feat(scheduler): persist recurring daily starts

Add a local-calendar daily start scheduler with pending receipts, per-day deduplication, DST-safe target calculation, missed-day recovery, and retryable account/start failure outcomes.

Persist and validate the daily rule, expose its next target to the renderer, preserve legacy one-time schedules until a daily rule is saved, and gate boot auto-resume on recorded active-run evidence.

Wire boot, settings, account, suspend, resume, interval, and shutdown lifecycle handling with focused RED/GREEN coverage for calendar, persistence, renderer, and controller boundaries.

tests/visual/fixtures.ts

@@ -262,11 +262,17 @@ function createSettings(): AppSettings {
         message: "API-Key aktiv",
         checkedAt: 1786312800000
       }
-    },
-    providerDailyUsageDay: "2026-08-10",
-    scheduledStartEpochMs: 0
-  };
-}
+    },
+    providerDailyUsageDay: "2026-08-10",
+    dailyStartEnabled: false,
+    dailyStartMinuteOfDay: 0,
+    dailyStartFirstLocalDate: "",
+    dailyStartLastHandledLocalDate: "",
+    dailyStartPendingLocalDate: "",
+    dailyStartLastOutcome: "",
+    scheduledStartEpochMs: 0
+  };
+}
 
 function createEmptySnapshot(): UiSnapshot {
   const renderer = createRendererState(createSettings());