Add Sport/Canada/US/AI/Cloud/HomeLab pills; drop Finance

- New Sport pill: detect sports by clear headline terms or majority
  sports-outlet sources, and exclude sports (and F1) from All/Tech/regions so
  World Cup/soccer no longer pollutes Finance/Tech.
- New client keyword pills: Canada, US, AI, Cloud, HomeLab (headline-matched).
- Remove the Finance pill; keep Tech (backend topic).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Jarvis/Views/Home/SignalFeedView.swift

@@ -51,13 +51,17 @@ struct SignalFeedView: View {
         } else {
             base = []
         }
+        // Sports (incl. F1) live only under their own pills — the backend mis-tags
+        // them into finance/tech/politics, so exclude them everywhere else.
+        let isSport: (StorySummary) -> Bool = { Interest.isFormula1($0) || Interest.isSports($0) }
         if let interest = selectedInterest {
-            if interest.id == "f1" { return base.filter(interest.matches) }
-            // Other pills (incl. Tech/Finance) exclude F1 (backend mis-tags it).
-            return base.filter { interest.matches($0) && !Interest.f1.matches($0) }
+            if interest.id == "f1" || interest.id == "sport" {
+                return base.filter(interest.matches)
+            }
+            return base.filter { interest.matches($0) && !isSport($0) }
         }
-        // "All" is news-only: F1 lives solely under its own pill.
-        return base.filter { !Interest.f1.matches($0) }
+        // "All" is news-only: no sports.
+        return base.filter { !isSport($0) }
     }
 
     /// The main feed: unread stories, with already-seen ones sunk below fresh ones.