Before: `<hc-app-shell>` was a layout-only component with an empty
`<slot>` (the auditor flagged it as "scaffold + no dashboard page");
operators saw the appbar + nav + footer but nothing in `<main>`.
After: three small additions wire the existing components to real
backend data.
frontend/src/pages/Dashboard.ts (~110 LOC) — new Lit `<hc-dashboard>`
- Reads bearer from localStorage / ?token= / <meta name=> / falls
back to "dev-token" (matches the DEV-token mode the backend
reports when HOMECORE_TOKENS is unset)
- Calls client.getConfig() + client.getStates() on mount
- Renders a `.meta` line (location · version · entity count) plus
a responsive grid of `<hc-state-card>` from the live state list
- Polls /api/states every 5 s for live refresh
- Surface a structured error block if the backend is unreachable
so operators see WHAT broke rather than a blank page
frontend/src/main.ts (+9 LOC) — appends `<hc-dashboard>` into the
`<hc-app-shell>` slot on DOMContentLoaded
scripts/homecore-seed.sh (+95 LOC, executable) — POSTs 10
representative entities to the HA-compat `/api/states/<id>`
endpoint so a fresh `homecore-server` boot has demo content.
Live numbers from RuView's sensing-server when RUVIEW_URL is
reachable (sensor.living_room_presence / bedroom_breathing_rate /
bedroom_heart_rate); plausible defaults otherwise.
Empirical (after `bash scripts/homecore-seed.sh` against a fresh
homecore-server on :8123, browser at http://localhost:5173):
.meta: "Home | HOMECORE v0.1.0-alpha.0 | 10 entities"
grid : 10 <hc-state-card> elements rendered, e.g.
binary_sensor.front_door off updated 12:17:34
switch.coffee_maker off updated 12:17:34
sensor.living_room_motion_score 0.0 updated 12:17:33
…
curl : GET /api/config → 200
GET /api/states → 200 (returns array of 10)
The dashboard now provides real value-vs-empty-page proof that the
frontend ↔ HOMECORE-API chain is wired end-to-end.
Co-Authored-By: claude-flow <ruv@ruv.net>