Add model router feature docs

[shatfield4]

Pull Request Type

• ✨ feat
• 🐛 fix
• ♻️ refactor
• 💄 style

Relevant Issues

resolves #244

What is in this change?

• Creating a router (name, description, fallback provider/model, cache cooldown)
• Calculated rules (keyword/property-based matching)
• LLM Classified rules (natural-language match descriptions)
• Rule priority and first-match-wins evaluation
• Selecting a router as the workspace LLM provider
• The in-chat "Routed to" badge showing which model and rule handled a response
• New card on the All Features page

Additional Information

Validations

• Ensured updated documentation pass spell check
• Updated or added relevant links as needed
• Reviewed the changes for clarity and accuracy
• Successfully ran the code locally without encountering errors

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Project	Deployment	Actions	Updated (UTC)
anythingllm-docs	Ready	Preview, Comment	May 20, 2026 11:56pm

[angelplusultra]

LGTM

[timothycarambat]

Small change. Lets mode model router to the "Guides" section as well as include an Overview feature so we can describe the value of the feature plainly to users.

Also lets add a callout on this overview page for availability:

• Available on self-hosted (single and multi-user)
• Available on Desktop - TBD

Will update desktop avail during change log that includes it.