chore(deps): add rrule for richer medication scheduling cadences

The v1.5 medication-scheduling work needs to model monthly /
quarterly / yearly cadences plus arbitrary `INTERVAL` patterns. The
existing string encoding caps the interval at 4 weeks and has no
representation for month-level recurrence at all. RFC 5545 RRULE is
the industry standard for this and the `rrule` package is the
battle-tested TypeScript implementation (used by Google Calendar
sync, EventKit translation layers, FHIR servers).

Pin the latest stable. The library's release cadence has slowed
since 2022; a future migration to `rrule-temporal` is worth tracking
once Node 24 LTS lands, but the existing surface covers HealthLog's
needs without modification.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -79,6 +79,7 @@
     "react-dom": "19.2.5",
     "react-hook-form": "^7.76.1",
     "recharts": "^3.8.1",
+    "rrule": "^2.8.1",
     "sax": "^1.6.0",
     "sonner": "^2.0.7",
     "tailwind-merge": "^3.6.0",

pnpm-lock.yaml

@@ -98,6 +98,9 @@ importers:
       recharts:
         specifier: ^3.8.1
         version: 3.8.1(@types/react@19.2.14)(react-dom@19.2.5(react@19.2.5))(react-is@16.13.1)(react@19.2.5)(redux@5.0.1)
+      rrule:
+        specifier: ^2.8.1
+        version: 2.8.1
       sax:
         specifier: ^1.6.0
         version: 1.6.0
@@ -5642,6 +5645,9 @@ packages:
     resolution: {integrity: sha512-nLTrUKm2UyiL7rlhapu/Zl45FwNgkZGaCpZbIHajDYgwlJCOzLSk+cIPAnsEqV955GjILJnKbdQC1nVPz+gAYQ==}
     engines: {node: '>= 18'}
 
+  rrule@2.8.1:
+    resolution: {integrity: sha512-hM3dHSBMeaJ0Ktp7W38BJZ7O1zOgaFEsn41PDk+yHoEtfLV+PoJt9E9xAlZiWgf/iqEqionN0ebHFZIDAp+iGw==}
+
   run-applescript@7.1.0:
     resolution: {integrity: sha512-DPe5pVFaAsinSaV6QjQ6gdiedWDcRCbUuiQfQa2wmWV7+xC9bGulGI8+TdRmoFkAPaBXk8CrAbnlY2ISniJ47Q==}
     engines: {node: '>=18'}
@@ -12151,6 +12157,10 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  rrule@2.8.1:
+    dependencies:
+      tslib: 2.8.1
+
   run-applescript@7.1.0: {}
 
   run-parallel@1.2.0: