feat(docs): add configurable logo right-text support

[devin-ai-integration]

Short description of the changes made

Adds support for a configurable rightText field in the logo configuration, allowing users to display text to the right of their logo image (similar to what Cohere currently uses, but now configurable via docs.yml).

Changes:

• Added rightText: string | undefined to LogoConfiguration interface
• Updated both withLogo.ts files to pass through logoRightText from config
• Replaced the hardcoded Cohere domain check in layout.tsx with the config-driven approach
• Added logoRightText to FDR API definition (read, write, db YAML files)
• Added logoRightText to FDR SDK converters (using SDK types directly)

What was the motivation & context behind this PR?

This PR is part of a two-repo change to add a right-text field to the logo schema. The corresponding fern repo PR (fern-api/fern#11075) adds the schema definition, parsing logic, and wires the field into the FDR write request.

Note: The Cohere-specific hack (domain.includes("cohere") ? "Docs" : undefined) has been removed. Cohere will need to add right-text: Docs to their docs.yml configuration to maintain the current behavior.

Updates since last revision

• SDK has been regenerated with logoRightText field
• Removed all ExtendedDocsConfig, ExtendedWriteDocsConfig, and ExtendedDbDocsConfig type extensions
• All code now uses SDK types directly (config.logoRightText, writeShape.config.logoRightText, dbShape.logoRightText)

How has this PR been tested?

• Lint checks passed (pnpm lint:biome, pnpm lint:style)
• TypeScript compilation verified locally

Human review checklist

• Confirm the type cast in layout.tsx is acceptable: (config as { logoRightText?: string }).logoRightText
• Confirm removal of Cohere hack is intentional (they'll need to update their config)
• Verify FDR API definition changes (read, write, db YAML files) are correct

---

Link to Devin run: https://app.devin.ai/sessions/42df904f84f64b34a0696ddc33533983
Requested by: Catherine Deskur ([email protected])

[devin-ai-integration]

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