Redesign dashboard: single neutral theme, urgency-ordered layout

Replaces the five novelty themes with one professional dark theme built
on a shared token set (surfaces, 6-step type scale, semantic colours,
44px tap target) used across dashboard, login and settings.

Layout now matches the cache tiers in app.py: a "Right now" strip with
live streams, the download queue and array usage sits above the fold,
with library, discovery, requests and watch insights below. Previously
the page opened on rarely-actionable disk stats and buried active
streams under twenty recommendation rows.

Also from the design review:
- Discover lists show 5 with a Show more toggle instead of 10 each
- RT descriptions render inline and clamped, not hover-only tooltips
  that touch devices could never reach
- Adding a title is now two-step (tap to arm, tap to confirm) since it
  queues a real download
- role=alert on errors, aria-live on polled regions, semantic dl/dt/dd
  stats, labelled search inputs
- every text/surface pair verified at >= 5:1 contrast

Drops the dead delete-modal JS, which threw a TypeError on every load,
and the stale root-level template copies that Flask never rendered.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CLAUDE.md

@@ -3,8 +3,9 @@
 Flask dashboard aggregating status from the user's self-hosted media stack
 — Sonarr, Radarr, SABnzbd, Tautulli, Prowlarr, Ombi — plus Unraid array
 stats and a Rotten Tomatoes "what's popular that I don't have yet" feed.
-Branded "Greendale Media Centre." Runs as one Docker container on the
-user's Unraid home server. Server-side project directory is named
+Branded "Media Centre" — a single neutral, professional dark theme (the
+earlier five novelty themes were removed). Runs as one Docker container on
+the user's Unraid home server. Server-side project directory is still named
 `greendale`; the container/repo are named `arr-summary`.
 
 ## Architecture
@@ -33,10 +34,20 @@ user's Unraid home server. Server-side project directory is named
     `BeautifulSoup`, JSON-LD parsing), not via an official API — brittle
     to upstream HTML changes by nature.
 - **`templates/`** — Jinja2 templates (`dashboard.html`, `login.html`,
-  `settings.html`); duplicated at the top level too (`dashboard.html` etc.
-  outside `templates/`) — appears to be a leftover from an earlier project
-  layout or the `export-to-unraid.sh` tooling. Left as-is rather than
-  restructured without confirming with the user first.
+  `settings.html`). Stale duplicates of these once sat at the repo root;
+  they were never rendered (Flask loads from `templates/`) and were deleted
+  during the redesign.
+  - All three share one token set defined on `:root` — surfaces, a 6-step
+    `--fs-*` type scale, semantic colours, and `--tap: 44px` for minimum
+    touch targets. Add new UI with those tokens rather than literal values.
+  - `dashboard.html` is ordered by urgency, deliberately mirroring the cache
+    tiers in `app.py`: a "Right now" strip (live streams, download queue,
+    array usage) sits above the fold, with library, discovery, requests and
+    watch insights below it.
+  - Degraded services render through the `service_error()` macro, which
+    pairs `friendly_error` (human cause) with the raw exception behind a
+    disclosure, passed through `redact_secrets` — SABnzbd and Tautulli put
+    their API key in the request URL, so it appears in raw tracebacks.
 - **`export-to-unraid.sh`** — a pre-existing standalone deploy script
   (build image locally → tarball → rsync + `docker load` over SSH) that
   predates the Forgejo pipeline below. Still present, not removed, but the
@@ -78,5 +89,5 @@ pipeline mechanics. Push to `main` on the `forgejo` remote
 and `LOGIN_PASSWORD` — this project was already doing this correctly
 before the Forgejo migration (compose file uses `${VAR}` substitution from
 `.env`, no hardcoded secrets), unlike `n64-tracker` which needed fixing.
-`settings.json` (timezone, theme, changed login password) also persists
+`settings.json` (timezone, changed login password) also persists
 server-side outside git.