Use algolia search instead of JS-powered search index; support AskAI

[nonprofittechy]

Switches to using Algolia search. The AskAI feature is powered by the Lab's OpenAI API key and gpt-5-mini.

It's not amazing, but it is restricted to the actual documents we give it pretty well.

Note: the Algolia search API key shared here is not a secret. It's meant to be exposed in a static website by design. It only gives the ability to search.

[gitguardian]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secret in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
32964610	Triggered	Generic High Entropy Secret	458d5d4	docusaurus.config.js	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secret safely. Learn here the best practices.
3. Revoke and rotate this secret.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

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^{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}

[samglover]

I pulled this and ran it. Looks good and works well, as far as I can tell. LGTM!