chore: import upstream snapshot with attribution

apps/sim/tools/thinking/tool.ts

@@ -0,0 +1,43 @@
+import type { ThinkingToolParams, ThinkingToolResponse } from '@/tools/thinking/types'
+import type { ToolConfig } from '@/tools/types'
+
+export const thinkingTool: ToolConfig<ThinkingToolParams, ThinkingToolResponse> = {
+  id: 'thinking_tool',
+  name: 'Thinking Tool',
+  description:
+    'Processes a provided thought/instruction, making it available for subsequent steps.',
+  version: '1.0.0',
+
+  params: {
+    thought: {
+      type: 'string',
+      required: true,
+      visibility: 'llm-only',
+      description:
+        'Your internal reasoning, analysis, or thought process. Use this to think through the problem step by step before responding.',
+    },
+  },
+
+  request: {
+    url: '/api/tools/thinking',
+    method: 'POST',
+    headers: () => ({
+      'Content-Type': 'application/json',
+    }),
+    body: (params: ThinkingToolParams) => ({
+      thought: params.thought,
+    }),
+  },
+
+  transformResponse: async (response: Response): Promise<ThinkingToolResponse> => {
+    const data = await response.json()
+    return data
+  },
+
+  outputs: {
+    acknowledgedThought: {
+      type: 'string',
+      description: 'The thought that was processed and acknowledged',
+    },
+  },
+}