docs: add FlowSpeech AI integration guide

[waeckerlinfederowicz66-sketch]

What does this PR do?

Adds a FlowSpeech integration guide for Appwrite Functions. The guide shows how to:

• call the FlowSpeech text-to-speech API from a Node.js Function
• wrap returned PCM audio in a WAV container
• upload generated audio to Appwrite Storage
• keep the API key in Function environment variables

The example uses placeholder environment variables and does not include credentials.

Test plan

• Review /docs/products/ai/integrations/flowspeech
• Confirm the Markdoc structure follows the existing ElevenLabs and LMNT integration guides
• Confirm the sample uses current Appwrite Node.js SDK object-style calls
• Confirm FlowSpeech response metadata drives WAV encoding

Related PRs and issues

None.

Have you read the contributing guidelines?

Yes.

[appwrite]

Appwrite Website

Project ID: 69d7efb00023389e8d27

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Website (appwrite/website)

Project ID: 684969cb000a2f6c0a02

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Tip

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[greptile-apps]

Greptile Summary

The PR adds a FlowSpeech text-to-speech integration guide and links it from the AI integrations sidebar.

• Documents Function setup, environment variables, and dependencies.
• Demonstrates converting returned PCM data into WAV audio and uploading it to Appwrite Storage.
• Uses the injected Function API endpoint for Appwrite SDK configuration and the returned file URL.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
src/routes/docs/products/ai/+layout.svelte	Adds a matching sidebar entry for the new FlowSpeech documentation route.
src/routes/docs/products/ai/integrations/flowspeech/+page.markdoc	Adds the FlowSpeech integration tutorial and now uses the injected Appwrite Function API endpoint, resolving the previously reported configuration failure.

_{Reviews (2): Last reviewed commit: "docs: use the injected Appwrite Function..." | Re-trigger Greptile}

[adityaoberai]

@waeckerlinfederowicz66-sketch thank you for this PR. We deprecated the src/routes/docs/products/ai section favour of the src/routes/docs/tooling/ai section

For any such integrations, it is better to add a guide under src/routes/integrations instead