chore(release): v1.12.11 — unify settings notice colours and callout style

Route every Settings callout, badge and status note through the semantic
colour tokens (success / warning / info / primary) instead of raw palette
classes, so the same meaning reads identically across cards and stays
legible in light mode. Add a single SettingsInfoTile primitive — icon +
tone + text on one fixed surface — and adopt it for the threshold-override
caution note, replacing a bespoke box.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "healthlog",
-  "version": "1.12.10",
+  "version": "1.12.11",
   "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",