Refresh the documentation set for v3.8.0 with new guides covering
authz, agent protocols, cloud agents, compliance, electron, evals,
guardrails, memory, skills, stealth, tunnels, webhooks, and more.
Add an auto-generated provider reference plus a
`gen:provider-reference` script to keep provider catalog docs aligned
with `src/shared/constants/providers.ts`.
Expand the documentation set with standalone guides for free-tier
providers, proxy configuration, and PWA installation while refreshing
the README badge layout and navigation structure.
Remove the docs ignore allowlist so the full documentation tree can be
tracked directly, and drop the outdated context-relay feature page.
