Update from code changes: expand Pass user information docs

[mintlify]

Summary

Expand the AI agent Pass user information documentation to cover role-based register, team-based terminology, supported surfaces, the Slack trust boundary, and the deliberate exclusion of user attributes.

Changes

• Clarified that the role passed to the agent can be either the built-in organization role or the name of a custom role.
• Added a "How role shapes the answer" subsection describing the plain-language vs. technical register mapping for system roles, and how custom roles are classified by their scopes.
• Added a "Team-based terminology" subsection explaining that group memberships influence which team's interpretation is preferred on ambiguous questions.
• Added a "Where it applies" subsection listing web, MCP, PAT, and service-account flows.
• Rewrote the Slack note to explain the workspace-installer identity fallback when the AI Agents OAuth requirement is disabled, and called out that this is the same trust boundary used for SQL execution, writeback, and repository discovery.
• Added an Info callout noting that user attributes are intentionally not shared, since they are already enforced as row-level security in query execution.

Context

Follows the backend change that introduces per-agent user-context propagation to the system prompt (lightdash/lightdash#25069).

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated (UTC)
lightdash	🟢 Ready	View Preview	Jul 4, 2026, 12:55 AM

[github-actions]

🤖 Documentation Bot

✅ All checks passed! No issues found.