fix(apns): defensive PEM normalisation + ES256 verify (v1.4.47.2)

Coolify runtime logs surfaced
"secretOrPrivateKey must be an asymmetric key when using ES256"
on every push attempt. The channel auto-paused after 3 consecutive
failures.

Root cause: the .p8 PEM stored in the Coolify env-var arrived at
process.env.APNS_KEY without parseable newlines around the BEGIN/END
markers (env_file round-trip artefact). openssl pkey accepts it,
jsonwebtoken@9 used by node-apn is strict.

Normalise the PEM after the 12-factor \n unescape: strip whitespace
between markers, force 64-char line wrap, rebuild canonical PEM.
Idempotent on already-correct inputs. Verify via crypto.createPrivateKey
before handing to node-apn.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "healthlog",
-  "version": "1.4.47.1",
+  "version": "1.4.47.2",
   "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",