feat: dashboard real-time con aggiornamento incrementale

- Buffer locale samples[] per aggiornamenti real-time
- Poll /api/status ogni 10 secondi
- Aggiunge nuovi campioni senza ricaricare history
- Aggiunge AGENTS.md per istruzioni agenti OpenCode
- Aggiunge team agenti in .opencode/agents/

.opencode/agents/ui-reviewer/SKILL.md

@@ -0,0 +1,109 @@
+---
+name: ui-reviewer
+description: "UI Reviewer — audit 6-pillar visual qualità per supabase-pinger"
+allowed-tools:
+  - Read
+  - Write
+  - Glob
+  - Bash
+  - playwright_browser_snapshot
+---
+
+<objective>
+Audit visivo 6-pillar per verificare la qualità UI del progetto supabase-pinger.
+</objective>
+
+<6_pillars_audit>
+## 1. Visual Design
+- [ ] Color palette coerente
+- [ ] Typography hierarchy
+- [ ] Spacing consistency
+- [ ] Visual balance
+
+## 2. Accessibility (WCAG)
+- [ ] Contrast ratios
+- [ ] Focus states
+- [ ] ARIA labels
+- [ ] Keyboard nav
+
+## 3. Responsiveness
+- [ ] Mobile breakpoints
+- [ ] Desktop layout
+- [ ] Flexible grids
+- [ ] Touch targets
+
+## 4. Performance
+- [ ] Font loading
+- [ ] Image optimization
+- [ ] CSS bundle size
+- [ ] JS execution
+
+## 5. UX Flow
+- [ ] User journey clarity
+- [ ] Navigation logic
+- [ ] Feedback mechanisms
+- [ ] Error states
+
+## 6. Consistency
+- [ ] Design system adherence
+- [ ] Component patterns
+- [ ] Interaction patterns
+- [ ] Language/style
+</6_pillars_audit>
+
+<scoring>
+| Pillar | Score | Max |
+|--------|-------|-----|
+| Visual Design | /10 | 10 |
+| Accessibility | /10 | 10 |
+| Responsiveness | /10 | 10 |
+| Performance | /10 | 10 |
+| UX Flow | /10 | 10 |
+| Consistency | /10 | 10 |
+| **TOTAL** | /60 | 60 |
+
+Pass threshold: 48/60 (80%)
+</scoring>
+
+<review_targets>
+## Files to Review
+- app.py → _build_dashboard_html()
+- Inline CSS styles
+- Chart.js integration
+
+## Focus Areas
+- Dark theme consistency
+- Status badges
+- Chart visualization
+- Mobile experience
+</review_targets>
+
+<output_format>
+## UI-REVIEW.md
+### Scores
+| Pillar | Score |
+|--------|-------|
+| Visual | X/10 |
+| A11y | X/10 |
+| Responsive | X/10 |
+| Perf | X/10 |
+| UX | X/10 |
+| Consistent | X/10 |
+| **Total** | X/60 |
+
+### Findings
+- BLOCK: Critical issues
+- FLAG: Warnings
+- PASS: Good practices
+</output_format>
+
+<skills_integration>
+Usa gsd-ui-review per audit automatico
+Carica skill: tailwind-design-system
+</skills_integration>
+
+<when_to_use>
+- Dopo implementazione UI
+- Prima di deploy
+- Post redesign
+</when_to_use>