fix: harden automation reconciliation and pause lifecycle

Keep full folder scans recoverable under duplicate protection and classify every discovered file once before automatic admission.

Separate manual previews from automatic capacity limits, serialize renderer intake, normalize automation counters and intervals, and make Main authoritative for runtime timestamps.

Enforce persistent pause across startup, import, close recovery, resume failures, and reconciliation while preserving read-only paused scans and exactly one activation reconciliation.

Restore failed asynchronous rotation chunks, complete automation localization and unlimited queue accessibility, and tighten hidden integration cleanup coverage.

tests/automation-control.test.js

@@ -37,7 +37,7 @@ test('automation settings normalize invalid limits intervals and pause timestamp
     pausedAt: 1700
   }), {
     queueLimitJobs: 42,
-    reconcileIntervalMinutes: 15,
+    reconcileIntervalMinutes: 5,
     paused: false,
     pausedAt: null
   });
@@ -47,6 +47,7 @@ test('automation settings normalize invalid limits intervals and pause timestamp
     paused: false,
     pausedAt: null
   });
+  assert.equal(normalizeAutomationSettings({ reconcileIntervalMinutes: 15 }).reconcileIntervalMinutes, 15);
 });
 
 test('automation settings allow only numeric and trimmed string zero to disable the queue limit', () => {
@@ -238,6 +239,37 @@ test('telemetry deltas increment counters and update event details immutably', (
   assert.equal(telemetry.lastError, 'old');
 });
 
+test('telemetry and deltas normalize every counter to a finite nonnegative integer', () => {
+  const now = new Date(2026, 7, 26, 13, 14, 15).getTime();
+  const telemetry = rollDailyTelemetry({
+    dateKey: '2026-08-26',
+    detected: Number.POSITIVE_INFINITY,
+    queued: Number.NaN,
+    skipped: -4,
+    deferred: 3.9
+  }, now);
+  assert.deepEqual({
+    detected: telemetry.detected,
+    queued: telemetry.queued,
+    skipped: telemetry.skipped,
+    deferred: telemetry.deferred
+  }, { detected: 0, queued: 0, skipped: 0, deferred: 3 });
+
+  const changed = applyTelemetryDelta(telemetry, {
+    detected: Number.POSITIVE_INFINITY,
+    queued: Number.NaN,
+    skipped: -2,
+    deferred: 2.8
+  }, now);
+  assert.deepEqual({
+    detected: changed.detected,
+    queued: changed.queued,
+    skipped: changed.skipped,
+    deferred: changed.deferred
+  }, { detected: 0, queued: 0, skipped: 0, deferred: 5 });
+  assert.equal(Object.values(changed).filter(value => typeof value === 'number').every(value => Number.isFinite(value)), true);
+});
+
 test('pause has higher display priority than disconnect error and queue limit', () => {
   assert.equal(deriveAutomationState({ paused: true, enabled: true, folderPath: 'C:\\watch', reachable: false, error: 'x', queueLimited: true }), 'paused');
 });