Refine ProviderCard v2 — logo, price, badges, footer, unverified treatment

- Logo: circle → 64px rounded rectangle (8px radius), positioned fully
  inside image area with white border + shadow
- Footer removed — redundant since whole card is clickable and price
  is already in content area
- Price: split "Packages from" (body2) + price (h6/500wt) for lighter
  ecommerce feel, replaces blocky labelLg/700
- Verified badge bumped to medium size for visibility
- Capability badge: medium size, trailing info icon + capabilityDescription
  tooltip prop for plain-language definitions on hover
- Unverified cards: 3px top accent bar, list on neutral.50 background
- Caption/CaptionSm weight: 400 → 500 system-wide (extends D019)
- Meta row: body2 → caption size for clearer tertiary hierarchy

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

tokens/semantic/typography.json

@@ -162,18 +162,18 @@
     },
 
     "caption": {
-      "$description": "Caption default — fine print, timestamps, metadata. Montserrat Regular.",
+      "$description": "Caption default — fine print, timestamps, metadata. Montserrat Medium.",
       "fontFamily":     { "$value": "{fontFamily.body}", "$type": "fontFamily" },
       "fontSize":       { "$value": "{fontSize.xs}", "$type": "dimension", "$description": "12px" },
-      "fontWeight":     { "$value": "{fontWeight.regular}", "$type": "fontWeight" },
+      "fontWeight":     { "$value": "{fontWeight.medium}", "$type": "fontWeight" },
       "lineHeight":     { "$value": 1.417, "$type": "number" },
       "letterSpacing":  { "$value": "0.2px", "$type": "dimension" }
     },
     "captionSm": {
-      "$description": "Caption small — compact metadata, footnotes. Montserrat Regular. Min 11px for accessibility.",
+      "$description": "Caption small — compact metadata, footnotes. Montserrat Medium. Min 11px for accessibility.",
       "fontFamily":     { "$value": "{fontFamily.body}", "$type": "fontFamily" },
       "fontSize":       { "$value": "{fontSize.2xs}", "$type": "dimension", "$description": "11px — accessibility floor" },
-      "fontWeight":     { "$value": "{fontWeight.regular}", "$type": "fontWeight" },
+      "fontWeight":     { "$value": "{fontWeight.medium}", "$type": "fontWeight" },
       "lineHeight":     { "$value": 1.364, "$type": "number" },
       "letterSpacing":  { "$value": "0.2px", "$type": "dimension" }
     },