Add HERMES_DESKTOP_REMOTE_URL and HERMES_DESKTOP_REMOTE_TOKEN env
vars that, when set, short-circuit the local-child spawn in
startHermes() and connect the Electron renderer to an already-
running 'hermes dashboard' server reachable over the network.
Motivating use case: WSL2 users who want to run the Hermes core
(agent loop, tools, filesystem access) inside their WSL
distribution while rendering the Electron GUI on native Windows.
Before this change, the desktop app always spawned a local Python
child on the same host as the renderer, which doesn't cross the
WSL/Windows boundary.
The remote path reuses waitForHermes() as a liveness probe
(/api/status is in the backend's public endpoint allowlist), so
the connection is only returned once the backend is actually
ready. WebSocket URL derivation picks ws:// or wss:// based on
the input scheme. URL validation rejects non-http(s) schemes and
requires both env vars together to avoid a half-configured
connection that would silently fall through to the spawn path.
No behaviour change when the env vars are unset — the default
local-spawn flow is untouched.
Typical usage:
# in WSL2
hermes dashboard --tui --no-open --host 0.0.0.0 --port 9119 --insecure
# on Windows
set HERMES_DESKTOP_REMOTE_URL=http://localhost:9119
set HERMES_DESKTOP_REMOTE_TOKEN=<session token>
set HERMES_DESKTOP_IGNORE_EXISTING=1
(launch Hermes desktop)
Introduce the Electron desktop app with a split app/chat/settings structure and shared nanostore state so UI areas own their state instead of routing it through the root.
