[codex] fix runtime settings restart hydration (#392)

* fix runtime settings restart hydration

* fix review followups for settings hydration

* dedupe log cleanup day normalization

src/server/shared/logCleanupRetentionDays.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from 'vitest';
+
+import { normalizeLogCleanupRetentionDays } from './logCleanupRetentionDays.js';
+
+describe('normalizeLogCleanupRetentionDays', () => {
+  it('truncates positive numeric values', () => {
+    expect(normalizeLogCleanupRetentionDays(14.9)).toBe(14);
+  });
+
+  it('falls back to the provided default for invalid values', () => {
+    expect(normalizeLogCleanupRetentionDays('oops', 7)).toBe(7);
+    expect(normalizeLogCleanupRetentionDays(-1, 7)).toBe(7);
+  });
+});

src/server/shared/logCleanupRetentionDays.ts

@@ -0,0 +1,9 @@
+export function normalizeLogCleanupRetentionDays(value: unknown, fallback = 30): number {
+  const parsed = Number(value);
+  if (Number.isFinite(parsed) && parsed >= 1) return Math.trunc(parsed);
+
+  const fallbackParsed = Number(fallback);
+  if (Number.isFinite(fallbackParsed) && fallbackParsed >= 1) return Math.trunc(fallbackParsed);
+
+  return 30;
+}