Mobile-Friendly Dashboard

The dashboard now adapts to smaller screens. Capture workspace panels stack vertically, the URL bar goes full-width, and cards across domains, API keys, and schedules reflow for mobile viewports.

Key Changes

• Capture workspace panels stack vertically on mobile with scrollable content
• URL bar uses full width with a compact capture button
• Domain cards, API key cards, and schedule stats stack on smaller screens
• Response stats bar wraps cleanly on narrow viewports
• Overview banner and loading skeletons are responsive