Filter pills by backend tags (slug membership), drop keyword matching

Replace the keyword/source-majority Interest system with a StoryPill enum that
matches stories by canonical category slugs. StorySummary gains a tolerant
tags[] (optional, decode-safe); effectiveTags uses tags, falling back to topic
during the backend transition. No more headline keyword-searching on the client —
the backend decides classification; the client asks slug membership.

Pills: All, F1, Sport, AI, Cloud, HomeLab, Tech, Uganda, South Africa, Canada, US.

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

Jarvis/Views/Home/SignalFeedView.swift

@@ -28,7 +28,7 @@ struct SignalFeedView: View {
     @Query private var seenStories: [SeenStory]
     @State private var showFeeds = false
     @State private var showSettings = false
-    @State private var selectedInterest: Interest? = nil
+    @State private var selectedPill: StoryPill = .all
     @State private var shareStory: StorySummary?
     /// Snapshot of already-seen story ids, captured per load so the order stays
     /// stable while scrolling (and refreshes to sink newly-seen ones).
@@ -40,8 +40,8 @@ struct SignalFeedView: View {
     private var readStoryIds: Set<String> { Set(readStories.map(\.id)) }
     private var savedStoryIds: Set<String> { Set(savedStories.map(\.id)) }
 
-    /// Live stories when online; cached fallback when offline. Interest-filtered,
-    /// not yet split by read state.
+    /// Live stories when online; cached fallback when offline. Filtered by the
+    /// selected pill via backend tags — no headline keyword matching.
     private var filteredStories: [StorySummary] {
         let base: [StorySummary]
         if !store.stories.isEmpty {
@@ -51,17 +51,7 @@ 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" || interest.id == "sport" {
-                return base.filter(interest.matches)
-            }
-            return base.filter { interest.matches($0) && !isSport($0) }
-        }
-        // "All" is news-only: no sports.
-        return base.filter { !isSport($0) }
+        return base.filter { $0.matches(selectedPill) }
     }
 
     /// The main feed: unread stories, with already-seen ones sunk below fresh ones.
@@ -130,10 +120,10 @@ struct SignalFeedView: View {
         .onChange(of: store.stories) { _, newValue in
             cacheStories(newValue)
         }
-        .task(id: selectedInterest?.id) {
+        .task(id: selectedPill) {
             // A filter active but nothing matched in the loaded set → pull a few
-            // more pages so sparse interests still populate.
-            guard selectedInterest != nil else { return }
+            // more pages so sparse pills still populate.
+            guard selectedPill != .all else { return }
             var pages = 0
             while filteredStories.isEmpty && store.hasMore && pages < 8 {
                 await store.loadMore()
@@ -191,16 +181,13 @@ struct SignalFeedView: View {
         }
     }
 
-    // MARK: - Pinned interest pills
+    // MARK: - Pills
 
     private var topicPills: some View {
         ScrollView(.horizontal, showsIndicators: false) {
             HStack(spacing: 8) {
-                pill("All", selected: selectedInterest == nil) { selectedInterest = nil }
-                ForEach(Interest.pinned) { interest in
-                    pill(interest.label, selected: selectedInterest?.id == interest.id) {
-                        selectedInterest = (selectedInterest?.id == interest.id) ? nil : interest
-                    }
+                ForEach(StoryPill.allCases) { p in
+                    pill(p.label, selected: selectedPill == p) { selectedPill = p }
                 }
             }
             .padding(.horizontal, 16)
@@ -382,9 +369,9 @@ struct SignalFeedView: View {
                 Text("No cached stories to show")
                     .font(.system(size: 12)).foregroundStyle(Color(hex: "888888"))
                 refreshButton("Retry")
-            } else if let interest = selectedInterest {
+            } else if selectedPill != .all {
                 emptyIcon("line.3.horizontal.decrease.circle")
-                Text("No \(interest.label) stories yet")
+                Text("No \(selectedPill.label) stories yet")
                     .font(.system(size: 15, weight: .heavy)).foregroundStyle(.white)
                 if store.isLoadingMore || store.hasMore {
                     Text("Pulling more to find them…")
@@ -496,6 +483,7 @@ extension StorySummary {
             headline: cached.headline,
             summary: cached.summary,
             topic: cached.topic,
+            tags: nil,
             signalScore: cached.signalScore,
             scoreBreakdown: ScoreBreakdown(sourceAuthority: 0, freshness: 0, localRelevance: 0,
                                            crossSourceConfirmation: 0, topicImportance: 0),

Jarvis/Views/Home/StoryRowView.swift

@@ -117,7 +117,7 @@ struct StoryRowView: View {
             StoryRowView(
                 story: StorySummary(
                     id: "\(score)", headline: "Bank of Uganda cuts interest rates by 50 basis points",
-                    summary: "", topic: "finance", signalScore: score, scoreBreakdown: breakdown,
+                    summary: "", topic: "finance", tags: ["finance"], signalScore: score, scoreBreakdown: breakdown,
                     sourceCount: 7, sources: sources, consensus: nil, conflict: nil,
                     updatedAt: Date().addingTimeInterval(-3600), createdAt: Date()),
                 isCached: score == 64