Widget diagnostics: per-intent beacons (keychain slots + relay query)

The single-slot beacon couldn't distinguish small vs medium (last writer
wins). Beacon keychain service now embeds the intent type name so small
and medium never overwrite each other; the relay GET now carries the
intent type + entry state as query params so the access log shows exactly
which widget kind ran makeEntry, when, and with what. Diagnostics screen
shows SMALL and MEDIUM beacons side by side — a missing SMALL beacon
after adding the small widget proves its timeline never reaches the
provider (system-level config resolution failure).

FuelBoard/SettingsView.swift

@@ -45,13 +45,15 @@ struct SettingsView: View {
     @State private var debugMode: Bool = FuelStore.loadDebugMode()
     @State private var versionTapCount = 0
     @State private var lastVersionTap = Date.distantPast
-    /// Widget diagnostics: the extension's last makeEntry beacon (keychain)
-    /// + the installed-widget inventory from WidgetCenter.
-    @State private var widgetDiagBeacon: String?
+    /// Widget diagnostics: the extension's last makeEntry beacon PER intent
+    /// type (keychain) + the installed-widget inventory from WidgetCenter.
+    @State private var smallWidgetDiag: String?
+    @State private var mediumWidgetDiag: String?
     @State private var installedWidgets: String = ""
 
     private func refreshWidgetDiag() {
-        widgetDiagBeacon = FuelStore.loadWidgetDiag()
+        smallWidgetDiag = FuelStore.loadWidgetDiag(intentType: "FuelBoardSmallWidgetConfigurationIntent")
+        mediumWidgetDiag = FuelStore.loadWidgetDiag(intentType: "FuelBoardWidgetConfigurationIntent")
         WidgetCenter.shared.getCurrentConfigurations { result in
             let text: String
             switch result {
@@ -139,13 +141,23 @@ struct SettingsView: View {
                         } label: {
                             Label("Refresh widget diagnostics", systemImage: "arrow.clockwise")
                         }
-                        if let widgetDiagBeacon {
-                            Text(widgetDiagBeacon)
+                        if let smallWidgetDiag {
+                            Text("SMALL: \(smallWidgetDiag)")
                                 .font(.caption2)
                                 .foregroundStyle(.secondary)
                                 .textSelection(.enabled)
                         } else {
-                            Text("No widget beacon yet — add a widget on the home screen, then refresh.")
+                            Text("SMALL: no beacon yet")
+                                .font(.caption2)
+                                .foregroundStyle(.secondary)
+                        }
+                        if let mediumWidgetDiag {
+                            Text("MEDIUM: \(mediumWidgetDiag)")
+                                .font(.caption2)
+                                .foregroundStyle(.secondary)
+                                .textSelection(.enabled)
+                        } else {
+                            Text("MEDIUM: no beacon yet")
                                 .font(.caption2)
                                 .foregroundStyle(.secondary)
                         }
@@ -155,7 +167,7 @@ struct SettingsView: View {
                     } header: {
                         Text("Widget Diagnostics")
                     } footer: {
-                        Text("The beacon is written by the widget extension at the end of every timeline entry (keychain, so it survives free-SideStore installs). Installed widgets come from WidgetCenter.")
+                        Text("Each beacon is written by the widget extension at the end of every timeline entry for that intent type (keychain, so it survives free-SideStore installs). A missing SMALL beacon after adding the small widget means its timeline never reaches the provider. Installed widgets come from WidgetCenter.")
                     }
                     .onAppear { refreshWidgetDiag() }
                 }

FuelBoardWidgets/FuelPriceWidget.swift

@@ -133,22 +133,35 @@ struct FuelPriceTimelineProvider<Configuration: WidgetConfigurationIntent & Widg
     }
 
     /// Fire-and-forget diagnostics beacon: writes the entry state to keychain
-    /// (app-readable) and GETs the relay so its access log records that a
-    /// widget timeline actually ran in the extension and what it produced.
-    /// Deliberately outside the timeline result — can never affect rendering.
+    /// (app-readable, one slot per intent type) and GETs the relay so its
+    /// access log records that a widget timeline actually ran in the
+    /// extension and what it produced. Deliberately outside the timeline
+    /// result — can never affect rendering.
     private static func writeDiagBeacon(entry: FuelPriceEntry) {
+        let intentType = String(describing: Configuration.self)
         let first = entry.stations.first
         let json = """
-        {"intent":"\(Configuration.self)","source":"\(entry.locationSource)",\
+        {"intent":"\(intentType)","source":"\(entry.locationSource)",\
         "n":\(entry.stations.count),"fuel":"\(entry.fuel.rawValue)",\
         "sort":"\(entry.sort.rawValue)","fav":\(entry.isFavourites),\
         "station":"\(first?.name ?? "")","price":\(first?.prices[entry.fuel] ?? -1)}
         """
-        FuelStore.saveWidgetDiag(json)
-        guard let url = URLComponents(
+        FuelStore.saveWidgetDiag(json, intentType: intentType)
+        guard var components = URLComponents(
             url: RelayFuelProvider().baseURL.appendingPathComponent("api/v1/widget-diag"),
             resolvingAgainstBaseURL: false
-        )?.url else { return }
+        ) else { return }
+        components.queryItems = [
+            URLQueryItem(name: "intent", value: intentType),
+            URLQueryItem(name: "source", value: entry.locationSource),
+            URLQueryItem(name: "n", value: String(entry.stations.count)),
+            URLQueryItem(name: "fuel", value: entry.fuel.rawValue),
+            URLQueryItem(name: "sort", value: entry.sort.rawValue),
+            URLQueryItem(name: "fav", value: entry.isFavourites ? "1" : "0"),
+            URLQueryItem(name: "station", value: first?.name ?? ""),
+            URLQueryItem(name: "price", value: String(first?.prices[entry.fuel] ?? -1)),
+        ]
+        guard let url = components.url else { return }
         var request = URLRequest(url: url)
         request.timeoutInterval = 2
         Task {

Shared/FuelStore.swift

@@ -697,15 +697,17 @@ struct FuelStore {
         writeKeychain(data: Data(value.utf8), service: service)
     }
 
-    // Widget diagnostics beacon — the widget extension writes its last
-    // makeEntry state here (keychain survives on free SideStore accounts where
-    // the app-group container isn't provisioned); the app's Debug section
-    // reads it to see whether a widget timeline ran and what it produced.
-    static func saveWidgetDiag(_ json: String) {
-        saveString(json, service: "widget.diag")
+    // Widget diagnostics beacons — the widget extension writes its last
+    // makeEntry state PER INTENT TYPE (keychain survives on free SideStore
+    // accounts where the app-group container isn't provisioned); the app's
+    // Debug section reads them to see whether each widget kind's timeline
+    // actually ran and what it produced. Service key embeds the intent type
+    // so small and medium widgets never overwrite each other.
+    static func saveWidgetDiag(_ json: String, intentType: String) {
+        saveString(json, service: "widget.diag.\(intentType)")
     }
 
-    static func loadWidgetDiag() -> String? {
-        loadString(service: "widget.diag")
+    static func loadWidgetDiag(intentType: String) -> String? {
+        loadString(service: "widget.diag.\(intentType)")
     }
 }