Feature/seq agents (#2798)

* update build functions

* sequential agents

* update langchain to 0.2, added sequential agent nodes

* add marketplace templates

* update howto wordings

* Merge branch 'main' into feature/Seq-Agents

# Conflicts:
#	pnpm-lock.yaml

* update deprecated functions and add new sequential nodes

* add marketplace templates

* update marketplace templates, add structured output to llm node

* add multi agents template

* update llm node with bindmodels

* update cypress version

* update templates sticky note wordings

* update tool node to include human in loop action

* update structured outputs error from models

* update cohere package to resolve google genai pipeThrough bug

* update mistral package version, added message reconstruction before invoke seq agent

* add HITL to agent

* update state messages restructuring

* update load and split methods for s3 directory

packages/components/nodes/sequentialagents/Loop/Loop.ts

@@ -0,0 +1,66 @@
+import { INode, INodeData, INodeParams, ISeqAgentNode } from '../../../src/Interface'
+
+class Loop_SeqAgents implements INode {
+    label: string
+    name: string
+    version: number
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    credential: INodeParams
+    inputs: INodeParams[]
+    hideOutput: boolean
+
+    constructor() {
+        this.label = 'Loop'
+        this.name = 'seqLoop'
+        this.version = 1.0
+        this.type = 'Loop'
+        this.icon = 'loop.svg'
+        this.category = 'Sequential Agents'
+        this.description = 'Loop back to the specific sequential node'
+        this.baseClasses = [this.type]
+        this.inputs = [
+            {
+                label: 'Start | Agent | LLM | Tool Node',
+                name: 'sequentialNode',
+                type: 'Start | Agent | LLMNode | ToolNode',
+                list: true
+            },
+            {
+                label: 'Loop To',
+                name: 'loopToName',
+                description: 'Name of the agent to loop back to',
+                type: 'string',
+                placeholder: 'agent1'
+            }
+        ]
+        this.hideOutput = true
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const sequentialNodes = nodeData.inputs?.sequentialNode as ISeqAgentNode[]
+        const loopToNameLabel = nodeData.inputs?.loopToName as string
+
+        if (!sequentialNodes || !sequentialNodes.length) throw new Error('Loop must have a predecessor!')
+        if (!loopToNameLabel) throw new Error('Loop to name is required')
+
+        const loopToName = loopToNameLabel.toLowerCase().replace(/\s/g, '_').trim()
+
+        const returnOutput: ISeqAgentNode = {
+            id: nodeData.id,
+            node: loopToName,
+            name: loopToName,
+            label: loopToNameLabel,
+            type: 'agent',
+            predecessorAgents: sequentialNodes,
+            output: loopToName
+        }
+
+        return returnOutput
+    }
+}
+
+module.exports = { nodeClass: Loop_SeqAgents }

packages/components/nodes/sequentialagents/Loop/loop.svg

@@ -0,0 +1 @@
+<svg  xmlns="http://www.w3.org/2000/svg"  width="24"  height="24"  viewBox="0 0 24 24"  fill="none"  stroke="currentColor"  stroke-width="2"  stroke-linecap="round"  stroke-linejoin="round"  class="icon icon-tabler icons-tabler-outline icon-tabler-arrow-back-up-double"><path stroke="none" d="M0 0h24v24H0z" fill="none"/><path d="M13 14l-4 -4l4 -4" /><path d="M8 14l-4 -4l4 -4" /><path d="M9 10h7a4 4 0 1 1 0 8h-1" /></svg>