style: redesign map tooltips with rich structured layout (#184)

- New MapTooltip component with kicker label, stat grid, outlined CTA
- Entity-specific tooltips: Territory, Grid Operator, Transmission, EV Charging, Pricing Node, Power Plant
- Territory tooltip shows Customers, ISO/RTO (baCode), State, Segment in 2x2 grid
- Segment labels map full enum values (DISTRIBUTION_COOPERATIVE → 'Distribution Co-op')
- 'View details →' styled as outlined pill button matching Nick's design
- Tile prep script updated to include baCode for territory tiles
- Replaces old plain-text tooltips across all map layers

Co-authored-by: texture-coding-agent <coding-agent@texturehq.com>

Author: texture-fleet-agent[bot]

components/explorer/MapTooltip.tsx

@@ -83,7 +83,7 @@ const styles = {
   },
   statLabel: {
     fontFamily: FONTS.mono,
-    fontSize: 10,
+    fontSize: 9.5,
     fontWeight: 500 as const,
     letterSpacing: "0.08em",
     textTransform: "uppercase" as const,
@@ -101,7 +101,7 @@ const styles = {
     borderRadius: 6,
     marginTop: 12,
     fontFamily: FONTS.sans,
-    fontSize: 13,
+    fontSize: 12.5,
     fontWeight: 500 as const,
     color: COLORS.muted,
     letterSpacing: "-0.01em",