UI: refresh dashboard design system (#1786)

* UI: refresh dashboard design system

- Typography: swap Inter for Space Grotesk (geometric, techy)
- Colors: punchier accent red, add teal secondary, warmer darks
- Cards: better shadows, hover lift effect, increased padding
- Stats: uppercase labels, larger bold values
- Buttons: hover lift micro-interaction, glow on primary
- Status dots: glow effects and subtle pulse animation
- Callouts: gradient backgrounds for depth
- Navigation: active state accent bar indicator
- Layout: more breathing room, bolder page titles

* UI: remove nav active bar indicator

* UI: hide nav scrollbar, remove nav border

* fix: add changelog entry for dashboard refresh (#1786) (thanks @mousberg)

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Co-authored-by: Peter Steinberger <steipete@gmail.com>

CHANGELOG.md

@@ -14,6 +14,7 @@ Docs: https://docs.clawd.bot
 - TTS: add auto mode enum (off/always/inbound/tagged) with per-session `/tts` override. (#1667) Thanks @sebslight. https://docs.clawd.bot/tts
 - Channels: add LINE plugin (Messaging API) with rich replies, quick replies, and plugin HTTP registry. (#1630) Thanks @plum-dawg.
 - Dev: add prek pre-commit hooks + dependabot config for weekly updates. (#1720) Thanks @dguido.
+- UI: refresh Control UI dashboard design system (typography, colors, spacing). (#1786) Thanks @mousberg.
 - Docs: expand FAQ (migration, scheduling, concurrency, model recommendations, OpenAI subscription auth, Pi sizing, hackable install, docs SSL workaround).
 - Docs: add verbose installer troubleshooting guidance.
 - Docs: add macOS VM guide with local/hosted options + VPS/nodes guidance. (#1693) Thanks @f-trycua.