chore: Bump version to 0.3.31

PLUG.md

@@ -1,6 +1,6 @@
 ---
 name: Library/sstent/icalendar
-version: "0.3.30"
+version: "0.3.31"
 tags: meta/library
 files:
   - icalendar.plug.js

conductor/tracks.md

@@ -14,5 +14,5 @@ This file tracks all major tracks for the project. Each track has its own detail
 
 ---
 
-- [x] **Track: Fix issue where recurring meetings are not showing up.**
-  *Link: [./tracks/fix_recurring_visibility_20260219/](./tracks/fix_recurring_visibility_20260219/)*
+- [x] **Track: Fix RRULE object expansion error by correctly mapping object keys to standard iCalendar RRULE properties.**
+  *Link: [./tracks/fix_rrule_object_mapping_20260219/](./tracks/fix_rrule_object_mapping_20260219/)*

conductor/tracks/fix_rrule_object_mapping_20260219/index.md

@@ -0,0 +1,5 @@
+# Track fix_rrule_object_mapping_20260219 Context
+
+- [Specification](./spec.md)
+- [Implementation Plan](./plan.md)
+- [Metadata](./metadata.json)

conductor/tracks/fix_rrule_object_mapping_20260219/metadata.json

@@ -0,0 +1,8 @@
+{
+  "track_id": "fix_rrule_object_mapping_20260219",
+  "type": "bug",
+  "status": "new",
+  "created_at": "2026-02-19T00:00:00Z",
+  "updated_at": "2026-02-19T00:00:00Z",
+  "description": "Fix RRULE object expansion error by correctly mapping object keys to standard iCalendar RRULE properties."
+}

conductor/tracks/fix_rrule_object_mapping_20260219/plan.md

@@ -0,0 +1,19 @@
+# Implementation Plan - Fix RRULE Object Mapping
+
+## Phase 1: Reproduction [checkpoint: 2fbb260]
+- [x] Task: Reproduce `Unknown RRULE property` error 0b67cbb
+    - [x] Modify the test case in `icalendar_test.ts` to use `frequency` instead of `freq` in the mock object.
+    - [x] Run the test and confirm it fails with the expected error.
+- [x] Task: Conductor - User Manual Verification 'Reproduction' (Protocol in workflow.md)
+
+## Phase 2: Fix Implementation [checkpoint: fe28a5c]
+- [x] Task: Implement mapping logic in `icalendar.ts` b8bc6cc
+    - [x] Create a mapping object for verbose keys to iCal keys.
+    - [x] Update `expandRecurrences` to use this mapping.
+    - [x] Run the test to confirm it passes.
+- [x] Task: Conductor - User Manual Verification 'Fix Implementation' (Protocol in workflow.md)
+
+## Phase 3: Verification & Cleanup [checkpoint: 793326a]
+- [x] Task: Full Regression Check 7f9a618
+    - [x] Run all tests in `icalendar_test.ts`.
+- [x] Task: Conductor - User Manual Verification 'Verification & Cleanup' (Protocol in workflow.md)

