feat: add hourly portfolio sync history

src/modules/investments/operations/domain/operations-sync-plan.ts

@@ -128,7 +128,7 @@ export type OperationCoverage = OperationInterval & {
   asOf: Date;
   fetchedAt: Date;
 };
-const operationsFreshForMs = 300_000;
+const operationsFreshForMs = 3_600_000;
 
 export function planOperationRead(
   requested: OperationInterval[],
@@ -188,8 +188,9 @@ export function planOperationRead(
           .filter((row) => row.from < row.to),
         fresh.map((row) => ({ ...row, instrumentUid: target.instrumentUid })),
       ).length > EMPTY_INTERVAL_COUNT;
+    // The mutable tail is owned by the hourly walk; reads only load what is
+    // missing, never re-verify complete or fresh intervals.
     if (options.force) load.push(target);
-    else if (stale) load.push({ ...target, from: monthStart, to: now });
     else load.push(...missing);
     // Completeness is bounded by the observed end, never by the new wall clock.
     return {