UX overhaul: navigation, category grouping, setup guidance, checklist
Fix 1: list_providers returns category, warning, sync_status
Fix 2: Gear icon in header (offset from HelpButton) links to /settings
Fix 3: Integrations page grouped by category (Devices → AI → Nutrition →
Notifications) with section headers, explanatory text, sync status
badges, COROS/coming-soon handling, link to /agent, hash-scroll
Fix 4: Coach page two-path setup (built-in prominent, external agent
subtle link to /agent), anchor to #ai-coaching
Fix 5: Settings 'all 11 providers' → 'All integrations', AI Agent link
Fix 6: AgentConnect back-link to integrations
Fix 7: Dashboard getting-started checklist (dismiss to localStorage)
04e2af1a85