US-032: Reduced motion audit, final cleanup, and visual review

- Add prefers-reduced-motion overrides for SubNav button transitions
- Add prefers-reduced-motion overrides for smooth scroll behavior
- Fix connection status dot/text transitions to respect reduced motion
- Create ProjectDetail.tsx renderer and wire into DetailPanel
- Remove placeholder fallback from DetailPanel (all types now covered)
- Delete unused files: useBreakpoint.ts, profile.ts
- Remove unused legacy --pmr-* CSS variables (18 properties)
- Remove unused .pmr-theme CSS utility class

src/data/profile.ts

@@ -1 +0,0 @@
-export const personalStatement = `Healthcare leader combining clinical pharmacy expertise with proficiency in Python, SQL, and data analytics, self-taught over the past decade through a drive to find root causes in data and build the most efficient solutions to complex problems. Currently leading population health analytics for NHS Norfolk & Waveney ICB, serving a population of 1.2 million. Experienced in working with messy, real-world prescribing data at scale to deliver actionable insights—from financial scenario modelling and pharmaceutical rebate negotiation to algorithm design and population-level pathway development. Proven track record of identifying and prioritising efficiency programmes worth £14.6M+ through automated, data-driven analysis. Skilled at translating complex clinical, financial, and analytical requirements into clear recommendations for executive stakeholders.`