Follow-up to #30869. Adds Portal mentions on user-facing pages that
naturally call for an LLM + tool credentials but didn't previously
acknowledge Portal as a one-stop option.
- getting-started/installation.md: tip after the 'after install' block
pointing at 'hermes setup --portal' for users who want everything wired
at once instead of piecewise via 'hermes model' + 'hermes tools'.
- user-guide/configuring-models.md: small tip near the top — the page is
literally about provider/model choice and previously had zero Portal
mention.
- user-guide/features/voice-mode.md: Prerequisites need both an LLM and
TTS — a Portal subscription is the single setup that covers both.
- user-guide/features/batch-processing.md: highlights Portal as a
predictable-cost option for parallel agent runs that hit many APIs.
- user-guide/features/api-server.md: backend needs models + tools; one
Portal sub gives a fully-equipped OpenAI-compatible endpoint.
- user-guide/windows-native.md: early-beta users on Windows benefit most
from skipping per-tool Windows-key-juggling.
- integrations/providers.md: updates the existing Tool Gateway tip and
the Nous Portal section to mention the new commands.
- user-guide/features/fallback-providers.md: Nous row in the provider
table now lists 'hermes setup --portal' as the fresh-install path.
Tone discipline: one Portal mention per page, concrete CLI commands
(no marketing copy), always solving a problem the page itself sets up.
- add code-derived reference pages for slash commands, tools, toolsets,
bundled skills, and official optional skills
- document the skin system and link visual theming separately from
conversational personality
- refresh quickstart, configuration, environment variable, and messaging
docs to match current provider, gateway, and browser behavior
- fix stale command, session, and Home Assistant configuration guidance
