WIP feat(Perplexity Node): New node

[Stamsy]

Summary

Added new node Perplexity API
https://docs.perplexity.ai/api-reference/chat-completions

Endpoint: /chat/completions

Resource: Chat

• Operation: Message a Model
• Features:
• Multi-message support (system, user, assistant)
• Model selection (predefined list or custom ID)
• Configurable generation settings (penalties, randomness, max tokens)
• Options for returning images, related questions, and search filtering
• Simplify Output toggle (id, created, citations, message)
• Usable as a regular node or AI tool

Related Linear tickets, Github issues, and Community forum posts

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[codecov]

Codecov Report

Attention: Patch coverage is 38.46154% with 16 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...odes-base/credentials/PerplexityApi.credentials.ts	0.00%	7 Missing ⚠️
...ges/nodes-base/nodes/Perplexity/Perplexity.node.ts	0.00%	6 Missing ⚠️
...ase/nodes/Perplexity/ChatCompletionsDescription.ts	0.00%	3 Missing ⚠️

📢 Thoughts on this report? Let us know!

[Joffcom]

Hey @Stamsy,

Thanks for the PR, We have created "GHC-1007" as the internal reference to get this reviewed.

One of us will be in touch if there are any changes needed, in most cases this is normally within a couple of weeks but it depends on the current workload of the team.