() && /<svg[\s>]/i.test(htmlOrSvg.trim())
+                          ? `data:image/svg+xml;charset=utf-8,${encodeURIComponent(htmlOrSvg)}`
+                          : ''
                 updateDataRef.current({
                     cachedRenderedContent: htmlOrSvg,
                     cachedResolvedContent: resolved,
                     cachedReasoningContent: reasoning ?? '',
+                    cachedOutputValue,
                     ...(isManualMode ? { lastRunSourceSignature: signatureForThisRun } : {}),
                 })
             } catch (err: unknown) {
@@ -546,5 +572,7 @@ export function useRenderingNodeState(
         emptyStateAction,
         sourceData,
         sourceNodeType,
+        outputMode,
+        setOutputMode,
     }
 }