conductor/tracks/fix_rrule_object_mapping_20260219/spec.md

@@ -0,0 +1,32 @@
+# Specification: Fix RRULE Object Expansion Error
+
+## Overview
+The previous fix for handling object-type `rrule` properties (returned by `ts-ics`) introduced a regression. The conversion logic used uppercase full names (e.g., `FREQUENCY`), but the `rrule` library's `parseString` method expects standard iCalendar shortened keys (e.g., `FREQ`). This results in an `Error: Unknown RRULE property 'FREQUENCY'`.
+
+## Functional Requirements
+- **Correct Key Mapping:** The logic that converts an `rrule` object back to a string must use standard iCalendar RRULE property keys.
+- **Mapping Table:** 
+    - `frequency` -> `FREQ`
+    - `until` -> `UNTIL`
+    - `count` -> `COUNT`
+    - `interval` -> `INTERVAL`
+    - `bysecond` -> `BYSECOND`
+    - `byminute` -> `BYMINUTE`
+    - `byhour` -> `BYHOUR`
+    - `byday` -> `BYDAY`
+    - `bymonthday` -> `BYMONTHDAY`
+    - `byyearday` -> `BYYEARDAY`
+    - `byweekno` -> `BYWEEKNO`
+    - `bymonth` -> `BYMONTH`
+    - `bysetpos` -> `BYSETPOS`
+    - `wkst` -> `WKST`
+- **Case Insensitivity:** The mapping should be case-insensitive for the input object keys.
+
+## Implementation Steps
+1.  **Reproduce:** Update the existing `expandRecurrences - object rrule` test case to use the key `frequency` and verify it fails with the reported error.
+2.  **Fix:** Implement a mapping function in `icalendar.ts` to translate object keys to standard RRULE keys before stringifying.
+3.  **Verify:** Run the test case to confirm it now passes.
+
+## Acceptance Criteria
+- [ ] Test `expandRecurrences - object rrule` passes with an object using `frequency` key.
+- [ ] No "Unknown RRULE property" errors are logged for valid RRULE objects.

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "icalendar-plug",
-  "version": "0.3.30",
+  "version": "0.3.31",
   "nodeModulesDir": "auto",
   "tasks": {
     "sync-version": "deno run -A scripts/sync-version.ts",

icalendar.plug.yaml

@@ -1,5 +1,5 @@
 name: icalendar
-version: 0.3.30
+version: 0.3.31
 author: sstent
 index: icalendar.ts
 # Legacy SilverBullet permission name

icalendar.ts

@@ -3,11 +3,32 @@ import { convertIcsCalendar } from "https://esm.sh/ts-ics@2.4.0";
 import { RRule, RRuleSet } from "rrule";
 import { getUtcOffsetMs, resolveIanaName } from "./timezones.ts";
 
-const VERSION = "0.3.30";
+const VERSION = "0.3.31";
 const CACHE_KEY = "icalendar:lastSync";
 
 console.log(`[iCalendar] Plug script executing at top level (Version ${VERSION})`);
 
+/**
+ * Mapping of verbose RRULE object keys to standard iCalendar shortened keys.
+ */
+const RRULE_KEY_MAP: Record<string, string> = {
+  "frequency": "FREQ",
+  "until": "UNTIL",
+  "count": "COUNT",
+  "interval": "INTERVAL",
+  "bysecond": "BYSECOND",
+  "byminute": "BYMINUTE",
+  "byhour": "BYHOUR",
+  "byday": "BYDAY",
+  "bymonthday": "BYMONTHDAY",
+  "byyearday": "BYYEARDAY",
+  "byweekno": "BYWEEKNO",
+  "bymonth": "BYMONTH",
+  "bysetpos": "BYSETPOS",
+  "wkst": "WKST",
+  "freq": "FREQ", // Just in case
+};
+
 // ============================================================================
 // Utility Functions
 // ============================================================================
@@ -163,7 +184,10 @@ export function expandRecurrences(icsEvent: any, windowDays = 365): any[] {
     } else if (typeof rruleStr === "object" && rruleStr !== null) {
         // Handle object rrule (e.g. from ts-ics) by converting back to string
         cleanRule = Object.entries(rruleStr)
-            .map(([k, v]) => `${k.toUpperCase()}=${v}`)
+            .map(([k, v]) => {
+                const standardKey = RRULE_KEY_MAP[k.toLowerCase()] || k.toUpperCase();
+                return `${standardKey}=${v}`;
+            })
             .join(";");
     } else {
         console.warn(`[iCalendar] Invalid rrule type (${typeof rruleStr}) for event "${icsEvent.summary || "Untitled"}". Treating as non-recurring.`);

icalendar_test.ts

@@ -182,7 +182,7 @@ Deno.test("expandRecurrences - object rrule (Reproduction of missing events)", (
   const icsEvent = {
     summary: "Object RRULE Event",
     start: startStr,
-    rrule: { freq: "WEEKLY", byday: "MO" } // Simulating object rrule
+    rrule: { frequency: "WEEKLY", byday: "MO" } // Simulating object rrule with verbose key
   };
   
   // Spy on console.warn