chore(release): v1.4.26 — privacy policy for App Store submission

Public privacy-policy page at /privacy enumerates every Apple
HealthKit identifier the iOS app reads, names every third-party
sub-processor, and restates the EU MDR + GDPR boundaries. Unblocks
Apple BLOCKER 2 of the iOS App Store Connect submission by giving
the registered Privacy URL a real page to point at.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "healthlog",
-  "version": "1.4.25",
+  "version": "1.4.26",
   "description": "Self-hosted personal-health-tracking PWA with Withings integration, AI insights, and doctor-report PDF export.",
   "license": "AGPL-3.0-only",
   "homepage": "https://healthlog.dev",