feat: bold dashboard redesign with inline stats, section labels, and chip icons

Restructure QuickStartPage for a more professional, informative layout:
- Left-aligned hero greeting (text-4xl) with date context and inline stat strip
- GreetingStatStrip shows resolved/active/MTTR at a glance
- Remove collapsible toggle — dashboard stats always visible
- Section labels with trailing border lines for visual hierarchy
- Suggestion chips with category icons, card-style hover, press feedback
- Fix cyan focus ring and icon color to ember orange design system
- Session cards: line-clamp-2 descriptions, font-medium text, problem_domain metadata
- Widen container max-w-3xl → max-w-4xl for breathing room
- Add .impeccable.md and .github/copilot-instructions.md design context
- CLAUDE.md audit: fix stale references, remove duplication, update counts

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/copilot-instructions.md

@@ -0,0 +1,32 @@
+# Copilot Instructions — ResolutionFlow
+
+## Design Context
+
+### Users
+MSP engineers — IT professionals at Managed Service Providers who troubleshoot infrastructure and support issues for multiple client companies. They work under ticket pressure, need to resolve issues fast, and produce clean documentation automatically.
+
+### Brand Personality
+**Three words:** Professional, Modern, SaaS
+**Voice:** Direct, competent, no fluff. Built by MSP engineers, for MSP engineers.
+**Emotional goals:** Confidence, competence, clarity, focus.
+
+### Aesthetic Direction
+- Flat, high-contrast dark theme (Sentry/PostHog-inspired). Premium and clean.
+- **References:** Notion (clarity), Stripe (polish), Figma (functional density)
+- **Anti-references:** Microsoft Teams (clutter), Kaseya VSA 9 (dated patterns)
+- Accent: ember orange (#f97316), max 5% of UI. No glassmorphism, no gradient surfaces, no ambient effects.
+- See `DESIGN-SYSTEM.md` for full token and component specs.
+
+### Accessibility
+- WCAG 2.2 AA baseline
+- Enhanced focus appearance on all interactive elements
+- 7:1 contrast ratio for data visualization colors
+- `prefers-reduced-motion` fully supported
+- Never rely on color alone for status — pair with icons or text
+
+### Design Principles
+1. **Clarity over decoration.** Every pixel should communicate. No ornamental effects.
+2. **Density without clutter.** Use typography hierarchy and spacing to create structure, not chrome.
+3. **Confidence through consistency.** Same patterns, same tokens, same behavior everywhere.
+4. **Speed is a feature.** Minimize clicks. Copilot-first — primary interaction is typing.
+5. **Accessible by default.** WCAG 2.2, enhanced focus, high-contrast data viz, motion sensitivity.