feat(web): ui/ux cleanup

[skulldogged]

Summary

Polishes the web UI across channels, skills, and overview pages, and fixes a few backend/API issues that were causing incorrect behavior in pagination and registry data.

Changes

• Channels

  • Fixed branch/worker cards so collapsed text truncates correctly and expanded text wraps cleanly.
  • Improved branch/worker row alignment.
  • Fixed “load older messages” behavior (debounce + dedupe) and corrected backend timestamp pagination comparison.

• Skills

  • Improved installed/browse card layout and alignment.
  • Updated installed-state action in browse cards (checkmark -> delete on hover/click).
  • Switched delete controls to neutral outline style.
  • Moved “Install from GitHub” section above the infinite list.
  • Added registry description support and surfaced total registry skill count.

• Overview

  • Added/fixed edit links for routing, identity cards, memory, and configuration.
  • Improved activity heatmap/card sizing.
  • Updated memory donut card (title/center total) and fixed tooltip layering/tooltip sizing.

• Shared UI

  • Standardized cortex chat toggle button styling across Channel, Memories, and Cortex pages (neutral style).

• Backend

  • Fixed compile issues in browser tool URL parsing and API auth middleware extractor.
  • Added registry total passthrough and description enrichment fallback in skills API.

Testing

• cargo check
• npm run build

[bilawalriaz]

I already have a PR for "Fixed compile issues in browser tool URL parsing and API auth middleware extractor" here